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首页> 外文期刊>Finite Elements in Analysis and Design >Orthogonal micro-cutting modeling of the Ti17 titanium alloy using the crystal plasticity theory
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Orthogonal micro-cutting modeling of the Ti17 titanium alloy using the crystal plasticity theory

机译：基于晶体塑性理论的Ti17钛合金的正交显微切割建模

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摘要

The development of computation means has allowed the simulation of complex mechanical problems. The first simulations of manufacturing processes at the microstructure scale, namely in the field of machining, have recently emerged. In this study, and on the basis of previous research, a novel approach to machining simulation is proposed. A crystal plasticity behavior law has thus been implemented and its parameters have been identified, for each of the two phases constituting the material. This is achieved through experimental tests conducted under extreme conditions of temperature and strain rates. Numerical models are composed of grains in the form of Voronoi cells. Random crystal orientations have also been assigned to each grain. This has subsequently allowed the simulation of the machining process. Access to local physical parameters such as crystal orientations, their evolution and phase transition thus presents a major breakthrough in this field.
机译：计算手段的发展已经允许模拟复杂的机械问题。最近出现了在微观结构规模上（即在机械加工领域）的制造过程的第一个模拟。在这项研究中，在先前研究的基础上，提出了一种新颖的加工仿真方法。因此，对于构成材料的两个相中的每个相，都执行了晶体可塑性行为定律，并确定了其参数。这是通过在极端温度和应变率条件下进行的实验测试来实现的。数值模型由Voronoi细胞形式的晶粒组成。还为每个晶粒分配了随机的晶体取向。随后，这使得可以模拟加工过程。因此，获得诸如晶体取向，其演化和相变之类的局部物理参数是该领域的重大突破。

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