线弹性体本构方程对称性的逆命题研究

THE INVERSE PROPOSITION ABOUT THE SYMMETRY OF LINEAR CONSTITUTIVE LAW

基于线弹性体本构方程系数矩阵的对称性,提出了其对应的逆命题问题,即若材料本构方程是线性且对称的,能否由此确定物体是完全弹性的?论文通过构造势函数的方法对该问题给出了肯定的回答,从而论证了对于符合线性本构关系的材料,其本构方程的对称性与物体的完全弹性相互蕴含,因而是相互等价的.

From the symmetry of the coefficient matrix of the constitutive law of linear elastic bodies, one may motivated to consider the corresponding inverse proposition, i.e. whether or not the symmetry of the linear constitutive law implies the perfect elasticity of the body. A positive answer of this question may be made via the construction of an elastic potential function for the body, which indicates that the symmetry of the constitutive equation and the perfect elasticity of body are equivalent.