基于有限元的长管拖车气瓶瓶肩结构分析

Analysis of Shoulders Structure for Tube Trailer Gas Cylinder Based on ANSYS

为了改善长管拖车气瓶瓶肩的受力状态,尝试在长管拖车气瓶瓶肩添加一种矩形环凸形结构,运用ANSYS软件分别模拟了环凸形结构离肩距为10 mm^55 mm、长度为40 mm^130 mm、宽度为6 mm^24 mm范围内的最大位移、最大等效应力和最大轴向应力,最后与长管拖车气瓶瓶肩不添加环凸形结构的结果对比分析.结果表明:长管拖车气瓶瓶肩添加环凸形结构可以改善气瓶的受力状态,减小最大位移大约3.3%,最大等效应力大约10%,最大轴向应力大约5%,气瓶受力状态与环凸形结构位置、长度和宽度大致呈线性关系,这种设计为长管拖车气瓶的优化设计提供了参考.

To improve the stress state of tube trailer gas cylinder, we added a kind of rectangular ring convex structure on the shoulders of tube trailer gas cylinder and used ANSYS software to simulate respectively the max- imum displacement, maximum von Mises stress and maximum axial stress, for the ring convex structure at shoulder distance of 10 mm-55 mm, length of 40 mm-130 mm, and width of 6 mm-24 mm. Finally we compar- atively analyzed the results with that without ring convex structure. The study shows that adding ring convex structure can improve the stress states and decrease maximum displacement about 3.3%, maximum yon Mises stress about 10% and maximum axial about 5%, and the linear relationship between stress state of gas cylinder and position, length and width of ring convex structure is also demonstrated. This design provides a reference for optimum designing of tube trailer gas cylinder.