A Deformation Mechanism for Ridge-Shaped Kink Structure in Layered Solids
A Deformation Mechanism for Ridge-Shaped Kink Structure in Layered Solids
复制标题
DOI：
10.1115/1.4030328
复制
发表时间：
2015-07-01
影响因子：
2.6
通讯作者：
Nakatani, Akihiro
中科院分区：
文献类型：
--
作者：
Lei, Xiao-Wen;Nakatani, Akihiro
研究了脊状扭结结构（rks）的变形机理，重点讨论了平面应变条件下单晶单滑移系统的扭结变形。从位移连续性的几何研究中发现，为了满足位移连续性，由初始均质结构变形形成的扭结边界必须具有对称性。我们提出了一个简单的RSKS变形模式模型，以实现从平行于滑移方向的压缩力产生的塑性变形。首先，分析阐述了与RSKS形成机制相关的重要几何知识。然后，对弹簧-质量模型进行了仿真，阐明了RSKS的形成机理。研究发现，角相关力场的强度对变形模式有影响。
A deformation mechanism for ridge-shaped kink structure (RSKS), a type of localized deformation, is studied with a discussion focusing on the kink deformation of a monocrystal with a single-slip system under a plane-strain condition. From a geometrical study of displacement continuity it is found that, to satisfy displacement continuity, the kink boundary formed by the deformation from an initially homogeneous structure must have symmetry. We propose a simple model of the RSKS deformation mode to accomplish plastic deformation from a compressive force parallel to the slip direction. First, important geometrical knowledge related to the RSKS formation mechanism is formulated analytically. Then, a simulation of a spring-mass model is performed to clarify the RSKS formation mechanism. The intensity of the angle-dependent force field is found to affect the deformation mode.