제 1편 – OS-V: 0010 Elliptic Membrane

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

그림1

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

그림35All 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.

This entry was posted in OptiStruct 숨은 예제 : Linear.

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