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Based on the analyses of the structural feature and the function requirements of newstylebottle cap, the two fundamental components, the lining washer and the outer body, are abstracted as aplate and a cylinder with thin wall respectively. For simulating the deformation of the lining washerunder equiaxial pressure, the modified Lagrangian finite element analysis is applied on the 228 tri-angular elements. Under assembly pressure, the plastoelastic deformation of both the lining washerand the outer body are studied in terms of Tresca’s yield criterion and the limitation of the plasticdeformation is presented when the two components are assembled into one unit. For the production ofthis kind of bottle cover, experiments are carried out by carefully measuring the changes of the di-ameter of lining washer as well as that of the outer body. It is shown that results from the experimentshave a good agreement with the theoretical calculation and the maximum value of the allowablepressure has successfully been used in the design of newly developed bottle cap production system.
Based on the analyzes of the structural feature and the function requirements of newstyle capottle, the two fundamental components, the lining washer and the outer body, are abstracted as a plate and a cylinder with thin wall respectively. For simulating the deformation of the lining washerunder equiaxial pressure, the modified Lagrangian finite element analysis is applied on the 228 tri-angular elements. Under assembly pressure, the plastoelastic deformation of both the lining washerand the outer body are studied in terms of Tresca’s yield criterion and the limitation of the plasticdeformation is presented when the two components are assembled into one unit. For the production ofthis kind of bottle cover, experiments are carried out by carefully measuring the changes of the di-ameter of lining washer as well as that of the outer body. It is shown that results from the experimentshave a good agreement with the theoretical calculation and the maximum value of the allowable pressure has s uccessfully been used in the design of newly developed bottle cap production system.