大型金属挤压机卸荷过程插装阀流固耦合分析  

The Fluid and Solid Interaction Analysis in the Process of Huge Metal Extruding Machine

作　　者：孙康[1,2] 陈闻[1,2] 

机构地区：[1]江西理工大学应用科学学院,江西赣州341000 [2]浙江大学流体传动与控制国家重点实验室,浙江杭州310007

出　　处：《郑州大学学报（工学版）》2012年第2期91-94,102,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家重大科技专项项目(2009ZX04005-031);浙江大学流体动力与机电系统国家重点实验室开放基金项目(GZKF-201023);江西省教育厅科技计划项目(GJJ1146)

摘　　要：应用动力学分析软件ANSYS/LS-DYNA建立了大型金属挤压机卸荷插装阀FSI模型,从理论上研究了流固耦合单元算法及控制状态方程,并通过流固耦合仿真分析,得出了插装阀瞬态力学特性及卸荷过程中流体与插装阀阀芯相互作用下的冲击特性.研究结果表明:卸荷过程的平稳与阀芯阀套端盖接触时间有关,油液挤压时间最好不要超过0.04 s,平稳的卸荷过程中油液对阀芯的冲击力峰值为140kN,阀套最大Von Mises应力为456 MPa.The dynamics analysis software ANSYS/LS-DYNA is applied to establish the FSI（fluid and solid interaction） model of unloading cartridge valve in a huge metal extruding machine in this paper.Through studying algorithm and control state equation of the fluid-solid coupling unit and the simulation analysis of fluid-solid coupling,this paper studied the transient mechanical characteristics of cartridge valve and the impact characteristics under the interaction of the valve core in unloading process.The results show that： the stability of unloading process is related to the contacting time between valve core and valve set,the oil squeezing time had better not exceed 0.01 second,the peak impact force of oil to valve core is 140 KN in a steady unloading process,and the maximum Von Mises stress between valve core and valve set is 456 Mpa.

关 键 词：挤压机卸荷 流固耦合 力学特性分析 

分 类 号：TH137[机械工程—机械制造及自动化] TB122[理学—工程力学]