文档介绍：提要丫多;G' 0多S 本文以液化石油气钢瓶为研究对象,从理论和试验上探讨分析了钢瓶容积膨胀率的计算及主要影响因素。通过计算说明了钢瓶容积膨胀对钢瓶安全的意义; 从理论上分析计算了钢瓶在弹性状态下的容积膨胀率,分析了边界效应对筒体与封头应力应变的影响,利用弹塑性理论计算了筒壳、球壳及标准椭球壳失稳时的容积膨胀率,确定了钢瓶爆破时与试验结果符合较好的容积膨胀率变动的范围; 探讨了影响钢瓶容积膨胀率的材料性能、结构形状、工艺等主要因素,考虑到边界效应、冲压工艺的限制以及经济性等,提出了长径比的合适值;最后提出了一些保证钢瓶爆破时有足够容积膨胀率的建议。关键词:液化石油气钢瓶满液容积膨胀率边界效应长径比 Abstract This thesis has made a study of the Volume Expansion Ratio少ER) of the steel liquified petroleum gases cylinder . It has analysised and discussed the primary factors which affect the VER of the steel liquified petroleum gases cylinder theoretically and significiance for the VER of the steel cylinder to the steel cylinder safety is exposed by an elastic and plastic theory,the elastic VER of the steel cylinder、the VER of the cylinder shell and the VER of the sphere shell and the VER of the standard ellipsoid shell just before them unstabilized are discussed and the same time the stress and strain change of the steel cylinder affected by the Boundary effect are VER of the steel cylinder are estimated at the time it limit of the VER of the steel cylinder which accords well with the experiment is the quality of the material,the structure and the technology cf production,this thesis has discussed the primary factors which affect he VER of the steel the Boundary effect、the limit of the punch technology and the economic,the proper value of the Length Diameter Ratio is last it makes some suggestions which can ensure that the steel cylider has enou沙VER Key Word the steel liquified petroleum gases cylinder Pull hold the Volume Expansion Ratio Boundary effect the Length Diameter Ratio 序言液化石油气钢瓶是小型民用移动式压力容器,因液化石油气干净卫生,燃烧热值高,使得液化石油气钢瓶进人了千家万户。据统计,截至19%年底,全国在用气瓶已达5500多万只,其中液化石油气钢瓶数量最多,为4646多万