WS-17 大温度増分・増分反復全ひずみ法 : 計算時間の短縮化を目差して

概要

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The thermal elastic-plastic analysis for the welding transient and residual stresses and deformations needs the huge computation time to obtain the accurate results. In this study, a new method, a step iterative total strain method, will be developed to shorten the computation time largely, keeping high accuracy. For the large increment of temperature the basic theory of the step iterative total strain method was developed for the thermal elastic-plastic state, taking into account the change from elastic state to elastic-plastic state in one increment and the temperature-dependencies of the mechanical properties. Based on the theory (the thermal elastic-plastic constitutive equation), the equilibrium equation (the stiffness equation) was developed for the finite element method. New FEM program for thermal elastic-plastic analysis is under development, based on the above theory, now.
一般社団法人日本機械学会の論文
2003-10-17