摘要
运用ProCAST软件对滑枕铸件充型、凝固结束后的残余应力场进行模拟分析,获得了滑枕铸件残余应力场分布规律。结果表明:滑枕铸件的丝杆安装面上的应力主要是压应力,主轴箱安装面上的应力主要是拉应力,其余测试面上拉、压应力同时并存,丝杆安装面和主轴箱安装面上的残余应力是滑枕产生弯曲变形的主要原因。滑枕主轴轴承安装部位为应力集中区域,其最大应力值达到195.6MPa,该部位易产生变形或开裂。通过数值模拟获得铸件残余应力的大小及分布规律,可为滑枕结构的设计与优化提供参考依据。
The residual stress in ram castings after filling and solidification was numerically simulated by ProCAST to achieve residual stress distribution rule. The results show that, the srew mounting face of ram castings is primarily compressive stress, the headstock mounting surface is mainly tensile stress and tensile and compressive stresses coexist in other test surface, and the residual stress in headstock mounting surface, screw mounting surface and installation site is the main reason for bending deformation of ram castings. Ram spindle beating installation site is the stress concentration area and the maximum stress value is 195.6 MPa, where deformation or cracking is easy to form. The value and distribution of residual stress can be obtained though the numerical simulation, it can provide a reference for the design and optimization of ram structure by testing and analysis.
出处
《铸造技术》
CAS
北大核心
2016年第12期2783-2784,共2页
Foundry Technology
基金
桂林市科学研究与技术开发计划资助项目(20140101-7)
关键词
滑枕
残余应力
数值模拟
ram
residual stress
numerical simulation
