Found non-linear fatigue damage equation and fatigue failure criterion of concrete under variable amplitude load, and analyze the influence of loading sequence on total fatigue life;
建立了混凝土非线性疲劳损伤方程和变幅荷载下的疲劳破坏准则，分析了加载次序效应对总疲劳寿命的影响；
Used as a fatigue failure criterion, application of the model to the fatigue life prediction for the feeding spring of a medium calibre automatic naval gun proved to be comparatively satisfactory.
对数累积损伤模型作为—个失效判据，已在某中口径自动舰炮输弹簧的疲劳寿命预测中得到较满意的应用。
They are mainly concerned with the tensile and compressive behavior, energy absorption, dynamic impact, failure criterion and constitutive relation, creep, fatigue and fracture of these materials.
这些工作主要讨论了金属泡沫材料的拉伸、压缩、能量吸收、动态冲击、失效准则、本构关系、蠕变、疲劳和断裂等力学性能。
This paper bases on a part of the project of National Natural Science Foundation "Failure criterion of concrete under multiaxial variable-amplitude fatigue loading" (50078010) for study contents.
本文是基于国家自然科学基金项目《混凝土多轴变幅疲劳破坏准则》(50078010)中的一部分作为研究内容。
Before the search of main fatigue failure modes, this paper added the critical failure internal stress criterion, reducing the calculation of recognition algorithms for identifying failure modes.
在主要疲劳失效模式搜寻前增加了临界失效内力判据，减小了识别失效模式算法的计算量；
The threshold value of damage and maximum strain are adopted as failure criterion to reflect fatigue failure and ductile failure respectively.
针对材料不同的失效模式，分别采用损伤变量门槛值和最大应变作为失效判据。
The threshold value of damage and maximum strain are adopted as failure criterion to reflect fatigue failure and ductile failure respectively.
针对材料不同的失效模式，分别采用损伤变量门槛值和最大应变作为失效判据。
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