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| 1 | 铜单晶拉伸试样表面滑移带痕迹的晶体塑性分析显示文摘采用建立在晶体塑性理论基础上的晶体塑性有限变形计算方法,针对铜单晶试样单轴拉伸过程中晶体滑移在试样表面留下的滑移带痕迹进行了数值研究.作者利用三维有限元模拟不同取向铜单晶试样的拉伸变形,通过晶体塑性滑移面与试样表面交线的几何分析,得到了试样在不同晶向拉伸下不同滑移系启动造成的试样表面滑移痕迹,并对数值计算的试样表面滑移痕迹作了初步讨论.所得结果表明晶体塑性理论能够用于单晶试样拉伸试验的表面滑移带痕迹形成的分析. | 石艳柯 张克实 | 2011 | 固体力学学报2011，32，6： | 5 |
| 2 | 考虑尺寸效应的多晶金属循环塑性分析显示文摘采用多晶塑性分析方法,设材料单元包含一定数量的各向异性单晶晶粒并考虑晶粒尺寸的影响,利用Taylor假设计算材料单元的应力和应变.模型引入考虑尺寸效应的晶体滑移硬化函数,同时针对晶体滑移引入背应力及其方向性硬化的描述,以反映不同晶粒尺寸材料在循环加载条件下的力学行为.利用该模型,论文第一作者采用显式格式编制了与ABAQUS商用有限元软件接口的用户材料子程序(VUMAT),实例计算证实该模型可以反映和描述多晶金属材料在反复加载条件下的循环塑性行为与尺寸效应. | 张静 张克实 许凌波 | 2012 | 固体力学学报2012，33，3： | 4 |
| 3 | CONSTITUTIVE MODELING OF ROLLED SHAPE MEMORY ALLOY SHEETS TAKING INTO ACCOUNT PRE-TEXTURE AND ANISOTROPIC HARDENING显示文摘The drawing or rolling process endows polycrystal shape memory alloy with a crystallographic texture, which can result in macroscopic anisotropy. The main purpose of this work is to develop a constitutive model to predict the thermomechanical behavior of shape memory alloy sheets, which accounts for the crystallographic texture. The total macroscopic strain is decomposed into elastic strain and macro-transformation strain under isothermal condition. Considering the transformation strain in local grains and the orientation distribution function of crystallographic texture, the macro-transformation strain and the effective elastic modulus of textured polycrystal shape memory alloy are developed by using tensor expressions. The kinetic equation is established to calculate the volume fraction of the martensite transformation under given stress. Furthermore, the Hill's quadratic model is developed for anisotropic transformation hardening of textured SMA sheets. All the calculation results are in good agreement with experimental data, which show that the present model can accurately describe the macro-anisotropic behaviors of textured shape memory alloy sheets. | Yuping Zhu Yuanbing Wang Guansuo Dui | 2014 | Acta Mechanica Solida Sinica2014，27，2： | 1 |
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