查询词典 strain hardening

Based on the experimental results and analysis, new contributions given in this paper is as follows:(1) the new approximate formula developed in ref [7] for △ε of continuous and noncontinuous strain hardening materials from tensile properties under various R.

实验与计算结果及分析讨论表明：用新提出的Δε模型和近似公式，可以估算不同应力比条件下连续应变硬化和非连续应变硬化材料切口根部的Δε，但是，超载作用后，Δε应近似按弹性应力循环计算；首次给出了铝合金板材和低合金高强度钢FCI超载效应的定量表达式。

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。

As strain-hardening effect greatened on the load-bearing polyethylene, the release of plate-like wear debris augmented and caused upward increase in an added sequence.

由两产品的测试结果比较： B 型产品磨损较多，所以释出的磨耗屑重量也明显多於 A 型产品。

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 mechanism of instability wrinkling in the process based on minimum energy principle is revealed, uniform mathematic description of the wrinkling wave on the strip of in-plane bending is established, the internal and external energy is deduced by energy method, and a uniform criteria of internal and external wrinkling is established; then how to combine the criteria with the FEM simulation system to make the numerical prediction of wrinkling into reality is also resolved in the paper. The effects of the forming parameters on the deforming result are analyzed by the uniform predict criteria. The results show as follows: as the compress width increase, external wrinkling first come into being, then internal winkling do, and finally in-plane bend occur; the loading wedge angle increase, internal winkling first come into being, thenin-plane bend do, and finally external wrinkling occur; in-plane bend is possible to occur with a increase of the strain-hardening exponent and the strength coefficient; and the effect of the friction factor may be ignored.

2揭示了板带不均匀压下面内弯曲成形过程基于能量原理的失稳起皱机理，提出了统一的描述内外缘起皱波形的函数，采用变分法推导了服从该波形函数的内外缘起皱能，建立了统一的起皱预测准则；将新建立的统一的起皱预测准则引入到数值模拟系统IBS中，数值预测结果与实验结果的吻合较好；分析了成形过程各参数对起皱的影响规律：随着接触变形区宽度的逐渐增大，先是发生外缘起皱，然后发生内缘起皱，进而才出现稳定成形；随着实际加载楔角的增大，先是发生内缘起皱，然后发生稳定成形，进而出现外缘起皱；硬化指数和强化系数增大，易于稳定成形；摩擦因子对起皱的影响不明显；而且接触变形区宽度对起皱的影响最大。

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 strain hardening coefficient n and deformation activation energy Q were evaluated by linear regression analysis.

因此，超高强铝合金的高温变形特性对制订该类合金的成形工艺具有重要的工程意义。

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。

Furthermore,the reason that why the material without any strain hardening performance cannot be used in plastic design is explained.

由于历史原因，我国在钢结构的塑性设计理论研究及工程实践方面，与这些国家相比尚存在较大的差距。

Characteristic inclusion parameters had little effect on uniform elongation, strain hardening exponent and tensile strength.

钢中的夹杂物对其均匀延伸率、形变硬化指数和拉伸强度没有影响。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。