The relation between deformation and stress was explained with nonlinear elastic increment theory, and the method of checking the cracking rupture was also given.
用非线性弹性增量理论解释了变形和应力的关系并说明验算裂缝的方法。
The sta- tic relation between stress and strain of two kinds of foamed plastics material made in China are measured. The nonlinear elastic models of foamed …
还实际测试了两种国产泡沫塑料材料的静态应力应变关系，根据上述原则和实测数据建立了泡沫塑料包装衬垫的非线性弹性模型并拟合了模型参数。
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