PMI泡沫夹层结构的材料非线性分析
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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 linear analytical,elastic-plastic analytical and experimental results,it demonstrates the accuracy of this nonlinear elastic material finite element model.
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 linear analytical,elastic-plastic analytical and experimental results,it demonstrates the accuracy of this nonlinear elastic material finite element model.
引文
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[13]郑核桩,黄争鸣,唐寿高.基于非线性本构关系的有限元计算复合材料层合板的强度[J].玻璃钢/复合材料,2004,(5):10-15.
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[2]Welker T C.Experimental and computational failure analysis ofgraphite/bismaleimide laminate composites and carbon form in sand-wich construction[D].Wright-Patterson AFB,OH:School of En-gineering and Management,2003.
[3]冯消冰,王伟.2MW风机复合材料叶片材料及工艺研究[J].玻璃钢/复合材料,2010,(7):84-88.
[4]赵鹏飞,赵景丽,何颖.共固化成型无人机用复合材料/蜂窝夹层结构面板的性能[J].玻璃钢/复合材料,2009,(1):62-64.
[5]陈绍杰,申振华,徐鹤山.复合材料与风力机叶片[J].玻璃钢/复合材料,2008,(3):42-46.
[6]李真,周仕刚,薛元德.剪切对泡沫夹层结构梁弯曲性能的影响[J].玻璃钢/复合材料,2011,(2):19-23.
[7]杜善义,关志东.我国大型客机先进复合材料技术应对策略思考[J].复合材料学报,2008,25(1):1-10.
[8]郑锡涛,孙秦,李野,柴亚南,曹正华.全厚度缝合复合材料泡沫芯夹层结构力学性能研究与损伤容限评定[J].复合材料学报,2006,23(6):29-36.
[9]孙春方,薛元德,胡培.复合材料泡沫夹芯结构力学性能与试验方法[J].玻璃钢/复合材料,2005,(2):3-6.
[10]孙春方,李文晓,薛元德,胡培.高速列车用PMI泡沫力学性能研究[J].玻璃钢/复合材料,2006,(4):13-19.
[11]卢子兴.复合泡沫塑料力学行为的研究综述[J].力学进展,2004,34(3):341-348.
[12]孙春方,薛元德,李文晓.铝面板PMI泡沫芯夹层材料力学性能研究[J].建筑材料学报,2007,10(3):364-368.
[13]郑核桩,黄争鸣,唐寿高.基于非线性本构关系的有限元计算复合材料层合板的强度[J].玻璃钢/复合材料,2004,(5):10-15.
[14]郭乙木,陶伟明,庄茁.线性与非线性有限元及其应用[M].北京:机械工业出版社,2003.
[15]Huang ZM,Ramakrishna S.Towards automatic designing of 2D bi-axial woven and braided fabric reinforced composites[J].Journal ofcomposite material,2002,36(13):1541-1579.
[16]MSC.Marc User's Guide,MSC公司,2005.
[17]陈火红,尹伟奇,薛小香.MSC.Marc二次开发指南[M].北京:科学出版社,2003.
[18]刘浩平,张令心,石磊.基于MSC.Marc二次开发的土体静力和地震非线性分析方法[J].地震工程与工程振动,2008,28(3):178-183.
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