| 1. | Constitutive model for cyclic softening behavior of 45 steel under uniaxial cyclic straining 45钢单轴应变循环软化行为的本构模型 |
| 2. | A constitutive model for evaluating small to large cyclic strains of saturated sand during liquefaction process 评价饱和砂土液化过程中小应变到大应变的本构模型 |
| 3. | Tensile test and cyclic strain test of copper single crystal were performed . there are three stages in the plastic deformation 观测到铜单晶在拉伸变形过程中的三个阶段,得到了循环应力应变曲线。 |
| 4. | In order to accurately describe the strain - controlled cyclic deformation of material at high temperatures , an experimental research was carried out on the cyclic deformation of 304 stainless steel subjected to uni - axial and non - proportionally multi - axial cyclic straining at 350 and 700 摘要为了对材料的高温应变循环变形行为进行精确的本构描述,在350和700下,对304不锈钢在不同加载路径下的单轴和非比例多轴应变循环变形行为进行了实验研究。 |
| 5. | Because the kinematically - admissble cyclic strain rate field required in kninematical - type theorem of shakedown analysis is rather difficult to be constructed , shakedown analysis based on kinematcal theorem cannot be directly applied . some conditions of kinematical - type shakedown theorem are released by ksnig and then the shakedown rules respectively for alternating plasticity and incremental collapse are obtained , for the numerical method based on the upper - bound theorem is formulated 两种方法的特点是:运用一种分级循环加载方式来寻找机动许可的塑性应变率场,利用这两种机动安定准则的特点来判断结构的安定性,从而得到机动安定性分析的安定载荷。 |
| 6. | According to the double - axis experiment and the uniaxial tension experiment , shear relaxation modulus and bulk relaxation modulus are obtained . fractional exponent models [ 23 ] [ 24 ] [ 25 ] are applied to shear relaxation modulus and bulk relaxation modulus . the theory is proved by constant amplitude cyclic strain experiment 通过双轴拉压实验来确定材料的切变松弛模量,单轴拉伸实验来确定材料的体变松弛模量,对这两种模量均采用分数阶指数的形式来进行拟合,再用等应变幅循环历史的实验验证了理论,得到了较好的结果。 |