煤炭工程 ›› 2018, Vol. 50 ›› Issue (10): 181-184.doi: 10.11799/ce201810042

• 装备技术 • 上一篇    下一篇

输送机斜撑构件可靠寿命仿真分析

初琦1,孟国营2,张春芝1,史利娟1   

  1. 1. 北京工业职业技术学院
    2. 中国矿业大学(北京)
  • 收稿日期:2017-10-16 修回日期:2018-03-08 出版日期:2018-10-20 发布日期:2018-12-18
  • 通讯作者: 初琦 E-mail:chuqimail@163.com

Simulation and Analysis of Structural Reliable Life for Inclined Strut of Conveyor

  • Received:2017-10-16 Revised:2018-03-08 Online:2018-10-20 Published:2018-12-18

摘要: 针对输送机结构特点,研究给出了输送机结构疲劳可靠寿命计算方法,能够考虑参数的随机性,分析结构可靠寿命及其灵敏度。以某输送机斜撑为对象,建立了疲劳仿真模型,利用试验设计和响应面方法,拟合斜撑疲劳寿命的响应面模型|在此基础上,考虑结构尺寸、载荷、材料性能等的随机性,基于概率功能度量进行了可靠寿命及其灵敏度分析。分析结果表明:斜撑可靠寿命较低,杆宽、凹槽宽度为关键因素。通过改变关键因素的参数,斜撑可靠寿命得到较大的提高。

关键词: 可靠寿命, 输送机, 仿真分析, 响应面模型, 斜撑

Abstract: The finite element simulation model for inclined strut of a conveyor is built by CAE tool, then the design of experiment and response surface method are introduced to fit response surface model for fatigue life of inclined strut. On this basis, considering the effect of random factors such as dimension, load and material performance etc., the reliable life prediction problem can be solved by using performance measure approach, and then the reliable life and sensitivity degree can be gotten directly. Finally, the structure of inclined strut is improved by using sensitivity degree, the reliable life of new structure is longer than before.

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