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- COMPARING THE RESULTs OF STRAIN HARDENING EXPONENT, PLASTIC STRAIN RATIO VALUE AND ELONGATION BY TWO DIFFERENT METHODS 两种方法测定冷轧薄板应变硬化指数、塑性应变比值和伸长率的结果比较
- plastic strain hardening 应变硬化
- This type of damage partly eliminates the strain hardening effect,reduces the effective loadlng area of specimens and accelerates the beglnning of plastic instability. 这些微观损伤起到部分抵消形变强化效应的作用,并导致试样有效承载截面减小,从而对塑性失稳的开始起到促进作用。
- LCF life could be well expressed by plastic strain energy. 低周被劳寿命可由塑性应变能表达。
- When it accumulated to a higher degree, the specimen began to shear and dilate after a short time of strain hardening. 达到一定程度后，岩石表现出短暂的应变硬化，岩石开始剪胀。
- 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。
- Abstract The strain hardening behaviour of five TWIP steels with different Mn content was investigated by static tensile test and metallography. 摘要 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。
- The final configuration is identical to that in (a), and the total plastic strain is six atomic spacings. 最后的排列虽与图a一样，但总的塑性应变量是6个原子距。
- The flow stress of the material changes with deformation, so called strain hardening or workhardening behavior and may be influenced by the rate of deformation. 材料的流量应力变化伴随着材料变形,这就是应变硬化或加工硬化特性而且会收到变形率的影响。
- The discussion is focused on the relation of ratcheting to the plastic modulus and accumulated plastic strain. 研究中着重讨论了循环棘轮行为与塑性模量和累积塑性应变之间的关系。
- The geometric and material nonlinearities,the linear kinematic hardening and the effect of strain hardening at corner zone by cold-forming are taken into account in the model. 分析结果表明:宽厚比和轴压比对构件滞回性能影响显著,随着宽厚比的增加,构件承载、转动以及塑性变形能力降低;
- The flow stress of the material changes with deformation, so called strain hardening or workhardening behaior and may be influenced by the rate of deformation. 材料的流量应力变化伴随着材料变形,这就是应变硬化或加工硬化特性而且会收到变形率的影响。
- It can he used to compute many appropriate scalar quantities such as temperature, displacement, effective stress and effective plastic strain. 重点研究此法在焊接的热分析中的应用，得到了有益的结论。
- Regarding the design method, pseudo strain hardening model, pseudo strain hardening performance indices and how to choose fiber, matrix and interface for UHTCC are introduced. 在材料设计方法部分，详细介绍准应变硬化模型、准应变硬化性能参数，以及材料中纤维、基体和界面各组分的选择。
- Low-fatigue properties of 3 hoop was tested.Results show that the density of cyclic plastic strain energy is relative to hoop damage. 测试了3件轮箍的低周疲劳性能。结果表明,循环疲劳塑性应变能密度能够很好地反映轮箍损伤程度。
- Nonlinear strain hardening, pressure and J3 dependent failure surface, strain softening, tensile and compressive damage and strain rate effects are accounted in the model. 模型考虑了应变硬化、压力和J3相关的失效面、软化、拉伸损伤、压缩损伤和应变率效应。
- A new kind of elasto - plastic stiffness matrix of elements is proposed in ferms of the theory of elasto - plastic strain,the finite element method and weighted factors. 介绍一种基于模糊控制的气体流速仪 ,对流速仪的工作原理 ,选用器件 ,加权因子自寻优在系统中的应用进行阐述 ,并给出几种消除干扰的方法。
- It was shown that the cumulative plastic strain depended not only on the applied cyclic stress and number of cycles,but also on the initial static deviatoric stress level. 在上海地区典型饱和软粘土不排水循环三轴试验的基础上,分析了影响软粘土塑性累积变形的主要因素:循环荷载的作用次数,初始静偏应力和循环加载动偏应力。
- A series of uniaxial ratcheting tests of T225NG alloy at room temperature were performed and the plastic strain accumulation behavior of the alloy was investigated. 对应力循环下T225NG合金的塑性累积行为进行了试验研究,提出了预测棘轮饱和应变的本构关系及描述棘轮应变演化规律的指数型演化方程。
- The traditional viewpoint of existing heating process and neglecting melting phenomena in welding results in the error of considering compressive plastic strain in welding. 由于认为焊缝存在加热过程和忽视熔化现象的存在，导致传统观点认为的焊缝存在压缩塑性应变的错误。
