strain softening

It shows obvious regularity that saw-toothed chips form as alternating effect of thermal softening and strain hardening, or periodic alternating cracks formation.

由于热软化、应变硬化的交替作用或周期性裂纹的产生，使得锯齿形切屑形成呈现很明显的规律性。

And it is found that the model can duplicate the transference of deformation mode from the strain softening under the low confining pressures to the strain hardening under the high confining pressures; and the brittleness index gradually reduces when the confining pressure is increased.

模拟结果表明：这一模型可以模拟低围压下的应变软化到高围压下的应变硬化现象，并且脆性指数随着围压的增大而逐渐减小。

Concrete behavior under the biaxial state of stress is represented by a nonlinear constitutive relationship, which incorporates tensile cracking at a limit stress, tension stiffening and shear retention effects for cracked concrete, and the strain-softening phenomenon beyond the maximum compressive strength.

混凝土的非线性本构关系，则考虑受拉开裂、开裂后的拉伸加强效应和剪切折减系数以及屈服后的应变软化现象。

The stress-strain curve of frozen soil under uni-axial dynamic loading behaved with strain softening, showing brittle behavior.

单轴动态加载下，冻土应力应变曲线表现为应变软化，显示出脆性材料特征。

The distributions of temperature, stress, strain, strain rate, displacement and viscous damping coefficient within ductile shear zone at different time intervals are distinguished in the cases of accelerating creep age and strain softening.

并对加速蠕变和应变软化两种情况，给出了不同时刻韧性剪切带内的温度、应力、应变、应变率、位移和粘滞系数的分布特征，描述了岩石递进变形的规律。

Experimental and theoretical study on size effect on strain softening of rock materials

岩石材料应变软化尺寸效应的实验和理论研究

Cyclic softening effect of high current multiple pulses on strain controlled low cycle fatigue of α-ti

大电流多脉冲对α-Ti低周应变循环的软化作用

In model 2, the material parameters are independent of the plastic volumetric strain but is related to the temperature change that causes thermal softening, the model is used inside the fault zone.

模型2用来模拟断层物质，其强度只同热状态有关而与塑性变形无关。

According the testing analysis, it was discovered that the typical tensile strain softening curve can be described with straight line segments defined by four key points.

试验分析表明，典型的钢纤维混凝土拉伸软化曲线，可以用具有四个关键点的直线段描述，本文结合试验数据给出各段直线参数的确定方法。

There is a fracture process zone near the crack tip for the tensile strain softening materials.

在应变软化材料的主裂缝尖端存在一断裂过渡区。