### INTRODUCTION TO ABAQUS

```Example 2: Lagrangian modeling for an impact
problem
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EXAMPLE 2
1
Direct impact problem
A rigid body (5 kg) with 50 m/sec impacts
on the aluminum plate.
 Aluminum plate
•
Dimensions: 1m× 1m× 0.002m
•
Material type: Linearly elastic behavior with
isotropic hardening
•
Element : Shell elements (S4R)
•
Mesh size: 0.01m-0.05m
•
Boundary condition: Four edges are fully
constrained.
 Rigid body impactor
•
Shape: cylinder with two hemispherical caps
•
Dimensions: 0.32 in length × 0.16 m in a
diameter
•
Length/ diameter = 2
•
Initial bird mass: 5 kg
•
Magnitude of initial velocity: VZ = -50 m/s
•
Rigid elements (R3D4)
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EXAMPLE 2
2
Target structure
• Model type: Shell model
• Shape: Square plate
• Dimensions: 1m× 1m
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EXAMPLE 2
3
Reference geometry for an Impactor
• Model type: Discrete rigid model
• Shape: Cylinder with hemispherical cap and straight end
• Dimensions: 0.16 m in a diameter × 0.32 m in length
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EXAMPLE 2
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EXAMPLE 2
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EXAMPLE 2
6
Coordinate
(0.5, 0.5, 0.01)
Coordinate
(0,0,0)
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EXAMPLE 2
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EXAMPLE 2
8
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EXAMPLE 2
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EXAMPLE 2
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EXAMPLE 2
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EXAMPLE 2
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EXAMPLE 2
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Animation
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EXAMPLE 2
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Animation
Target: 0 <X < 0.8
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EXAMPLE 2
15
Lagrangian modeling is very traditional, available
 ABAQUS 6.12 documentation: Abaqus Analysis User's Manual
•
“Rigid elements,” Section 30.3
 ABAQUS 6.12 documentation: Abaqus Example Problems Manual
•
“Rigid projectile impacting eroding plate,” Section 2.1.3
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EXAMPLE 2
16
```