文章摘要
李鹏辉,符蓉,王国顺.三角形摩擦块粉末压制模拟分析[J].润滑与密封,2016,41(10):78-81
三角形摩擦块粉末压制模拟分析
Simulation Analysis of Powder Compaction Processes of Triangle Friction Blocks
  
DOI:10.3969/j.issn.0254-0150.2016.09.015
中文关键词: 摩擦块  粉末压制  MSCMarc  模拟分析
英文关键词: friction block  powder compaction  MSCMarc  simulation analysis
基金项目:大连市科学技术计划项目(2014A11GX026)
作者单位E-mail
李鹏辉 大连交通大学 lph09227@163.com 
符蓉 大连交通大学  
王国顺 大连交通大学  
摘要点击次数: 830
全文下载次数: 0
中文摘要:
      三角形摩擦块在压制过程中出现裂纹、掉角等缺陷,严重影响压坯的使用性能。采用MSCMarc软件对三角形铜基粉末冶金摩擦块的压制过程进行有限元模拟分析,研究压制方式、摩擦因数、保压时间等参数对摩擦块的应力及相对密度分布的影响。结果表明:与单向压制方式相比,双向压制制备的粉末压坯相对密度较大,密度均匀性好;摩擦因数对摩擦块相对密度和等效应力分布的影响较大,摩擦因数越小,摩擦块密度均匀性越好,等效应力越小且分布越均匀,而保压时间对摩擦块相对密度和等效应力分布的影响较小。对原压制工艺进行改进,提出较为经济实用的压制工艺方案。
英文摘要:
      Some defects easily occur in triangular brake pad during compacting,such as cracks and crush,which impacts on the properties of the green compact.Compacting process of triangular brake pad composed of copper based powder metallurgy material was simulated by MSCMarc software,and the influence of different friction conditions,dwell time and other process conditions on stress distribution and relative density of brake pad was researched.The results show that the relative density of brake pads prepared by the bidirectional pressing is higher and well distributed.The influences of friction coefficient on the relative density and the distribution of equivalent stress of the brake pad are larger,with smaller friction coefficient in the pressing process,the prepared triangular brake pad has more uniform density,smaller equivalent stress and more uniform equivalent stress distribution.While the holding time has small influence on the relative density and the distribution of equivalent stress of the brake pad.The original press process of the triangular brake pad is improved,a more economical and practical pressing process was put forward.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮