CAE Benchmark for structural simulation tools at BSH

Presentation date: 25th October 2017 | 8 a.m.Presenter Name: Doris GschwendtnerRoom name: Cannes

E-Mail: Doris.Gschwendtner@bshg.comTel.: +49 8669 30 5655Address: BSH Hausgeräte GmbH

Werner-von-Siemens-Str. 20083301 Traunreut

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

About BSH |BSH at a glance

1967

Founded as a joint venture between

Siemens AG and Robert Bosch GmbH

2016

• 41 factories in Germany, China, France, Greece, India, Peru, Poland, Russia, Slovakia, Slovenia, Spain, Turkey, USA

• 58 300 Employees of which 3 500 R&D specialists

• Revenue 2016 13.1 bn. Euros

• Worldwide No. 2 in market | Europe No. 1 in market

BSH Hausgeräte GmbH

Founded in 1967

Robert Bosch GmbH

100%

About BSH | Product Portfolio

About BSH | Our Brands

BSH Home Appliances Group is a Trademark Licensee of Siemens AG for the brand Siemens and of Robert Bosch GmbH for the brand Bosch.

About BSH | Siemens and BSΗ

Siemens statement„NX is able to solve a

major amount ofBSH‘s simulation

tasks.“

Strategy of Siemens enhancing CAE

portfolio (LMS, cdAdapco)

Strategic partnership between Siemens and

BSH since January 2016

About BSH | CAE Simulation at BSH

• ~ 150 users worldwide(Europe + China)

• ~ 45 structural mechanicusers

Fluid Dynamics30%

Structural34%

Crash2%

Molding28%

System6%

Fluid Dynamics

Structural

Crash

Molding

System

• Siemens tools are used in some sites

Simulation at Siemens

NX CAE / NX FlowLMS

CD-Adapco

Teamcenter

Simcenter 1D/3DTeamcenter

Benchmark @ BSH

Simulation at Siemens

…2012

• Coming from I-DEAS

• Purchasing Nastran (NX Nastran)

• 2012: acquisition of LMS

2016

• January: Acquisition of CD-adapco

• March – July: BSH Structural Benchmark based on NX 10.0.3.x / 2016-current tool at BSH

• July: introduction of Simcenter 11

2017…

• October: introduction of dedicated CAE support at Siemens

• October: PLM Europe

• Simcenter 12

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

Only structuralmechanics

Not a completebenchmark

Good impressionand overview

General Topics | About the Benchmark

General Topics | Goals of the Benchmark

Prove / disprovethe Siemens statement

Find out differences in the software

Evaluation of total costs of ownership

Outlook

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

Test Cases | Overview

• Four low to medium complex models to compare pre-/ postprocessor and solver

• Models were calculated by Dr. Binde Ingenieure and BSH engineers

• The Models

– Single part (material modeling): tensile test

– Small assembly (contacts): silicon sealing

– Medium assembly: door panel – glass package

– Thermal + mechanical coupling: cavity base

Test Case 1 | Tensile Test

Description

• Material: plastic

• Load: forced displacement of 2mm in z-direction

• Result: plot force over displacement andcompare with test

Challenge

• Material modeling

• Receive the same results as in the tests

Test Case 1 | Tensile Test | Result

BSH Siemens

Test Case 2 | Silicon Sealing

Description

• Silicon sealing is bent by 90° between to metal sheets.

• Result: compare deformation (direction andmagnitude)

Challenges

• Hyperelastic material

• Contact situation

BSH Siemens

Test Case 2 | Silicon Sealing | Result

Test Case 3 | Door Panel – Glass Package

Description

• The mounting process of the oven glass package should be modelled with the help of the FEM to analyze the press-stress condition.

Challenges

• All initial penetration of the 3D-CAD-parts should be eliminated

• Τo generate the pre-stress condition, the two pre-stress springs between the inner and the intermediate glass panel, which are pushing the glasses against the retainer, should be strutted between the panels.

• Gravity

BSH Siemens

Test Case 3 | Door Panel | Result

Total Deformation

Test Case 4 | Cavity Base

Description

• Bottom Sheet of a cavity

• Thermally loaded by a heating element

• All three heat transfer mechanisms

• Second step: deformation of the sheet metal part is simulated due to thermal expansion.

Challenges

• Coupling of thermal and structural analysis by using all three heat transfer mechanism (conduction, convection, radiation)

BSH Siemens

Test Case 4 | Cavity Base | Result

Total deformation

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

Main Criteria

Software Costs

Integrated Tool Chain

Raising Efficiency

Criterion 1 | Software Costs

Very high license costs for CAE software

• Specialized Software

• Costs per user are significant higher than in CAD and number of user much lower

Existing contract with Siemens

• Strategic partnership

• Good cooperation

Criterion 2 | Integrated Tool Chain

+ NX - NXProblems with TC-Integration due to

Update cyclemajor updates:

>1x yearly in CAEevery 2 years in CAD

Problems with CAD and CAE users

working on one partwith different

versions – newerversion „wins“

Standard CAD toolin BSH

One environment for several analysis / tasks (e.g. CAD,

CAM, CAE)

Improvements in work/implementedwith Simcenter!

Criterion 2 | Integrated Tool Chain

+ NX - NXProblems with TC-Integration due to

Update cyclemajor updates:

>1x yearly in CAEevery 2 years in CAD

Problems with CAD and CAE users

working on one partwith different

versions – newerversion „wins“

Standard CAD toolin BSH

One environment for several analysis / tasks (e.g. CAD,

CAM, CAE)

Improvements in work/implementedwith Simcenter!

Siemens BSH

Summary

Criterion 3 | Raising Efficiency

Efficiency

Man Power

License

Hardware

Criterion 3 | Raising Efficiency

Criteria to consider

• Handling

(user interface, usability)

• Performance

(calculating speed)

• Speed in general

(effort to set up a model, loading

times…)

• Quality of results

Preprocessing

Solver

Postprocessing

• Speed

• Convergence

• Geometry

• Meshing

• Boundary Conditions

• Material

• Speed

• Functionality

S

U

P

P

O

R

T

Criterion 3 | Raising Efficiency | Support

Software

• User support

• Technical assistance andconsulting

• Extensions (macros)

• Trainings

Hardware

• Cluster setup

• Remote solutions(e.g. Citrix connection)

Know-How

• Special trainings

• Special assistance

• Deep applicational and technicalknowledge in all areas coveredby the software

Worldwide and in local language

Criterion 3 | Raising Efficiency | Differences in Workflow

• Video demonstration about how to set up the tensile test.

NX BSH

Based on NX10 (2015)

Criterion 3 | Raising Efficiency | Differences in Workflow

• Video demonstration about how to set up the tensile test.

NX BSH

Based on Ansys 17.2 (2016)

Siemens BSH

Geometry preparation

Meshing

Setup

Summary

Criterion 3 | Raising Efficiency | Preprocessing

Criterion 3 | Raising Efficiency | Solver

Siemens BSH

Functionality

Speed

Usability

Summary

Criterion 3 | Raising Efficiency | Postprocessing

Siemens BSH

Function range

Automation

Summary

Content

General

• About BSH

• About the benchmark

Benchmark

• General information

• Test cases

• Main criteria

Summary• Results of the benchmark & Outlook

Results| Statement of Siemens

Prove / disprovethe Siemens statement

Find out differences in the software

Evaluation of total costs of ownership

Outlook

Results | Statement of Siemens | 01/2016

NX is able to solve a major amount of our simulation tasks.

Effort to set up the simulation is higher than in our tool

More complicated workflow

Some key features missing / not well implemented

NX may be too complex for design engineers

Support at Siemens is improving, positive development

NX BSH

Results | Statement of Siemens | Now

NX is able to solve a major amount of our simulation tasks.

Siemens is very interested in improvements and makes constant effort to improve the tool chain for

simulation

NX BSH

Required features and improvements for workflow are considered.

Some features are already implemented in newer versions than currently used in BSH.

Results | Differences

Prove / disprovethe Siemens statement

Find out differences in the software

Evaluation of total costs of ownership

Outlook

Siemens BSH

Integrated Tool Chain

Preprocessing

Solver

Postprocessing

Support (Status 07/2016)

Results | Differences | Conclusion

Siemens BSH

Integrated Tool Chain

Preprocessing

Solver

Postprocessing

Support (Status 10/2017)

Results | Differences | Conclusion

Results | Total costs of ownership (TCO)

Prove / disprovethe Siemens statement

Find out differences in the software

Evaluation of total costs of ownership

Outlook

Results | Total costs of ownership (TCO)

IT Costs

Hardware

Licenses

Data Storage

Basic Costs

Licenses

Support

Siemens - NEW BSH - currently

Results | Total costs of ownership (TCO)

Human Resources

Man Power

Retraining

NX CAE Rollout

Siemens - NEW BSH - currently

IT

Results | Total costs of ownership (TCO)

O

V

E

R

A

L

L

C

O

S

T

S

Siemens - NEW BSH - currently

Results | Outlook

Prove / disprovethe Siemens statement

Find out differences in the software

Evaluation of total costs of ownership

Outlook

• Results were discussed with Siemens and main points were addressed

• Siemens was highly interested in theresults and is open minded andcooperative

• Close cooperation for furtherimprovement, lots of pro-activeactivities from Siemens

• First progress in many areas, somefeatures are already implemented in newer versions

Next steps at BSH andSiemens

Results | Outlook

Results | Outlook

Together we…

Track the improvement

Push the development

Review the progress

www.plm-europe.orgwww.siemens.com/plm

October 2017

Thank you very much foryour attention!