摘要
为确定变径管液压成形中的脉动加载参数,以奥氏体304不锈钢变径管为例,利用有限元分析软件建立了仿真模型,采用液压加载速度2 MPa/s并分别以复合幅值3 MPa和5 MPa、频率1 Hz和0.5 Hz的载荷进行脉动加载,根据成形零件壁厚分布的仿真结果比较分析,发现相较其他加载情况,复合幅值5 MPa频率1 Hz成形零件最大减薄率和最大增厚率明显减少,零件壁厚分布更均匀,实际加工结果验证了上述计算机辅助设计方法的可行性。
In order to determine the pulsed loading parameters in the hydroforming of the reducer,an austenitic 304 stainless steel reducer is taken as an example.The simulation model was established by using finite element analysis(FEA)software.The hydraulic loading speed was 2 MPa/s and the amplitude 3 MPa and 5 MPa,frequency 1 Hz and 0.5 Hz were combined for loading.Based on the comparison with analysis of the simulation results of the wall thickness distribution of the formed parts,it was found that the maximum thinning rate and the maximum thickening rate of the composite parts were 5 MPa and 1 Hz respectively.The distribution of wall thickness is more uniform.The result of the actual machining proves the feasibility of the above computer aided design(CAD)method.
作者
周宇庭
樊春霞
尚振东
ZHOU Yuting;FAN Chunxia;SHANG Zhendong(School of Machatronics Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China;No.713 Research Institute,CSIC,Zhengzhou Henan 450000,China)
出处
《机床与液压》
北大核心
2018年第17期133-136,共4页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(51505129)
关键词
管材液压成形
脉动加载
计算机仿真
有限元分析
Tube hydroforming
Pulsed loading
Computer simulation
Finite element analysis
