Optimum Design for Shrink-fit Multi-layer Vessels under Ultrahigh Pressure Using Different Materials

作     者：YUAN Gexia LIU Hongzhao WANG Zhongrnin 

作者机构：School of Mechanical and Precision Instrument Engineering Xi＇an University of Technology Xi＇an 710048 China Mechanical and Electrical Institute Baoji University of Arts and Sciences Baoji 721007 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2010年第23卷第5期

页      面：582-589页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 083204[工学-水产品加工及贮藏工程] 

基　　金：supported by Key Scientific Research Project of Baoji University of Arts and Sciences of China (Grant No.ZK0727) Shanxi Provincial Special Foundation Project of Key Discipline Construction of China 

主　　题：multi-layer vessels Lagrange multiplier shrink-fit optimum interference maximum shear stress theory 

摘      要：Multi-layer pressure vessels are widely used in every field of high pressure *** the purpose of enhancing a vessels＇ load bearing capacity,a beneficial process like shrink-fit is usually ***,few documents on optimum design for multi-layer shrink-fit vessels made of different strength materials can be found,available data are mainly on two-layer *** this paper,an optimum design approach is developed for shrink-fit multi-layer vessels under ultrahigh pressure by using different *** shear stress theory is applied as design *** inner and outer radii of a multi-layer vessel,as well as the material of each layer,are assumed to be *** optimization mathematical model is,thereby,*** multipliers method is required to obtain the optimal design formula of wall ratio（ratio of outer to inner radii） of each layer,from which the optimum formulas of shrinkage pressure and radial interference are derived with the superposition principle *** formulas are applicable for the optimization design of all multi-layer vessels made of different materials,or same *** formulas of the limit working pressure and the contact pressure show that the optimum wall ratio of each layer and limit working pressure are only related to all selected material strength and unrelated to the position of the layer placement in the ***,shrinkage pressure is related to the position of the layer placement in the *** design of an open ended shrink-fit three-layer vessel using different materials and comparisons proved that the optimized multi-layer vessels have outstanding characteristics of small radial interference and are easier for *** the stress of each layer is distributed more evenly and appropriately,the load bearing capability and safety of vessels are ***,this design is material-saving and cost-effective,and has prospect of engineering application.