摘要
在辛体系下描述了二维热粘弹性力学问题.利用辛正交归一关系和积分变换得到了对偶方程的解,即圣维南解和局部解,从而将原问题转化为寻找零本征值本征解和非零本征值本征解问题.同时给出了一种辛空间中处理端部条件问题的有效方法.根据该方法,在数值算例中讨论了端部的局部效应问题。这种辛方法和数值算法为解决其他问题提供了一种可行的思路.
Two-dimensional problems of thermo-viscoelasticity in the symplectic system were described. With the aid of the adjoint relationship of symplectic ortho-normalization and integral transformation, solutions of duality equations were obtained, or Saint-Venant solutions and local solutions, reducing the original problem to finding zero eigenvalue solutions and non-zero eigenvalue solutions. Meanwhile, an effective method for end conditions was given in the symplectic space. As its application, local effects in the ends were discussed in the numerical results. The symplectic method and numerical method provide an idea for other researches also.
基金
Supported by NNSF of China(No.10672031)and Specialized Research Fund for the Doctoral Program of Higher Education.
关键词
热粘弹性
对偶
本征值
局部效应
辛方法
thermo-viscoelasticity
duality
eigenvalue
local effect
symplectic method
