deformation bands 中文意思是什麼
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The structure of the deformation bands was observed and photographed by a microscope with a camera accessory. a user material mechanical behavior ( umat ) subroutine was developed based on the crystal plasticity model, and with it, the anisotropic elasto - viscoplastic behavior in single crystals was described. slip systems " evolution was simulated by using finite element method with the subroutine
本文使用數值模擬的方法對[ 001 ] 、 [ 011 ] 、 [ 111 ]以及偏軸加載的多種取向試樣進行了拉伸試驗模擬和循環模擬，研究了不同取向的試樣在加載過程中滑移系的演化情況，並對試樣的宏觀力學行為和細觀機理進行了評述。 -
The reduced localizations can be understood by the effects that grain boundaries promote rotation of grains in shear bands, while the accommodating role of grain boundaries to deformation can be understood by restraining rotation of grains in non - shear bands. from the view of overcoming interlocking between neighboring grains, increasing grain boundaries relative thickness implied grains mutual motion more easily
結果顯示：晶界通過促進剪切帶晶粒轉動而使局部變形不均勻性降低，而通過抑制非剪切帶晶粒轉動使晶界協調變形的作用增大；從克服晶粒互鎖角度看，增大晶界相對厚度使晶粒相對運動更容易。 -
When intergranular damaged elements reached a certain numbers, the behavior of the corresponding representative elements will be softened. intergranular failure path accelerates localized plastic deformation along some shear bands and alleviates others
從數值結果發現，沿晶損傷單元達到一定數目，材料代表性單元的整體行為才呈現軟化，沿晶破壞加速某些方向而減小另一些方向變形局部化發展。
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