Cohesive Element Insertion Presentation

11
Cohesive Element Insertion

Transcript of Cohesive Element Insertion Presentation

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Outline Procedure

1. Parts2. Properties

3. Section Assignments

4. Mesh

5. Assembly

6. Step

7. Interaction

8. Load/Boundary Conditions

9. Submit

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Model PartsAKA “bulk material”

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Properties

Define bulk material properties• Mechanical > Elasticity > Elastic

• Young’s modulus = 210 e 6

• Poisson’s Ratio = 0.3

• Define cohesive material properties

• Mechanical > Elasticity > Elastic

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Properties

• Define cohesive materialproperties

• Mechanical > Elasticity > Elastic

• Type > Traction

• E/Enn = 35.5e6

• G1/Ess = 35.5e6

• G2/Ett = 35.5e6

• Mechanical > DamageEvolution

• Suboption > Damage Evolution

• Type: Energy

• Fracture Energy = 2000

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Mesh Part

Seed part• Mesh part

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Offset layer for cohesive layer

Mesh > edit• Category > Mesh

• Method > Offset (createsolid layers)

• Command line dropdown menu select “by

angle”• Offset Mesh window

Share nodes with baseshell/surface

Create a set for newelements

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Section Assignment

Create section• Section-1 > Solid > Homogeneous

• Section-2 > Other > Cohesive

• Section assign

• On the model Bulk elements toSolid section

• On command line click “Sets…”button > OffsetElements-1

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Assembly

Create instance• Click each part in the

Create Instance windowand Apply

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Step

Create step• Nlgeom > on

• Incrementation tab

• Maximum number of increments= 10000

Increment size: Initial = 0.1 ||Minimum=1e-015 ||Maximum=1

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Interaction

Select tie constraint• The master surface should be on the bulk material

• The slave surface should be on the cohesive layer

Assembly

• Translate Instance

• On the Viewport select the part to translate thenpick first corner followed by second corner.

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Loads

Apply boundary conditions• Apply displacement loads or forces

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Job

Create job• Submit

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Results