超高压组合缸体自增强工艺的有限元模拟与对比研究
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摘要
以某设备的超高压组合缸体为研究对象,建立组合缸体模型。首先对传统组合缸体进行有限元分析,然后对外形相同的超高压组合缸体的两种自增强工艺进行有限元模拟和对比研究。研究表明:套装后再自增强处理在降低内缸内壁应力峰值上明显优于首先对内缸进行自增强处理。虽然套装后自增强压力超过1000 MPa,但首先对内缸自增强影响过盈套装,所以在压力源允许的情况下推荐套装后再进行自增强处理。该研究可为超高压组合缸体自增强工艺的选择和优化提供参考。
Taking the multilayer ultrahigh pressure cylinder of a certain equipment as the research object,we establish a cylinder model. Firstly,the traditional multilayer ultrahigh pressure cylinder is analyzed by the finite element method,and then two kinds of self-reinforced technologies of the same shape multilayer ultrahigh pressure cylinder are simulated and compared. The results show that the self-reinforcement after the suit is obviously better than the self-reinforced inner cylinder in reducing the stress peak of the inner wall of inner cylinder. Although the self-reinforced pressure exceeds 1000 MPa after the combination,the self-reinforcement of the inner cylinder will affect the interference set first. Therefore,if the pressure source allows,the cylinder is first packaged and then self-reinforced. This study can provide references for selection and optimization of multilayer ultrahigh pressure cylinder self-reinforced technology.
Taking the multilayer ultrahigh pressure cylinder of a certain equipment as the research object,we establish a cylinder model. Firstly,the traditional multilayer ultrahigh pressure cylinder is analyzed by the finite element method,and then two kinds of self-reinforced technologies of the same shape multilayer ultrahigh pressure cylinder are simulated and compared. The results show that the self-reinforcement after the suit is obviously better than the self-reinforced inner cylinder in reducing the stress peak of the inner wall of inner cylinder. Although the self-reinforced pressure exceeds 1000 MPa after the combination,the self-reinforcement of the inner cylinder will affect the interference set first. Therefore,if the pressure source allows,the cylinder is first packaged and then self-reinforced. This study can provide references for selection and optimization of multilayer ultrahigh pressure cylinder self-reinforced technology.
引文
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[2]张国贤.超高压加工技术[J].流体传动与控制,2017,(3):58-60.ZHANG Guoxian.High Pressure Processing Technology[J].Fluid Power Transmission and Control,2017,(3):58-60.
[3]郑小涛,轩福贞.热-机载荷下厚壁圆筒自增强压力与安全性分析[J].机械工程学报,2010,46(16):156-161.ZHENG Xiaotao,XUAN Fuzhen.Analysis of Self-reinforced Pressure and Safety of Thick-walled Cylinder Under Heatmechanical Load[J].Journal of Mechanical Engineering,2010,46(16):156-161.
[4]雷群意.超高压厚壁圆筒机械预应力自增强技术的研究与仿真[D].长沙:湖南师范大学,2016.LEI Qunyi.Research and Simulation of Prestressing Self-reinforcement Technology for Ultrahigh Pressure Thick-walled Cylinder[D].Changsha:Hunan Normal University,2016.
[5]周思柱,廖建敏,李宁.单裂纹对自增强厚壁筒的影响研究[J].科学技术与工程,2015,15(15):1-6.ZHOU Sizhu,LIAO Jianmin,LI Ning.Influence of Single Crack on Self-reinforced Thick-walled tube[J].Science Technology and Engineering,2015,15(15):1-6.
[6]曹雪叶,赵均海,张常光.基于三剪统一强度准则的厚壁圆筒自增强分析[J].中国机械工程,2017,28(1):75-81.CAO Xueye,ZHAO Junhai,ZHANG Changguang.Analysis of Thick-walled Cylinder Self-reinforcement Based on Triple Shear Unified Strength Criterion[J].China Mechanical Engineering,2017,28(1):75-81.
[7]朱瑞林,朱国林.热预应力自增强厚壁圆筒研究[J].机械工程学报,2016,52(17):168-175.ZHU Ruilin,ZHU Guolin.Study on Thermal Prestress Selfexpanding Thick-walled Cylinder[J].Chinese Journal of Mechanical Engineering,2016,52(17):168-175.
[8]BRUNNET H,BAHRE D.Full Exploitation of Lightweight Design Potentials by Generating Pronounced Compressive Residual Stress Fields with Hydraulic Autofrettage[J].Advanced Materials Research,2014,(907):17-27.
[9]王琦,张付英,姜向敏.基于ANSYS的Y形橡胶密封圈密封性能研究[J].液压与气动,2017,(6):55-59.WANG Qi,ZHANG Fuying,JIANG Xiangmin.Research on the Sealing Performance of Y-shaped Rubber Ring Based on ANSYS[J].Chinese Hydraulics&Pneumatics,2017,(6):55-59.
[10]张杰,万化云,李宗靖.基于ANSYS的可调行程液压缸的活塞杆有限元分析及优化[J].液压与气动,2016,(3):58-61.ZHANG Jie,WAN Huayun,LI Zongjing.Finite Element Analysis and Optimization of the Piston Rod of Adjustable Stroke Hydraulic Cylinder Based on ANSYS[J].Chinese Hydraulics&Pneumatics,2016,(3):58-61.
[11]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007:443.WANG Xinmin.Numerical Analysis of the Structure of ANSYS[M].Beijing:China Communications Press,2007:443.