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中文核心期刊

高密度聚乙烯的复合应力蠕变

BIAXIAL STRESS CREEP BEHAVIOUR OF HIGH DENSITY POLYETHYLENE

  • 摘要: 本文通过实验方法确定多重积分型蠕变方程中的各个时间函数,并在认识材材料非线性粘弹特征的基础上作出合理修正,最后得到适用于单轴及复合应力条件下的蠕变方程。

     

    Abstract: A series of creep tests of HDPE in uniaxial and biaxial stress state were performed on a specially designed biaxial creep machine, a multiple integral function relationship was employed and the stress terms up to third order have been taken into acount. It is found that the corrected multiple integral representation considering the linear viscoelastic range in low stress level agrees very well with test data.

     

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