塑性变形

词组短语

plastic deformation

与塑性变形相关的网络例句 [注：此内容来源于网络，仅供参考]

The results showed that plastic deformation at both -70℃ and 180℃ made the dislocation density of AISI304 stainless steel increase with the increase of deformation. Martensite phase transformation was induced for deformation at -70℃, whereas it was not at 180℃. As the dislocation density increased, the breakdown potential of AISI304 stainless steel's passive film became a little more positive. As martensite phase content increased, it became more negative and pitting corrosion resistance decreased.

结果表明：加热180℃和低温-70℃条件下塑性变形均使AISI304不锈钢中位错密度随变形量增大而增加，AISI304不锈钢在-70℃条件下塑性变形时部分奥氏体相转变为马氏体相，而在180℃条件下塑性变形时不发生马氏体相变；位错密度的增加使AISI304不锈钢钝化膜的击穿电位略微正移，而马氏体相的增加使击穿电位呈负移趋势，材料耐孔蚀性能降低。

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

To establish the constitutive equation of material, the metric tensor for stress , strain and their transformation equations between different configurations are derived, and basic theory of finite deformation as well as elasto-plastic deformation criterion are studied. By analyzing the applicability of different element models, four-node quadrilateral degenerated Mindlin isoparametric element is adopted because of its good versatility, and the element stiffness matrix is derived. The static implicit elasto-plastic finite element equation for complex skin stretch-forming is put forward based on Updated Langrange formulation.

本文首先系统地阐述了有限变形的相关基本理论，针对板料成形建立了应力应变度量张量及其相应的转换关系；介绍了材料的屈服准则、塑性变形强化规律、塑性流动规律以及加、卸载准则，并在此基础上建立了有限变形各向异性弹塑性本构方程；对板料成形的单元模型进行了分析，针对飞机蒙皮零件特点，采用通用性强的四节点四边形退化Mindlin等参壳单元进行成形模拟，并导出其单元刚度矩阵的具体形式；基于以上研究，以逐级更新Langrange描述的持续虚功率原理为基础，建立了率形式的复杂蒙皮拉形过程静态隐式弹塑性有限元方程。

A continuum model was established by introducing Newton stress formula into the elastic-plastic model to describe the deformation behavior of material in bonding zone. Based on the model, the mechanism of plastic deformation and the influence of detonation velocity on plastic deformation were analyzed and compared with experiments.

该文引入牛顿应力公式到弹塑性模型，以近似描述结合区材料行为，建立了连续介质模型，对波状结合区的塑性变形及爆轰速度对塑性变形的影响进行计算分析，并与试验结果对比。

Secondly, the effects of the rotation of principal stress axes on plastic deformation is investigated and deformation patterns are obtained through calculation.

应用本文弹塑性模型，对主应力轴旋转所引起的塑性变形进行理论探讨，分析塑性变形的规律以指导工程实践。

A "successive integration method" was firstly applied to the calculation of the plastic strain in large deformation analysis. By this method, it is easily to distinguish different resolved shear stresses and shear strain rate in different slip systems.

将"连续积分方法"首次应用到大变形弹塑性有限元分析中，使得晶体塑性模型能够区分出不同滑移系上分解剪切应力及相应产生的剪切应变，更好地反映金属材料塑性变形的微观特性。

A non-consumable rotating tool with a truncated cone pin was used in the friction stir processing.

Zr_(55)Al_(10)Ni_5Cu_(30)在玻璃转变温度以下塑性变形能力较差，在过冷液相区内具有极好的塑性变形能力，变形抗力低且比较稳定，变形量大。

In the second part, the theory of numerical simulation is introduced, including description of body configuration, elastic-plastic large deformation constitutive equation and finite element formula. It is followed by the derivation of equation from the basic theory of elastic-plastic deformation. The solution to temperature field, thermal stress, thermal strain, equivalent effective stress and equivalent strain is achieved then. In addition, we exposit the relation between machine load and thermal load in coupling analysis.

介绍了物体的构形及其描述，弹塑性大变形的本构方程、有限元列式；并进一步论述了弹塑性变形的基本理论，推导了弹塑性方程组；阐述了温度场的求解、热应力及热应变的理论概要，说明了等效应力与等效应变，并进一步阐明了在热力耦合分析中，机械负荷与温度负荷之间的关系；此外，还简介了Marc AutoForge程序结构的特点。

The shaping course of Fine blanking is very complex. Material forms a local plastic cutting area between punch and bottom die, and brings violent plastic flow under the effect of press stress. The grad of stress and strain is great, and it is an unstable transmutation process that came through an elastic distortion, plastic distortion and cut rupture.

精冲成形过程非常复杂，材料在狭窄的凸、凹模间隙附近形成了局部塑性剪切带，在压应力的作用下产生强烈的塑性流动，应力应变梯度很大，是一个经历弹性变形、塑性变形和剪切断裂的非稳态大变形过程。

The forming process and the characteristics of plastic deformation, the sites of the heavily strained zones with severe thickness reduction and their evolution, the influences of the main processing parameters, such as the plastic melt pressure and its distribution from the gate to the end of the mold, and of friction coefficient between the sheet flange and the mold, on these during the hybrid forming of the aluminum sheet have been revealed by the updated Lagrange finite element formulation for the finite elastic-plastic deformation.

运用弹塑性大变形更新的Lagrange有限元方法，揭示了铝薄板的成形过程和塑性变形的特点与规律、大塑性变形区的产生位置及其塑性变形特点，探明了复合成型过程中塑料熔体压力及其分布规律以及铝薄板凸缘与模具摩擦系数等主要工艺参数对铝薄板成形过程和塑性变形的影响规律。

与塑性变形相关的网络解释 [注：此内容来源于网络，仅供参考]

plastic deformation：塑性变形

塑性变形(plastic deformation). 当受到外力,如机械或温度应力时,它会发生不可逆变的塑性变形. 通常是从晶体结合的一些平行平面开始,它可能在全部或局部(点内)进行,看应力水平、应变率、温度和材料特性而定. 连续的或周期性的塑性变形最终导致焊点断裂.

plastic deformation：地基应力和变形塑性变形

地基应力和变形瞬时沉降immediate settlement | 地基应力和变形塑性变形plastic deformation | 地基应力和变形谈弹性变形elastic deformation

elastic plastic deformation：弹塑性变形

elastic 弹性的 | elastic-plastic deformation 弹塑性变形 | elastic-viscous flow 弹粘性流

elasto plastic deformation：弹塑性变形

elasticity 弹性 | elasto plastic deformation 弹塑性变形 | elastodynamics 弹性力学

Plastic deformation S：塑性变形

Planetary involute gear drive with small teeth difference J渐开线少齿差行星齿轮传动 | Plastic deformation S塑性变形 | Point of contact S瞬时接触点(接触点)

severe plastic deformation：强塑性变形

简介:等通道转角挤压(ECAE,Equal Channel Angular Extrusion)是一种强塑性变形(Severe Plastic Deformation)加工技术,可细化合金组织,改善材料性能. 针对传统的等通道转角挤压法难以对过长的材料进行加工的缺点,基于新近提出的间接ECAD方法的理念,

severe plastic deformation：大塑性变形

慢性重型肝炎:Chronic severe viral hepatitis | 大塑性变形:severe plastic deformation | 学校管理:To rule with severe laws

severe plastic deformation：强烈塑性变形

剧烈塑性变形:Severe plastic deformation | 强烈塑性变形:Severe plastic deformation | 重度子痫前期:severe pre-eclampsia

severe plastic deformation：剧烈塑性变形

抗原提呈:Nonobese diabetes/severe combined immunodeficiency disease | 剧烈塑性变形:Severe plastic deformation | 强烈塑性变形:Severe plastic deformation

plastically deforming area：塑性变形区

plastic-type explosive 塑性炸药 | plastically deforming area 塑性变形区 | plasticine model 油泥模型