Mechanical report circuit board transient study

30
Project First Saved Monday, October 17, 2016 Last Saved Tuesday, October 18, 2016 Product Version 16.0 Release Save Project Before Solution No Save Project After Solution No

Transcript of Mechanical report circuit board transient study

Page 1: Mechanical report circuit board transient study

Project

First Saved Monday, October 17, 2016

Last Saved Tuesday, October 18, 2016

Product Version 16.0 Release

Save Project Before Solution No

Save Project After Solution No

Page 2: Mechanical report circuit board transient study

Contents

Units

Model (A4, B4) o Geometry

Parts o Coordinate Systems o Connections

Contacts Contact Regions

o Mesh Mesh Controls

o Steady-State Thermal (A5) Initial Temperature Analysis Settings Loads Solution (A6)

Solution Information Temperature

o Transient Thermal (B5) Initial Temperature Analysis Settings Loads Solution (B6)

Solution Information Result Charts

Temperature Probes

o Chart

Material Data o Structural Steel

Units

TABLE 1

Unit System Metric (mm, kg, N, s, mV, mA) Degrees RPM Celsius

Angle Degrees

Rotational Velocity RPM

Temperature Celsius

Model (A4, B4)

Geometry

TABLE 2 Model (A4, B4) > Geometry

Object Name Geometry

State Fully Defined

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Definition

Source D:\New folder\BoardWithChips.x_t

Type Parasolid

Length Unit Meters

Element Control Program Controlled

Display Style Body Color

Bounding Box

Length X 127. mm

Length Y 139.7 mm

Length Z 21.575 mm

Properties

Volume 36854 mm³

Mass 0.2893 kg

Scale Factor Value 1.

Statistics

Bodies 16

Active Bodies 16

Nodes 114255

Elements 23251

Mesh Metric Orthogonal Quality

Min 9.32230377916565E-04

Max 0.999998623590636

Average 0.83688009610672

Standard Deviation 0.271302410894332

Basic Geometry Options

Solid Bodies Yes

Surface Bodies Yes

Line Bodies No

Parameters Yes

Parameter Key DS

Attributes No

Named Selections No

Material Properties No

Advanced Geometry Options

Use Associativity Yes

Coordinate Systems No

Reader Mode Saves Updated File No

Use Instances Yes

Smart CAD Update No

Compare Parts On Update No

Attach File Via Temp File Yes

Temporary Directory C:\Users\Vishnu Rajarangan\AppData\Local\Temp

Analysis Type 3-D

Mixed Import Resolution None

Decompose Disjoint Geometry Yes

Enclosure and Symmetry Processing Yes

TABLE 3 Model (A4, B4) > Geometry > Parts

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Object Name Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Part 10 Part 11

State Meshed

Graphics Properties

Visible Yes

Transparency 1

Definition

Suppressed No

Stiffness Behavior

Flexible

Coordinate System

Default Coordinate System

Reference Temperature

By Environment

Material

Assignment Structural Steel

Nonlinear Effects

Yes

Thermal Strain Effects

Yes

Bounding Box

Length X 15. mm 127. mm 12.8 mm 10.3 mm 17.9 mm 10.3 mm 15. mm

Length Y 10. mm 139.7 mm 10.3 mm 17.9 mm 10.3 mm 17.9 mm 10. mm

Length Z 4.5 mm 1.575 mm 2.5 mm 4.5 mm

Properties

Volume 675. mm³ 27872 mm³ 329.6 mm³ 460.92 mm³ 460.93 mm³ 675. mm³

Mass 5.2987e-003 kg 0.21879 kg 2.5874e-003 kg 3.6183e-003 kg 5.2987e-003 kg 5.2988e-003 kg 5.2987e-003 kg

Centroid X 6.5 mm 4.7171e-004 mm -37.3 mm -18.85 mm 4.25 mm -41.85 mm 23.5 mm 6.5 mm 23.5 mm 6.5 mm 23.5 mm

Centroid Y 55.2 mm 69.35 mm 30.45 mm 77.25 mm 121.45 mm 58.25 mm 55.2 mm 72.2 mm 92.2 mm

Centroid Z 3.75 mm 0.7125 mm 2.75 mm 3.75 mm

Moment of Inertia Ip1

5.3098e-002 kg·mm² 354.32 kg·mm² 2.4222e-002 kg·mm² 9.8495e-002 kg·mm² 3.3873e-002 kg·mm² 9.8495e-002

kg·mm² 5.3098e-002 kg·mm²

Moment of Inertia Ip2

0.10829 kg·mm² 292.82 kg·mm² 3.6674e-002 kg·mm² 3.3873e-002 kg·mm² 9.8495e-002 kg·mm² 3.3873e-002

kg·mm² 0.10829 kg·mm²

Moment of Inertia Ip3

0.14351 kg·mm² 647.05 kg·mm² 5.82e-002 kg·mm² 0.1286 kg·mm² 0.14351 kg·mm²

Statistics

Nodes 5196 35561 3004 3959 3970 5196

Elements 1020 7105 540 720 734 1020

Mesh Metric Orthogonal Quality

Min 0.988107731429915 9.32230377916565E-

04 0.970849130831674 0.989850694445952 0.980613867710411 0.1864712636707 0.988107731429916 0.988299455525975 0.988299455525973 0.988299455525977

Max 0.999995072773296 0.999990135780915 0.999993227485886 0.99998788929953 0.999988628618795 0.999991971545753 0.999995072773296 0.999994753327455

Average 0.998679544563281 0.657266215058436 0.99623685625646 0.998586407535275 0.997578138993418 0.97690871065715 0.998679544563281 0.998677924087007 0.998677924087008

Standard Deviation

1.82042831242596E-03

0.298540357985176 5.33182870578694E-

03 1.66628511351458E-

03 3.43467418812292E-

03 0.108157206063575

1.82042831254901E-03

1.84447852266113E-03

1.84447852247895E-03

1.84447852235751E-03

1.84447852244859E-03

TABLE 4 Model (A4, B4) > Geometry > Parts

Object Name Part 12 Part 13 Part 14 Part 15 Part 16

State Meshed

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Graphics Properties

Visible Yes

Transparency 1

Definition

Suppressed No

Stiffness Behavior

Flexible

Coordinate System

Default Coordinate System

Reference Temperature

By Environment

Material

Assignment Structural Steel

Nonlinear Effects

Yes

Thermal Strain Effects

Yes

Bounding Box

Length X 10. mm 18. mm 17.9 mm 8.8 mm 1.65 mm

Length Y 15. mm 24. mm 10.3 mm 8.8 mm 21.33 mm

Length Z 4.5 mm 2.7 mm 2.5 mm 13.5 mm 20. mm

Properties

Volume 675. mm³ 1166.4 mm³ 460.93 mm³ 821.09 mm³ 96.478 mm³

Mass 5.2988e-003 kg 9.1562e-003 kg 3.6183e-003 kg 6.4455e-003 kg 7.5735e-004 kg

Centroid X 47. mm -39.5 mm 9.25 mm 22.9 mm 33.325 mm

Centroid Y 126.7 mm 108.2 mm 34.45 mm 106.2 mm 102.33 mm

Centroid Z 3.75 mm 2.85 mm 2.75 mm 8.25 mm 14.494 mm

Moment of Inertia Ip1

0.10829 kg·mm² 0.44506 kg·mm² 3.3873e-002 kg·mm² 0.12727 kg·mm² 9.2129e-002 kg·mm²

Moment of Inertia Ip2

5.3098e-002 kg·mm² 0.25278 kg·mm² 9.8495e-002 kg·mm² 0.12727 kg·mm² 3.2178e-002 kg·mm²

Moment of Inertia Ip3

0.14351 kg·mm² 0.68672 kg·mm² 0.1286 kg·mm² 6.0982e-002 kg·mm² 6.0294e-002 kg·mm²

Statistics

Nodes 5196 8624 3959 12560 2287

Elements 1020 1620 720 3472 480

Mesh Metric Orthogonal Quality

Min 0.988151844449603 0.988072004284191 0.980607888219589 6.21157787634363E-

03 1.52056955427256E-

02

Max 0.999995236581654 0.999998623590636 0.999988060966497 0.999172767557244 0.999882651800136

Average 0.998693191422299 0.998767974088609 0.997560997774408 0.678515338021361 0.569859876290721

Standard Deviation

1.80627075105051E-03

1.95060367273235E-03

3.42775346502052E-03

0.321642507691442 0.311330484608183

Coordinate Systems

TABLE 5 Model (A4, B4) > Coordinate Systems > Coordinate System

Object Name Global Coordinate System

State Fully Defined

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Definition

Type Cartesian

Coordinate System ID 0.

Origin

Origin X 0. mm

Origin Y 0. mm

Origin Z 0. mm

Directional Vectors

X Axis Data [ 1. 0. 0. ]

Y Axis Data [ 0. 1. 0. ]

Z Axis Data [ 0. 0. 1. ]

Connections

TABLE 6 Model (A4, B4) > Connections

Object Name Connections

State Fully Defined

Auto Detection

Generate Automatic Connection On Refresh Yes

Transparency

Enabled Yes

TABLE 7 Model (A4, B4) > Connections > Contacts

Object Name Contacts

State Fully Defined

Definition

Connection Type Contact

Scope

Scoping Method Geometry Selection

Geometry All Bodies

Auto Detection

Tolerance Type Slider

Tolerance Slider 0.

Tolerance Value 0.47507 mm

Use Range No

Face/Face Yes

Face/Edge No

Edge/Edge No

Priority Include All

Group By Bodies

Search Across Bodies

Statistics

Connections 15

Active Connections 15

TABLE 8 Model (A4, B4) > Connections > Contacts > Contact Regions

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Object Name Contact Region

Contact Region

2

Contact Region

3

Contact Region

4

Contact Region

5

Contact Region

6

Contact Region

7

Contact Region

8

Contact Region

9

Contact Region

10

Contact Region

11

State Fully Defined

Scope

Scoping Method

Geometry Selection

Contact 1 Face

Target 1 Face

Contact Bodies

Part 1 Part 2

Target Bodies

Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Part 10 Part 11 Part 12

Definition

Type Bonded

Scope Mode Automatic

Behavior Program Controlled

Trim Contact Program Controlled

Trim Tolerance

0.47507 mm

Suppressed No

Advanced

Formulation Program Controlled

Detection Method

Program Controlled

Elastic Slip Tolerance

Program Controlled

Thermal Conductance

Program Controlled

Pinball Region

Program Controlled

Geometric Modification

Contact Geometry Correction

None

Target Geometry Correction

None

TABLE 9 Model (A4, B4) > Connections > Contacts > Contact Regions

Object Name Contact Region

12 Contact Region

13 Contact Region

14 Contact Region

15

State Fully Defined

Scope

Scoping Method Geometry Selection

Contact 1 Face

Target 1 Face 2 Faces

Contact Bodies Part 2

Target Bodies Part 13 Part 14 Part 15 Part 16

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Definition

Type Bonded

Scope Mode Automatic

Behavior Program Controlled

Trim Contact Program Controlled

Trim Tolerance 0.47507 mm

Suppressed No

Advanced

Formulation Program Controlled

Detection Method Program Controlled

Elastic Slip Tolerance Program Controlled

Thermal Conductance Program Controlled

Pinball Region Program Controlled

Geometric Modification

Contact Geometry Correction

None

Target Geometry Correction None

Mesh

TABLE 10 Model (A4, B4) > Mesh

Object Name Mesh

State Solved

Display

Display Style Body Color

Defaults

Physics Preference Mechanical

Relevance 0

Sizing

Use Advanced Size Function Off

Relevance Center Coarse

Element Size Default

Initial Size Seed Active Assembly

Smoothing Medium

Transition Fast

Span Angle Center Coarse

Minimum Edge Length 0.78540 mm

Inflation

Use Automatic Inflation None

Inflation Option Smooth Transition

Transition Ratio 0.272

Maximum Layers 5

Growth Rate 1.2

Inflation Algorithm Pre

View Advanced Options No

Patch Conforming Options

Triangle Surface Mesher Program Controlled

Page 9: Mechanical report circuit board transient study

Patch Independent Options

Topology Checking No

Advanced

Number of CPUs for Parallel Part Meshing Program Controlled

Shape Checking Standard Mechanical

Element Midside Nodes Program Controlled

Straight Sided Elements No

Number of Retries Default (4)

Extra Retries For Assembly Yes

Rigid Body Behavior Dimensionally Reduced

Mesh Morphing Disabled

Defeaturing

Pinch Tolerance Please Define

Generate Pinch on Refresh No

Automatic Mesh Based Defeaturing On

Defeaturing Tolerance Default

Statistics

Nodes 114255

Elements 23251

Mesh Metric Orthogonal Quality

Min 9.3223e-004

Max 1.

Average 0.83688

Standard Deviation 0.2713

TABLE 11 Model (A4, B4) > Mesh > Mesh Controls

Object Name Hex Dominant Method Body Sizing Body Sizing 2

State Fully Defined

Scope

Scoping Method Geometry Selection

Geometry 16 Bodies 15 Bodies 1 Body

Definition

Suppressed No

Method Hex Dominant

Element Midside Nodes Use Global Setting

Free Face Mesh Type All Quad

Control Messages Yes, Click To Display...

Type Element Size

Element Size 0.9 mm 2. mm

Behavior Soft

Steady-State Thermal (A5)

TABLE 12 Model (A4, B4) > Analysis

Object Name Steady-State Thermal (A5)

State Solved

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Definition

Physics Type Thermal

Analysis Type Steady-State

Solver Target Mechanical APDL

Options

Generate Input Only No

TABLE 13 Model (A4, B4) > Steady-State Thermal (A5) > Initial Condition

Object Name Initial Temperature

State Fully Defined

Definition

Initial Temperature Uniform Temperature

Initial Temperature Value 22. °C

TABLE 14 Model (A4, B4) > Steady-State Thermal (A5) > Analysis Settings

Object Name Analysis Settings

State Fully Defined

Step Controls

Number Of Steps 1.

Current Step Number 1.

Step End Time 1. s

Auto Time Stepping Program Controlled

Solver Controls

Solver Type Program Controlled

Solver Pivot Checking Program Controlled

Radiosity Controls

Radiosity Solver Program Controlled

Flux Convergence 1.e-004

Maximum Iteration 1000.

Solver Tolerance 1.e-007 W/mm²

Over Relaxation 0.1

Hemicube Resolution 10.

Nonlinear Controls

Heat Convergence Program Controlled

Temperature Convergence Program Controlled

Line Search Program Controlled

Output Controls

Calculate Thermal Flux Yes

General Miscellaneous No

Store Results At All Time Points

Analysis Data Management

Solver Files Directory D:\New folder\CIRCUIT BOARD THERMAL

ANALYSIS_files\dp0\SYS\MECH\

Future Analysis None

Scratch Solver Files Directory

Save MAPDL db No

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Delete Unneeded Files Yes

Nonlinear Solution No

Solver Units Active System

Solver Unit System nmm

TABLE 15 Model (A4, B4) > Steady-State Thermal (A5) > Loads

Object Name Internal Heat Generation Convection

State Fully Defined

Scope

Scoping Method Geometry Selection

Geometry 1 Body 16 Bodies

Definition

Type Internal Heat Generation Convection

Magnitude 5.e-002 W/mm³ (ramped)

Suppressed No

Film Coefficient Tabular Data

Coefficient Type Average Film Temperature

Ambient Temperature 22. °C (ramped)

Convection Matrix Program Controlled

Edit Data For Film Coefficient

Tabular Data

Independent Variable Temperature

Graph Controls

X-Axis Temperature

FIGURE 1 Model (A4, B4) > Steady-State Thermal (A5) > Internal Heat Generation

Page 12: Mechanical report circuit board transient study

FIGURE 2 Model (A4, B4) > Steady-State Thermal (A5) > Convection

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TABLE 16 Model (A4, B4) > Steady-State Thermal (A5) > Convection

Temperature [°C] Convection Coefficient [W/mm²·°C]

21. 5.e-006

Solution (A6)

TABLE 17 Model (A4, B4) > Steady-State Thermal (A5) > Solution

Object Name Solution (A6)

State Solved

Adaptive Mesh Refinement

Max Refinement Loops 1.

Refinement Depth 2.

Information

Status Done

Post Processing

Calculate Beam Section Results No

TABLE 18 Model (A4, B4) > Steady-State Thermal (A5) > Solution (A6) > Solution Information

Object Name Solution Information

State Solved

Solution Information

Solution Output Solver Output

Update Interval 2.5 s

Display Points All

FE Connection Visibility

Activate Visibility Yes

Display All FE Connectors

Draw Connections Attached To All Nodes

Line Color Connection Type

Visible on Results No

Line Thickness Single

Display Type Lines

TABLE 19 Model (A4, B4) > Steady-State Thermal (A5) > Solution (A6) > Results

Object Name Temperature

State Solved

Scope

Scoping Method Geometry Selection

Geometry All Bodies

Definition

Type Temperature

By Time

Display Time Last

Calculate Time History Yes

Identifier

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Suppressed No

Results

Minimum 140.07 °C

Maximum 273.69 °C

Minimum Occurs On Part 2

Maximum Occurs On Part 10

Information

Time 1. s

Load Step 1

Substep 1

Iteration Number 1

FIGURE 3 Model (A4, B4) > Steady-State Thermal (A5) > Solution (A6) > Temperature

TABLE 20 Model (A4, B4) > Steady-State Thermal (A5) > Solution (A6) > Temperature

Time [s] Minimum [°C] Maximum [°C]

1. 140.07 273.69

FIGURE 4 Model (A4, B4) > Steady-State Thermal (A5) > Solution (A6) > Temperature > Image

Page 15: Mechanical report circuit board transient study

Transient Thermal (B5)

TABLE 21 Model (A4, B4) > Analysis

Object Name Transient Thermal (B5)

State Solved

Definition

Physics Type Thermal

Analysis Type Transient

Solver Target Mechanical APDL

Options

Generate Input Only No

TABLE 22 Model (A4, B4) > Transient Thermal (B5) > Initial Condition

Object Name Initial Temperature

State Fully Defined

Definition

Initial Temperature Non-Uniform Temperature

Initial Temperature Environment Steady-State Thermal

Time End Time

Page 16: Mechanical report circuit board transient study

TABLE 23 Model (A4, B4) > Transient Thermal (B5) > Analysis Settings

Object Name Analysis Settings

State Fully Defined

Step Controls

Number Of Steps 1.

Current Step Number 1.

Step End Time 200. s

Auto Time Stepping Program Controlled

Initial Time Step 2. s

Minimum Time Step 0.2 s

Maximum Time Step 20. s

Time Integration On

Solver Controls

Solver Type Program Controlled

Radiosity Controls

Radiosity Solver Program Controlled

Flux Convergence 1.e-004

Maximum Iteration 1000.

Solver Tolerance 1.e-007 W/mm²

Over Relaxation 0.1

Hemicube Resolution 10.

Nonlinear Controls

Heat Convergence Program Controlled

Temperature Convergence Program Controlled

Line Search Program Controlled

Nonlinear Formulation Program Controlled

Output Controls

Calculate Thermal Flux Yes

General Miscellaneous No

Store Results At All Time Points

Analysis Data Management

Solver Files Directory D:\New folder\CIRCUIT BOARD THERMAL ANALYSIS_files\dp0\SYS-

1\MECH\

Future Analysis None

Scratch Solver Files Directory

Save MAPDL db No

Delete Unneeded Files Yes

Nonlinear Solution No

Solver Units Manual

Solver Unit System nmm

TABLE 24 Model (A4, B4) > Transient Thermal (B5) > Loads

Object Name Internal Heat Generation Internal Heat Generation 2

State Fully Defined

Scope

Scoping Method Geometry Selection

Page 17: Mechanical report circuit board transient study

Geometry 1 Body

Definition

Type Internal Heat Generation

Magnitude Tabular Data

Suppressed No

FIGURE 5 Model (A4, B4) > Transient Thermal (B5) > Internal Heat Generation

TABLE 25 Model (A4, B4) > Transient Thermal (B5) > Internal Heat Generation

Steps Time [s] Internal Heat Generation [W/mm³]

1

0. = 0.

20. 0.

20.1 5.e-002

40.

40.1 0.

200. = 0.

FIGURE 6 Model (A4, B4) > Transient Thermal (B5) > Internal Heat Generation 2

Page 18: Mechanical report circuit board transient study

TABLE 26 Model (A4, B4) > Transient Thermal (B5) > Internal Heat Generation 2

Steps Time [s] Internal Heat Generation [W/mm³]

1

0. = 0.

60. 0.

60.1 0.1

70.

70.1 0.

200.

Solution (B6)

TABLE 27 Model (A4, B4) > Transient Thermal (B5) > Solution

Object Name Solution (B6)

State Solved

Adaptive Mesh Refinement

Max Refinement Loops 1.

Refinement Depth 2.

Information

Status Done

Post Processing

Calculate Beam Section Results No

Page 19: Mechanical report circuit board transient study

TABLE 28 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Solution Information

Object Name Solution Information

State Solved

Solution Information

Solution Output Temperature Change

Update Interval 1. s

Display Points All

FE Connection Visibility

Activate Visibility Yes

Display All FE Connectors

Draw Connections Attached To All Nodes

Line Color Connection Type

Visible on Results No

Line Thickness Single

Display Type Lines

FIGURE 7 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Solution Information

TABLE 29 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Solution Information > Result Charts

Object Name Temperature - Global Maximum Temperature - Global Minimum

State Solved

Definition

Type Temperature

Page 20: Mechanical report circuit board transient study

Suppressed No

Scope

Scoping Method Global Maximum Global Minimum

Results

Minimum 188.7 °C 140.62 °C

Maximum 257.01 °C 180.75 °C

FIGURE 8 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Solution Information > Temperature -

Global Maximum

FIGURE 9 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Solution Information > Temperature -

Global Minimum

Page 21: Mechanical report circuit board transient study

TABLE 30 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Results

Object Name Temperature

State Solved

Scope

Scoping Method Geometry Selection

Geometry All Bodies

Definition

Type Temperature

By Time

Display Time 200. s

Calculate Time History Yes

Identifier

Suppressed No

Results

Minimum 180.75 °C

Maximum 188.7 °C

Minimum Occurs On Part 2

Maximum Occurs On Part 2

Minimum Value Over Time

Minimum 140.62 °C

Maximum 180.75 °C

Maximum Value Over Time

Minimum 188.7 °C

Maximum 257.01 °C

Page 22: Mechanical report circuit board transient study

Information

Time 200. s

Load Step 1

Substep 24

Iteration Number 24

FIGURE 10 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature

TABLE 31 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature

Time [s] Minimum [°C] Maximum [°C]

2. 140.62 257.01

4. 141.14 245.48

7.8857 142.1 231.2

13.192 143.39 219.05

20.352 145.12 213.09

24.865 146.22 227.72

29.377 147.34 237.84

40.581 150.3 205.26

44.315 151.3 199.11

48.05 152.32 198.29

55.67 154.39 196.86

67.867 159.61 244.91

74.608 162.93 215.23

76.855 164.06 209.13

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79.102 165.22 204.9

83.439 167.37 199.88

89.729 170.1 195.56

98.685 171.88 192.49

110.46 173.6 191.78

124.91 175.36 191.18

142.54 177.1 190.52

162.54 178.65 189.82

182.54 179.88 189.19

200. 180.75 188.7

FIGURE 11 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature > Image

FIGURE 12 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature > Image

Page 24: Mechanical report circuit board transient study

TABLE 32 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Probes

Object Name Temperature Probe Temperature Probe 2 Temperature Probe 3

State Solved

Definition

Type Temperature

Location Method Geometry Selection

Geometry 1 Body

Suppressed No

Options

Display Time End Time

Spatial Resolution Use Maximum

Results

Temperature 187.04 °C 184.41 °C 185.01 °C

Maximum Value Over Time

Temperature 257.01 °C 237.84 °C 244.91 °C

Minimum Value Over Time

Temperature 187.04 °C 176.71 °C 161.81 °C

Information

Time 200. s

Load Step 1

Page 25: Mechanical report circuit board transient study

Substep 24

Iteration Number 24

FIGURE 13 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe

TABLE 33 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe

Time [s] Temperature Probe [°C]

2. 257.01

4. 245.48

7.8857 231.2

13.192 219.05

20.352 209.5

24.865 205.35

29.377 202.44

40.581 198.39

44.315 197.32

48.05 196.41

55.67 194.85

67.867 193.05

74.608 192.26

76.855 192.02

79.102 191.79

83.439 191.41

89.729 190.94

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98.685 190.37

110.46 189.73

124.91 189.07

142.54 188.42

162.54 187.83

182.54 187.37

200. 187.04

FIGURE 14 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe 2

TABLE 34 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe 2

Time [s] Temperature Probe 2 [°C]

2. 176.71

4. 177.11

7.8857 177.64

13.192 178.

20.352 213.09

24.865 227.72

29.377 237.84

40.581 205.26

44.315 198.77

48.05 194.52

55.67 190.06

67.867 187.08

Page 27: Mechanical report circuit board transient study

74.608 186.53

76.855 186.44

79.102 186.35

83.439 186.18

89.729 185.9

98.685 185.52

110.46 185.11

124.91 184.77

142.54 184.53

162.54 184.41

182.54 184.39

200. 184.41

FIGURE 15 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe 3

TABLE 35 Model (A4, B4) > Transient Thermal (B5) > Solution (B6) > Temperature Probe 3

Time [s] Temperature Probe 3 [°C]

2. 161.81

4. 162.31

7.8857 163.22

13.192 164.28

20.352 165.71

24.865 166.68

29.377 167.73

Page 28: Mechanical report circuit board transient study

40.581 169.93

44.315 170.59

48.05 171.17

55.67 172.08

67.867 244.91

74.608 215.23

76.855 209.13

79.102 204.9

83.439 199.88

89.729 195.56

98.685 191.99

110.46 189.35

124.91 187.48

142.54 186.25

162.54 185.53

182.54 185.17

200. 185.01

Chart

FIGURE 16 Model (A4, B4) > Chart

TABLE 36 Model (A4, B4) > Chart

Page 29: Mechanical report circuit board transient study

Steps Time [s] [A] Temperature Probe

[°C] [B] Temperature Probe 2

[°C] [C] Temperature Probe 3

[°C]

1

2. 257.01 176.71 161.81

4. 245.48 177.11 162.31

7.8857 231.2 177.64 163.22

13.192 219.05 178. 164.28

20.352 209.5 213.09 165.71

24.865 205.35 227.72 166.68

29.377 202.44 237.84 167.73

40.581 198.39 205.26 169.93

44.315 197.32 198.77 170.59

48.05 196.41 194.52 171.17

55.67 194.85 190.06 172.08

67.867 193.05 187.08 244.91

74.608 192.26 186.53 215.23

76.855 192.02 186.44 209.13

79.102 191.79 186.35 204.9

83.439 191.41 186.18 199.88

89.729 190.94 185.9 195.56

98.685 190.37 185.52 191.99

110.46 189.73 185.11 189.35

124.91 189.07 184.77 187.48

142.54 188.42 184.53 186.25

162.54 187.83 184.41 185.53

182.54 187.37 184.39 185.17

200. 187.04 184.41 185.01

Material Data

Structural Steel

TABLE 37 Structural Steel > Constants

Density 7.85e-006 kg mm^-3

Coefficient of Thermal Expansion 1.2e-005 C^-1

Specific Heat 4.34e+005 mJ kg^-1 C^-1

Thermal Conductivity 6.05e-002 W mm^-1 C^-1

Resistivity 1.7e-004 ohm mm

TABLE 38 Structural Steel > Compressive Ultimate Strength

Compressive Ultimate Strength MPa

0

TABLE 39 Structural Steel > Compressive Yield Strength

Compressive Yield Strength MPa

250

Page 30: Mechanical report circuit board transient study

TABLE 40 Structural Steel > Tensile Yield Strength

Tensile Yield Strength MPa

250

TABLE 41 Structural Steel > Tensile Ultimate Strength

Tensile Ultimate Strength MPa

460

TABLE 42 Structural Steel > Isotropic Secant Coefficient of Thermal Expansion

Reference Temperature C

22

TABLE 43 Structural Steel > Alternating Stress Mean Stress

Alternating Stress MPa Cycles Mean Stress MPa

3999 10 0

2827 20 0

1896 50 0

1413 100 0

1069 200 0

441 2000 0

262 10000 0

214 20000 0

138 1.e+005 0

114 2.e+005 0

86.2 1.e+006 0

TABLE 44 Structural Steel > Strain-Life Parameters

Strength Coefficient MPa

Strength Exponent

Ductility Coefficient

Ductility Exponent

Cyclic Strength Coefficient MPa

Cyclic Strain Hardening Exponent

920 -0.106 0.213 -0.47 1000 0.2

TABLE 45 Structural Steel > Isotropic Elasticity

Temperature C Young's Modulus MPa Poisson's Ratio Bulk Modulus MPa Shear Modulus MPa

2.e+005 0.3 1.6667e+005 76923

TABLE 46 Structural Steel > Isotropic Relative Permeability

Relative Permeability

10000