根据以多孔材料理论为基础建立的非线性本构关系,通过对空心圆柱形金属橡胶材料做静态试验并对试验数据进行拟合,得到了非线性本构关系模型中各项系数与材料高度的变化关系,发现材料的高度越大,材料的非线性本构关系的各项系数的绝对值越大,从而实现了对由金属橡胶材料所组成的结构在密度和承载面积一定,高度发生变化情况下的非线性本构关系的预估。最后运用算例进行验证,说明运用金属橡胶材料非线性本构关系的各项系数和材料高度的关系式能准确地预估材料的非线性本构关系。
According to nonlinear constitutive relationship based on porous materials theory,through static experiments for hollow cylinders of metal-rubber,data were fitted,and then relationship between every coefficient in the nonlinear constitutive relationship and height was obtained. The results show that the absolute value of every coefficient in the non-linear constitutive relationship of metal-rubber is greater with the height of the material increasing.Prediction for nonlinear constitutive relationship of metal-rubber was achieved under the condition of constant density,constant loaded area and variational height. Lastly,it was proved by the case that the relationship between every coefficient in the nonlinear constitutive relationship of metal-rubber and height can predict nonlinear constitutive relationship correctly.