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首页> 外文会议>SSTA(Shell Structures: Theory and Applications) Conference; 20051012-14; Jurata(PL) >Three-dimensional FE simulation of the behavior of thin membrane with initiated defect
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Three-dimensional FE simulation of the behavior of thin membrane with initiated defect

机译：具有初始缺陷的薄膜行为的三维有限元模拟

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The thin membrane with initiated defect under uniform pressure is considered. This type of structure presents the opening diaphragm used in shock tubes. Initiated defect is presented by rectangular single edge notch, the layout of which is of the cross form in the membrane mid-plane. In order to capture the influence of the defect, the three-dimensional finite element model based on the large strain elastic-plastic approach is applied. The local structured mesh is used in the vicinity of the defect, while two-dimensional free meshing is applied for the remaining part of membrane. The quality of the 3D model was tested by comparing it with a 2D model for continuous plate with zero defect. This model was applied to investigate the influence of the defect depth on membrane behavior.
机译：考虑在均匀压力下具有引发缺陷的薄膜。这种类型的结构提供了用于冲击管的开口隔膜。最初的缺陷是由矩形单边切口引起的，该切口在膜的中平面上呈十字形。为了捕捉缺陷的影响，应用了基于大应变弹塑性方法的三维有限元模型。在缺陷附近使用局部结构化网格，而对膜的其余部分进行二维自由网格化。通过与具有零缺陷的连续板的2D模型进行比较，测试了3D模型的质量。该模型用于研究缺陷深度对膜行为的影响。

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