다음 예제 모델은 타원형의 부채꼴 형상으로 0.1m의 두께를 가지는 박판 부재이며 Linear Static Analysis을 통해 X축 선상에 있는 안쪽 포인트 D의 Direct stress σyy 값을 살펴 볼 수 있습니다
Figure 0010-1: FE-Model with Boundary Conditions and Loadcases
Benchmark Model
모델 구성은 First order (Hexahedral, Penta, Tetra, Quad and Tria) elements 와 Second order (Hexahedral, Penta, Tetra, Quad and Tria) elements를 이용한 각 타입별 Coarse & Fine Mesh로 생성되어 있으며 모델의 외곽면에 10MPa의 일정한 압력이 적용되어 있고 구속조건은 왼편(AB)은 x-translation displacements (Fix dof 1),
오른편(CD)은 y-translation displacements (Fix dof 2)가 부여 되어 있습니다
위의 그림을 참고하시기 바랍니다
| The material properties are: |
| Young’s Modulus 210 x 10^3 MPa |
| Poisson’s Ratio 0.3 |
Linear Static Analysis Results
Viewing the Result
All results are normalized with the target value (92.7 MPa)
아래표의 해석 결과 값을 참조 하시기 바랍니다
| Direct Stress at Point D Normalized with the Target (MPa) Value |
| Solid Wedges: | ||
| Hex8 coarse | 63.15 | 1.467933492 |
| Hex20 coarse | 87.46 | 1.059913103 |
| Hex8 fine | 79.80 | 1.161654135 |
| Hex20 fine | 91.01 | 1.018569388 |
| Solid Wedges: | ||
| Penta6 coarse | 48.68 | 1.904272802 |
| Penta15 coarse | 95.21 | 0.973637223 |
| Penta6 fine | 67.30 | 1.377414562 |
| Penta15 fine | 94.28 | 0.983241409 |
| Solid Tetrahedral: | ||
| Tetra4 coarse | 53.34 | 1.737907762 |
| Tetra10 coarse | 95.96 | 0.966027511 |
| Tetra4 fine | 66.56 | 1.392728365 |
| Tetra10 fine | 95.28 | 0.972921914 |
| Quad Shells: | ||
| Quad4 coarse | 61.83 | 1.499272198 |
| Quad8 coarse | 86.67 | 1.069574247 |
| Quad4 fine | 79.7 | 1.163111669 |
| Quad8 fine | 91.48 | 1.013336248 |
| Triangular Shells: | ||
| Tria3 coarse | 54.06 | 1.714761376 |
| Tria6 coarse | 97.07 | 0.954980942 |
| Tria3 fine | 74.21 | 1.249157795 |
| Tria6 fine | 96.64 | 0.959230132 |
Model Files
The model files used in this example include
install_directory/demos/hwsolvers/optistruct/verification
/LE1Hex8C.fem, /LE1Hex20C.fem, /LE1Hex8F.fem, /LE1Hex20F.fem
/LE1Pen6C.fem, /LE1Pen15C.fem, /LE1Pen6F.fem, /LE1Pen15F.fem,
/LE1Tet4C.fem, /LE1Tet10C.fem, /LE1Tet4F.fem, /LE1Tet10F.fem
/LE1Quad4C.fem, /LE1Quad8C.fem, /LE1Quad4F.fem, /LE1Quad8F.fem
/LE1Tria3C.fem, /LE1Tria6C.fem, /LE1Tria3F.fem, /LE1Tria6F.fem
Reference
NAFEMS Ltd, The Standard NAFEMS BENCHMARKS TNSB Rev. 3, NAFEMS Ltd, Scottish Enterprise Technology Park, Whitworth Building, East Kilbride, Glasgow, United Kingdom, 1990.
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