SDRC IDEAS Finite Element Analysis

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SDRC I-DEASFinite Element Analysis

• Concurrent Engineering I
• MEM 800 / 380
• Lecture week 6 --- FEM
• Instructor Dr. Jack Zhou

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SDRC I-DEAS Simulation Application

• Finite Element Analysis (FEA)
• What is Finite Element Analysis?
• Types of Finite Element Analysis (FEA)
• Structural Mechanics
• Linear Elastic, Static, Trusses, Beams, Frames,
  Plates, 2-D 3-D Solids
• Advanced Structural Mechanics
• Buckling, Frequency Analysis, Dynamic Analysis,
  Fracture Mechanics, Composite Analysis,
  Non-linear Analysis
• Non Structural Applications
• Thermal Analysis, Fluid Flow Analysis, Magnetic
  Field Analysis

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SDRC I-DEAS Simulation Application

• Tasks Within Simulation Application
• Master Modeler -- Construct solid models
• Master Surfacing -- Construct complicated
  surfaces
• Boundary Conditions -- Apply BCs to parts
• Meshing -- Mesh part using finite elements
• Model Solution -- Solve the part FEM
• Optimization -- Optimize the design according to
  results
• Beam Sections, Laminates, Weld Locator,
  Thermoplastic Molding, Thermoset Molding, TMG
  Thermal Analysis, Vibro-Acoustics, Electro-system
  Cooling

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SDRC I-DEAS Simulation Application

• Todays Lecture
• Structural Analysis
• Linear Elastic
• 3-D Solid
• Example

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SDRC I-DEAS Simulation Application

• How to perform FEA

Define FE Model
Create Part
Apply BCs
Mesh the Model
Analyze
View Results
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EXAMPLE - Step 1

• STEP 1 ..Create the bracket

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EXAMPLE - Step 2

• STEP 2 ..Create FE Model

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EXAMPLE - Step 3

• STEP 3 ..Apply Displacement Constraints

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EXAMPLE - Step 4

• STEP 4 ..Apply Forces at the end of the beam

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EXAMPLE - Step 5

• STEP 5 ..Change to meshing application Define
  Mesh on Surface

Define Mesh on Surface and on Curvature
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EXAMPLE - Step 6

• STEP 6 ..Define and Check the Meshing of the
  Volume

Define Volume mesh
Check the Mesh for Distortion Stretch
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EXAMPLE - Step 7

• STEP 7 ..Update the Mesh switch tasks

Update the Mesh
Switch to Model Solution Task
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EXAMPLE - Step 8

• STEP 8 ..Solve the Model switch tasks

Switch to Post Processing Task
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EXAMPLE - Step 9

• STEP 9 ..View Results

What is this?
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EXAMPLE - ??

• What do these results represent?

Is this Correct? Will it deform this much?
Max Min Displacement
Displacement according to Boundary Condition set 1
Max Min Stress
Stress according to Boundary Condition set 1
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EXAMPLE - ??

• What material was used at create FEM model?

What matl properties are required for linear
Static analysis?
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Where to find this lecture and other help?

• http//cadpc3.mem.drexel.edu/
• Click on Teaching Activities
• Look at week6 materials
• http//cadpc3.mem.drexel.edu
• Look for tutorial on FEA

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Home Work1. Read chapter 11 of
SDRC I-deas Student Guide2. Do FEA for the
example part and compare the result with your
mechanics calculation result, and then explain
them.