A generalized formulation of the concept of nonhardening region
A generalized formulation of the concept of nonhardening region
复制标题
非硬化区域概念的广义表述
DOI：
10.1016/s0749-6419(95)00003-8
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发表时间：
1995
影响因子：
9.8
通讯作者：
T. Yoshimaru
中科院分区：
文献类型：
--
作者：
K. Hashiguchi;T. Yoshimaru
在金属的固定应变极限之间的循环加载下实现了稳定的磁滞回线。为了描述这一现象，Chabocheet等人提出了记忆超球的概念。[1979]并由Ohno[1982]将其扩展为非硬化区的概念，假定当塑性应变空间中的超球内部存在塑性应变时，各向同性硬化不进行。本文给出了这一概念的一般公式，它涉及到各向同性运动硬化材料，不限于金属，经历了材料旋转的大变形。
A stable hysteresis loop is realized under a cyclic loading between fixed strain limits for metals. To describe this phenomenon the idea of memory hypersphere was proposed by Chabocheet al. [1979] and it has been extended by Ohno [1982] as the concept of nonhardening (strain) region, which assumes that an isotropic hardening does not proceed when a plastic strain exists inside a hypersphere in the plastic strain space. A generalized formulation for this concept is presented in this article, which concerns isotropic-kinematic hardening materials, not limited to metals, undergoing a large deformation with a material rotation.