加载

The varying behavior of the stress response values for tension and torsion was measured under proportional and nonproportional loading.

在多轴循环加载条件下，由于存在多向应力或应变，与单轴情况相比较，其循环特性会发生变化［3］。

Keywords: metal material; nonproportional cyclic loading; Ratchetting

中文关键词：金属材料；非比例循环加载；棘轮行为

Various proportional and nonproportional tension-torsion fatigue tests are conducted on aeronautical material-LY12CZ aluminum alloy.

对航空材料LY12CZ进行了多种比例和非比例拉扭双轴加载下的疲劳试验。

Solder Alloy, Time-dependent Deformation, Nonproportional loading, Damage, Fatigue Failure Model

钎料合金，时相关变形，非比例加载，损伤，疲劳失效模型

The ratchetting experiments of 316L and 1Cr18Ni9Ti stainless steel cyclically loaded under proportional and nonproportional conditions were performed respectively.

通过对两种不锈钢材料分别进行比例和非比例应力循环加载棘轮效应试验，揭示了两种不锈钢材料的棘轮效应的一些特征，和导致这些棘轮效应特征的原因，得到了一些有意义的结果，为建立能较为精确地描述结构在多轴应力循环下的累积变形的本构模型提供了一定的实验及理论分析依

The model can satisfactorily simulate the cyclic deformation and fatigue failure behavior under different nonproportional loading paths, and the model also can predict the multiaxial fatigue life well.

应用模型能较好地模拟材料在不同非比例加载路径下的循环变形行为及疲劳失效行为，并能较准确地预测多轴疲劳寿命。

Third, the stress-strain and damage parameters on multiaxial fatigue damage critical planes were analyzed. A new multiaxial fatigue damage parameter was presented. This parameter can not only describe multiaxial proportional and nonproportional loading, but also uniaxial loading.

第三，对多轴疲劳损伤临界面上的应力应变及损伤参量进行了分析，在此基础上提出了一种新的多轴疲劳损伤控制参量，该参量不仅能够描述多轴比例与非比例加载下的疲劳损伤，而且可以退化成单轴的形式。

The hardening of the steel mayrelate to the shape of strain path under nonproportional cyclic straining. Experimental resultsshow that there exists a coupling between the hardening/softening induced by strainamplitude and that by the strain path.

在非比例循环加载条件下，材料的强化与路径形状密切相关实验表明，应变的幅值和路径方向的变化所造成的强化间存在耦合。

The biaxial nonproportional cyclic strap testsfor circular and rhombic strain paths, and the cyclic cachetting tests for four nonpmportinnalcyclic paths with mean stresses were conducted.

开展了圆形和菱形应变路径的双轴非比例循环加载试验；并进行了4种具有平均应力的非比例循环路径的循环棘轮试验。

In this paper, detailed experiment was conducted on a model of cable dome with diameter of 4.8m, and the behaviors of model in the form finding process and subjected to nonsymmetrical loads are investigated.

本文通过对一直径为4.8m的Levy型索穹顶模型的成形与加载试验研究，得到了在成形过程中和不对称荷载作用下结构的内力和变形规律。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。