ANALYSIS OF ELASTO-PLASTIC POSTBUCKLING AND ENERGY RELEASE RATE FOR DELAMINATED FIBER METAL LAMINATED BEAMS IN THERMAL ENVIRONMENT  

作　　者：Yiming Fu Yang Chen Xuefei Shao 

机构地区：[1]State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University [2]College of Mechanical and Vehicle Engineering,Hunan University

出　　处：《Acta Mechanica Solida Sinica》2015年第6期693-705,共13页固体力学学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.11272117)

摘　　要：The elasto-plastic postbuckling of fiber metal laminated beams with delamination and the energy release rate along the delamination front are discussed in this paper. Considering geometrical nonlinearity, thermal environment and geometrical initial imperfection, the incremental nonlinear equilibrium equations of delaminated fiber metal laminated beams are established, which are solved using the differential quadrature method and iterative method. Based on these, according to the J-integral theory, the elasto-plastic energy release rate is studied. The effects of some important parameters on the elasto-plastic postbuckling behavior and energy release rate of the aramid reinforced aluminum laminated beams are discussed in details.The elasto-plastic postbuckling of fiber metal laminated beams with delamination and the energy release rate along the delamination front are discussed in this paper. Considering geometrical nonlinearity, thermal environment and geometrical initial imperfection, the incremental nonlinear equilibrium equations of delaminated fiber metal laminated beams are established, which are solved using the differential quadrature method and iterative method. Based on these, according to the J-integral theory, the elasto-plastic energy release rate is studied. The effects of some important parameters on the elasto-plastic postbuckling behavior and energy release rate of the aramid reinforced aluminum laminated beams are discussed in details.

关 键 词：fiber metal laminated beams DELAMINATION temperature effect elasto-plastic post- buckling elasto-plastic energy release rate 

分 类 号：O344.3[理学—固体力学]