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Postbuckling of non-linear viscoelastic imperfect laminated plates Part I: material considerations

机译：非线性粘弹性不完善层压板的后屈曲第一部分：材料方面的考虑

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摘要

A method of predicting the non-linear relaxation behavior from creep experiments done on non-linear viscoelastic orthotropic materials is presented. Such a method is desirable since creep experiments are those mainly performed for these materials. It is shown that for given non-linear creep properties, and creep compliance represented by the Prony series, the Schapery creep model for non-linear viscoelastic orthotropic material can be transformed into a set of first-order non-linear equations. The solution of these equations makes it possible to obtain the non-linear stress relaxation curves, from which the strain-dependent constitutive equation of any non-linear viscoelastic model can be constructed, as needed for engineering applications.
机译：提出了一种通过对非线性粘弹性正交异性材料进行蠕变实验来预测非线性松弛行为的方法。这种方法是理想的，因为蠕变实验是主要针对这些材料进行的实验。结果表明，对于给定的非线性蠕变特性和以Prony级数表示的蠕变柔量，可以将非线性粘弹性正交各向异性材料的Schapery蠕变模型转换为一组一阶非线性方程。这些方程的解法使得有可能获得非线性应力松弛曲线，根据工程应用的需要，可以从中构造出任何非线性粘弹性模型的应变相关本构方程。

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