Studying rigidity of the welded liner - composite shell construction

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Egorov, Anton V^1

Spacecraft and Launch Vehicles Department, Bauman Moscow State Technical University, 5 Second Baumanskaya Street, Moscow

105005, Russia^1

关键词: Base material;    Circumferential welds;    Composite shell;    Dynamic formulation;    High pressure;    Mechanical behaviour;    Metal composites;    Nonlinear formulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/2/022030/pdf
DOI  :  10.1088/1757-899X/537/2/022030

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The mechanical behaviour of an aluminium welded liner in a cylindrical metal composite vessel of high pressure made by winding on a linear carbon-filled plastic tape with tension is investigated. The resulting pressure of the wound composite shell on the welded liner is simulated by cooling the shell. It is believed that the weld is obtained by friction welding and has characteristics that are reduced in relation to the base material of the liner. The problem is solved in a geometrically and physically nonlinear formulation using a 3D solid element model, taking into account technological deviations and in real (current) time. The calculations were performed in the LS-DYNA software package in a dynamic formulation. It is shown that liner delamination from the sheath starts from the side of the circumferential weld in the area of technological deviations.