第 1 部 (30) プラスチック及び FRP 構造物の残留応力解析

概要

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A method for analyzing residual stress and deformation caused by cooling after the curing process of plastics and FRP products has been developed. This analysis method considers the complicated characteristic that the elastic modulus of plastics depends on time and temperature, namely, viscoelasticity. It also considers the dependence of elastic modulus on the direction of the load. It can thus solve the behavior of orthotropic visco-elastic materials. In particular, only four parameters are needed to describe the relaxation modulus of visco-elastic materials easily and precisely with exponential function in this method. In order to describe the orthotropic visco-elastic behavior of FRP, Hill's orthotropic parameters are used. A computer program based on exponential function and Hill's orthotropic parameters for analyzing the residual stress and deformation of 3-dimensional products with the finite element method was developed. It is concluded that the analyzed deformation and stress of the program agreed well with experimental results.
社団法人日本機械学会の論文
2003-03-27