FATIGUE LIFE OF WELDED ROADHEADER DRIVE DEPARTMENT UNDER DIFFERENT CROSS SECTIONAL

MAO Jun; YANG XinWei; CHEN HongYue

doi:10.16579/j.issn.1001.9669.2017.04.029

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FATIGUE LIFE OF WELDED ROADHEADER DRIVE DEPARTMENT UNDER DIFFERENT CROSS SECTIONAL

更新时间：2022-09-22

- FATIGUE LIFE OF WELDED ROADHEADER DRIVE DEPARTMENT UNDER DIFFERENT CROSS SECTIONAL
- Journal of Mechanical Strength Vol. 39, Issue 4, Pages: 909-914(2017)
- 作者机构：
  
  1. 辽宁工程技术大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.04.029
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MAO Jun, YANG XinWei, CHEN HongYue. FATIGUE LIFE OF WELDED ROADHEADER DRIVE DEPARTMENT UNDER DIFFERENT CROSS SECTIONAL. [J]. 39(4):909-914(2017)
DOI：

MAO Jun, YANG XinWei, CHEN HongYue. FATIGUE LIFE OF WELDED ROADHEADER DRIVE DEPARTMENT UNDER DIFFERENT CROSS SECTIONAL. [J]. 39(4):909-914(2017) DOI： 10.16579/j.issn.1001.9669.2017.04.029.

摘要

针对掘进机横截工况下履带架驱动处焊接残余应力对疲劳断裂的影响,建立了掘进机横截时系统的力学模型,采用Matlab汇编语言计算出不同横截角下履带架所受侧向力;应用有限元方法,模拟了履带架驱动处焊接残余应力的分布规律。基于以上分析,并结合等效结构应力法对不同横截角下驱动处疲劳寿命进行了分析比较。结果表明当横截角为5°时,履带架所受侧向载荷最小,驱动处焊缝的疲劳寿命最大。

Abstract

According to the effect of welding residual stress on fatigue fracture in crawler frame drive department when roadheader cross sectional,mechanical model of roadheader cross sectional was established,using MATLAB language calculate the different cross sectional angles of lateral force on the crawler frame;distribution law of welding residual stress of crawler frame drive department was analyzed by using finite element method.Based on the above analysis,and equivalent stresses under different cross-sectional angles on driver fatigue life analysis.The results show that the minimum lateral loads on the crawler frame and drive department weld fatigue life the greatest when the cross sectional angles of 5°.

关键词

残余应力掘进机疲劳寿命FE-SAFE

Keywords

Residual stressRoadheaderFatigue lifeFE-SAFE

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