应变硬化

A continuous strain hardening-softening model of dilatant sand named "SHSOVOD", and FLACish language of FLAC3D software were put together to perform the numerical analyses. The results of matrix-arranged anchors placed in different horizontal spacing are compared with the results of single anchors.

数值分析乃利用砂土之连续应变硬化-软化与体积膨胀模式，简称SHSOVOD模式，配合FLAC3D语言FLACish进行群锚受力行为分析，同时比对群锚在不同水平间距下的分析结果与单锚之受力行为，以了解砂土中垂直扩座地锚锚碇力受水平间距之影响。

Owing to the effect of stress hardening and Bauchinger, the mechanical properties at the intrados and extrados of the elbow are obvious different.

但由于应变硬化和鲍辛格效应的影响，使该弯头外弧和内弧力学性能存在明显差异。

A method was developed to determine the activation energy and material parameters in the hyperbolic sine constitutive equation.The activation energies determined are 570 kJ／mol and 548 kJ／mol for steel T122 in saturation stress and peak stress,respectively.The values of critical strain for dynamic recrystalli...

采用应变硬化速率—应力曲线图较精确地获得了饱和流变应力和峰值应力；用回归法确定了双曲线本构方程中的变形激活能及材料常数，确定了T122钢在饱和应力和峰值应力条件下的变形激活能分别为570和548 kJ／mol；采用力学方法直接从流变曲线确定了T122钢发生动态再结晶的临界应变量，并回归出临界应变量与Zener—Hollomon参数的关系式。

The strain hardening behaviour of five TWIP steels with different Mn content was investigated by static tensile test and metallography.

采用静态拉伸、金相组织观察方法研究了5种不同锰含量的TWIP钢的拉伸应变硬化行为。

Keywords TWIP steel;strain hardening;deformation twins

TWIP钢；应变硬化；形变孪晶

In the extensional rheometric tests, the occurrence of phenomena of "strain hardening1relied on the structure of linear long chains, and mPE didn"t show the behavior of "strain hardening", which implied that the melt strength of mPE was poor.

通过研究发现，在n1PE中混入少量LDPE，不仅能够显著降低n1PE的熔体粘度，提高其熔体粘度对剪切速率的依赖性，而且还可以有效地提高mPE的熔体强度，使mPE熔体在拉伸流动中出现显著的&应变硬化&现象。

Results of the computation under the same welding temperature field show that the longitudinal residual stresses in the weld are as high as the yield strength of the plate in the strength and TEC evenmatched joints, lower than the yield strength of the plate in the strength evenmatched and TEC undermatched joints. It also has something to do with the strain hardening exponent of the weld metal in the strength evenmatched and TEC overmatched joints.

计算结果表明：等强等胀匹配的焊缝区纵向残余拉应力水平高达母材的屈服强度，等强低胀匹配的焊缝区纵向残余应力水平低于母材屈服强度，等强高胀匹配的焊缝区纵向残余应力水平还与焊缝应变硬化指数有关。

But for the TEC overmatching, the residual stress σ〓 in the weld center is also related with the strain hardening coefficient H W of the weld metal. The residual stress σ〓 in the weld center got to the yield strength σ〓 increases little when the H'w is lower and somewhat exceeds the σ〓 when the H'w is higher.

而高胀匹配时的焊缝中心纵向残余应力σ〓还与焊缝金属应变硬化指数H〓有关，H〓较低时，焊缝中心纵向残余应力σ〓在达到焊缝金属屈服强度σ〓后不再升高；H〓较高时，焊缝中心纵向残余应力σ〓可超过焊缝金属屈服强度σ〓。

The physical meaning and several determination methods of strain hardening index and thick anisotropy index r are introduced.

介绍了应变硬化指数n值和厚向异性指r值的物理意义和几种不同的测定方法，具有一定的实践指导意义。

The function can be used to extract the yield strength and strain hardening exponent of metal materials by means of finite element analysis.

通过此无量纲函数和有限元计算，可推算金属材料的屈服强度和应变硬化指数。

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。