钢丝绳弹塑性损伤本构模型研究  

Study on Wire Rope Elastic-plastic Damage Constitutive Model

作　　者：任志乾[1] 于宗乐[1] 陈循[1] 

机构地区：[1]国防科技大学装备综合保障技术重点实验室,长沙410073

出　　处：《机械工程学报》2017年第1期121-129,共9页Journal of Mechanical Engineering

基　　金：可靠性与环境工程技术国防科技重点实验室2014年开放基金资助项目(KHZS20143011)

摘　　要：通过分析钢丝绳的结构与材料特点以及主要失效形式,将材料损伤力学理论引入到钢丝绳失效模型,结合材料损伤理论,建立了含损伤的钢丝绳弹塑性损伤本构模型,推导了钢丝绳受到拉伸载荷作用时的损伤变量演化方程,编写了含损伤与不含损伤的钢丝绳弹塑性损伤有限元仿真分析程序,计算得到了钢丝绳在受到拉应力作用下的损伤演化历史,对比计算了不含损伤与含有损伤的两种本构模型的仿真计算结果,为进一步开展基于损伤力学的钢丝绳寿命与可靠性研究提供了基础。Based on the analysis of wire rope material and structure, damage mechanics is introduced in the failure model and an elastic plastic damage constitutive model of wire rope is established. The theoretical equation for the evolution of damage variables under tensile loading is derived. Wire rope elastic plastic damage finite element simulation analysis programs with damage and without damage are written. Damage evolution history of the steel wire rope under the tensile stress is calculated. Two constitutive model simulation results with damage and without damage are contrasted. This provides a basis for further development of the research on the life and reliability of wire rope based on damage mechanics.

关 键 词：单股钢丝绳 冲击载荷 弹塑性分析 

分 类 号：TH123[机械工程—机械设计及理论]