Plate With Hole
description
Transcript of Plate With Hole
Plane Frame 1
Step
00
2-D Linear Static Analysis
Model
- 1/4 symmetric Model
- Unit: N, mm
- Isotropic Elastic Material
- Membrane
Loads and Boundary
Conditions
- Edge Pressure
- Constraint (Symmetric)
Results Verification
-
Displacement/Deformation
- Probe Result
Plate with a Hole
¼
Model
Summary
Summary
Plane Frame 2
Step
00 Problem
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Step
This problem has 2 planes of symmetry, so we will cut the model in 2 in order
to:
-Reduce the size of the problem
-Reduce model time
-Introduce a blocking of movement of this plate which is only submitted to
pressure load
00 Problem reduction due to symmetry
Plane Frame 17
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17
Total Solutions for True Analysis-driven Design
Analysis of results
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18
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Comparison for different mesh sizes and types
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19
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We will use 2 types of mesh:
-Linear Triangle mesh (TRI3) has 3 nodes/element
-Quadratic Triangle mesh has 6 nodes/element
Linear and quadratic elements
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20
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Results for linear triangle elements
Plane Frame 21
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Results for quadratic triangle elements
Plane Frame 22
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22
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Comparison between triangle elements
Plane Frame 23
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Comparison between quad elements
Plane Frame 24
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24
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Results for linear triangle elements
Plane Frame 25
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Results for quadratic triangle elements
Plane Frame 26
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Comparison between triangle elements
Plane Frame 27
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Meshing adapted to the geometry
To get better accuracy and be efficient (less number of elements), use adapted mesh
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28
Total Solutions for True Analysis-driven Design
Conclusion
-Always prefer linear quad elements to linear triangle elements
-To get superior accuracy for ordinary displacement analysis, use 2nd order
triangle elements
-For stress analysis, linear elements converge more slowly than for simple
displacement analysis
-> When performing stress analysis, always use 2nd order elements