MESH STRESS AND FATIGUE LIFE STUDY OF WALKING MECHANISM OF SHEARER UNDER PRACTICAL WORKING CONDITIONS

CHEN HongYue; JIAO SiWei; ZHANG Kun; MAO Jun

doi:10.16579/j.issn.1001.9669.2018.06.030

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MESH STRESS AND FATIGUE LIFE STUDY OF WALKING MECHANISM OF SHEARER UNDER PRACTICAL WORKING CONDITIONS

更新时间：2022-09-22

- MESH STRESS AND FATIGUE LIFE STUDY OF WALKING MECHANISM OF SHEARER UNDER PRACTICAL WORKING CONDITIONS
- Journal of Mechanical Strength Vol. 40, Issue 6, Pages: 1456-1462(2018)
- 作者机构：
  
  1. 辽宁工程技术大学机械工程学院
  2. 煤炭工业协会高端综采成套装备动力学测试与大数据分析中心
  3. 矿山液压技术与装备国家工程研究中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.06.030
  CLC：
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CHEN HongYue, JIAO SiWei, ZHANG Kun, et al. MESH STRESS AND FATIGUE LIFE STUDY OF WALKING MECHANISM OF SHEARER UNDER PRACTICAL WORKING CONDITIONS. [J]. 40(6):1456-1462(2018)
DOI：

CHEN HongYue, JIAO SiWei, ZHANG Kun, et al. MESH STRESS AND FATIGUE LIFE STUDY OF WALKING MECHANISM OF SHEARER UNDER PRACTICAL WORKING CONDITIONS. [J]. 40(6):1456-1462(2018) DOI： 10.16579/j.issn.1001.9669.2018.06.030.

摘要

为了揭示采煤机行走机构在工作过程中的损伤机理,采用LS-DYNA建立采煤机行走机构动态接触模型,利用实验测得的牵引阻力和采煤机重力作为外载荷,进行瞬态动力学仿真;采用n-code GlypWorks中的Rainflow模块对危险节点最大等效应力时间历程进行雨流计数,载荷外推和叠加,采用n-code GlypWorks中Stress Life模块对行走轮与销排进行疲劳寿命计算。研究结果表明:采煤机行走机构具有良好力学性能,行走轮最小疲劳寿命约为307天,销排寿命约为323天,研究结果为行走机构结构优化提供理论依据。

Abstract

In order to reveal the damage mechanism in the working process of the traveling mechanism of shearer,establishing dynamic contact model of walking mechanism in LS-DYNA. By using the experimentally measured traction resistance and gravity of shearer as external load,transient dynamic simulation was executed.The rain flow count、load extrapolation and superposition of dangerous nodes maximum equivalent stress time history were conducted by using Rain-flow module in the n-code GlypWorks. Fatigue life of walking wheel and pin rows were calculated by using Stress Life module of n-code GlypWorks. The results show that: walking mechanism of shearer have good mechanical properties. Minimum fatigue life of walking wheel is 307 days, and minimum fatigue life of pin row is 323 days.The results provide theoretical basis for structure optimization of traveling mechanism.

关键词

采煤机行走机构啮合应力疲劳寿命

Keywords

ShearerWalking mechanismMesh stressFatigue life

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