A deformation mechanism based material model for topology optimization of laminated composite plates and shells

被引：14
|
作者：
Luo, Quantian [1 ]
Tong, Liyong [1 ]
机构：
[1] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
来源：
COMPOSITE STRUCTURES | 2017年 / 159卷
基金：
澳大利亚研究理事会;
关键词：
Material model; Plate and shell; Large deflection; Optimization; GEOMETRICALLY NONLINEAR STRUCTURES; DESIGN; FORMULATION; ALGORITHM; ELEMENTS; SHAPE;
D O I：
10.1016/j.compstruct.2016.09.056
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper presents a novel deformation mechanism based material model for topology optimization of laminated plates and shells considering large displacements. Discussed firstly are the one-node hinges in optimum designs of plate and shell structures and the numerical issues caused by void elements in geometrical nonlinear analysis. To circumvent these two problems, we propose a new material model in which different penalties are applied to different strain energy terms related to extensional, shear, bending and extensional-bending coupling deformation mechanisms and void elements are removed in nonlinear finite element analysis. An efficient algorithm is developed by using the present material model and the moving iso-surface threshold method. Numerical results are presented for isotropic and composite plates and shells and compared with those available in the literature to validate the present material model. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：246 / 256
页数：11
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