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中文摘要：
为定量描述镍钛形状记忆合金循环相变诱发塑性导致的超弹性退化行为,在广义粘塑性框架下对Graesser模型进行了拓展,考虑了奥氏体和马氏体弹性模量的差异以及马氏体非线性硬化行为,引入循环相变过程中相变应力和残余应变的演化方程,建立了超弹性NiTi合金循环相变诱发塑性本构模型,总结了模型参数确定方法.通过镍钛形状记忆合金微管的循环相变试验结果和模拟结果的对比表明,提出的模型能够很好地预测镍钛形状记忆合金的循环相变诱发塑性行为.
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