• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2017, Vol. 53 ›› Issue (1): 121-129.doi: 10.3901/JME.2017.01.121

• 机械动力学 • 上一篇    下一篇

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钢丝绳弹塑性损伤本构模型研究*

任志乾, 于宗乐, 陈循   

  1. 国防科技大学装备综合保障技术重点实验室 长沙 410073
  • 出版日期:2017-01-05 发布日期:2017-01-05
  • 作者简介:任志乾,男,1977年出生,博士研究生。主要研究方向为可靠性试验与评估。E-mail:rzq_rtl@nudt.edu.cn
  • 基金资助:
    * 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); 20160128收到初稿,20160906收到修改稿;

Study on Wire Rope Elastic-plastic Damage Constitutive Model

REN Zhiqian, YU Zongyue, CHEN Xun   

  1. Science and Technology on Integrated Logistics Support Laboratory, National University of Defense Technology, Changsha 410073
  • Online:2017-01-05 Published:2017-01-05

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。

关键词: 冲击载荷, 弹塑性分析, 单股钢丝绳

Abstract: 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.

 

Key words: elastic-plastic analysis, impact load, wire rope with single strand