PMI泡沫夹层结构的材料非线性分析  

FINITE ELEMENT ANALYSIS FOR MATERIAL NONLINEARITY OF PMI-FOAM CORED SANDWICH

作　　者：汤超[1] 乔玉炜 

机构地区：[1]中国商飞上海飞机设计研究院,上海200232 [2]西门子工业软件(上海)有限公司,上海200040

出　　处：《玻璃钢／复合材料》2013年第1期14-19,共6页Fiber Reinforced Plastics/Composites

摘　　要：根据泡沫材料相关性能数据,定义了该材料的三维非线性弹性本构关系。利用MSC.Nastran600解算器中的用户二次开发程序接口,采用fortran语言将该本构关系写入,建立了泡沫材料的非线性有限元计算模型。采用该模型对铝面板泡沫夹层结构进行了实例分析,并将线性、弹塑性分析结果与实验结果进行了对比,验证了该模型的正确性。Based on the provided mechanical property data of the given foam, the nonlinear elastic constitute for this foam is defined. And it is written into a material user subroutine of MSC. Nastran secondary development by Fortran to form the nonlinear analysis model in FEM. An example of foam-cored sandwich aluminum panel is calculated using this method. Through the comparison with the tal results, it demonstrates the accuracy of this nonlinear linear analytical, elastic-plastic analytical and experimenelastic material finite element model.

关 键 词：泡沫 非线性本构 夹层结构 MSC.Nastran二次开发 

分 类 号：TB332[一般工业技术—材料科学与工程]