超应变

The results demonstrated that with the increase of twisting velocity, the torque on the hollow structure changes indistinctively. In case of increasing die velocity and target strain rate, the forming force of hot forming and gas pressure of superplastic forming will increase.

研究表明，扭转速度的提高使扭矩仅有较小的变化；当模具速度和应变速率提高时，热成形的成形力和超塑性成形的气压将提高。

A problem of cable force optimization of cable-stayed bridge is equated as a nonlinear implicit optimization model. In the mathematical model, the object function is minimizing summation of bending strain energy and axial strain energy, and the constrain conditions are nonlinear and related to reasonable finished dead state. The optimization model is solved by projection gradient method, fully considering all kinds geometric nonlinearity.

把超千米级斜拉桥的索力优化问题归结为非线性隐式优化的数学模型，以系统最小弯压应变能为目标，根据合理成桥状态指定各种非线性约束条件，利用投影梯度法进行优化问题的求解，求解过程中充分考虑了各种几何非线性的影响。

Ultramicrohardness testing was employed to measure the hardness of the matrix in a hotextruded SiCp/LD2 composite for characterizing the law of distribution of thermal residual strain in the matrix.

用超显微硬度仪测试了热挤出态的SiCp/LD2复合材料中基体微区的硬度，用于表征材料基体中的热残余应变分布规律。

In this paper we did experiments on ingot Zn\|5%Al alloy,to find the effect of sandglass extrusion technology on the microstructures and properties of the test mate...

实验结果表明：沙漏挤压工艺能够有效的细化晶粒，使材料获得均匀的等轴细晶组织和优良的综合性能，并有助于实现高应变速率超塑性

In the deformation analysis, equilibrium hyperelastic constitutive equations which are obtained by our experiments are applied; In the dissipation energy analysis, dissipation energy is calculated by combining the stress-strain distributions derived from the deformation analysis and viscous dissipation characters; In the heat transfer analysis, combining temperature on tire side tested by drum test, a numerical inverse method is described for determining the heat convection boundary on tire side.

变形分析中，采用了平衡态的超弹性材料模型；损耗分析中，依据变形分析获得的应力应变场，结合材料粘性损耗特性来获得损耗能量；热传导分析中，依据实测的轮胎胎侧温度场，提出了一种基于实验的数值反演方法来确定胎侧的对流热边界条件。

The optimal curve for pressure vs. time of superplastic bulging of such parts as long trapezoid groove and truncated cone etc. is calculated based on superplastic flow equation σe=kεem and their superplastic deformation pattern.

根据超塑性流动方程和长梯形槽、圆台筒等的起塑性变形模式，计算长梯形槽、圆台筒等在合适的恒应变率条件下胀形压力随时间的变化关系。

The microstructure, phase transformation, compression property and strain recovery characteristics of equiatomic TaRu super high temperature shape memory alloy have been studied by optical microscope, XRD, DTA, compression tests and TEM observations.

作者： 高昕，郑玉峰，蔡伟，张姝，赵连城单位：哈尔滨工业大学材料科学与工程学院，黑龙江哈尔滨 150001摘要：利用光镜、XRD、DTA、压缩试验和TEM研究了等原子比TaRu超高温形状记忆合金的显微组织、相变、压缩特性和应变恢复特性。

After looking into the excess pore pressure, soil deformation, stress path as well as stress-strain relationship, the effects of the cutoff walls were identified as reducing the deformation and flow of the liquefiable soil.

同时，通过对地层中超静孔隙水压、土体变形、应力路径、应力－应变关系的分析发现，截断墙的主要作用在于抑制可液化土的变形和流动。

The results of simulation indicated that the new model can be applied toany loading condition, describe phenomena that the Terzaghi consolidation modelcan not, such as the apparent preconsolidation pressures that depend on strain rate, increment in apparent preconsolidation pressures due to creep during sustained loading, and change of porewater pres...

计算与实验结果对比表明，该模型能应用于一维条件下任何加载方式的固结模拟，能描述表观前期固结压力的应变率效应、次固结引起的表观前期固结压力增加、连续加载下超静孔隙水压的增长规律等一些已被实验广泛证实且不能被太沙基固结理论反映的现象。

Resistance stress strain curves of TiNi superelastic wire during tension and unloading in constant temperature were test. Mechanism of the mechanics property and resistance nature was analyzed.

测试了TiNi超弹丝在恒温拉伸、卸载过程中的电阻-应力-应变关系曲线，分析了力学及电阻特性的变化机理。

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。