由于蠕变和应力松弛的影响，粘结层应变不可逆地增加，使TGO层的界面形貌出现起伏。
Impacted by creep and stress relaxation, the strain of bond coat layer increases irreversibly, and the TGO layer convolutes .
研究表明：河谷下切引起的岩体卸荷松弛，雨水进渗导致的岩体强度衰减是导致红层滑坡形成的主要因素。
Study shows that: incised valley of the rock mass caused by unloading relaxation, caused by rainwater infiltration rock strength degradation is the formation of red layer a major factor in landslides.
以粘弹性材料松弛型积分本构关系为基础，给出了复合材料层合板的有限元控制方程及相应的有限元分析程序。
It is based on the relaxation integral constitutive relation to give the finite element control equation and analysis program for laminated composite plates.
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