考虑初始形状影响的耐压球壳临界载荷简化计算公式  

Simplified calculation formula for critical load of spherical pressure shell considering the influence of initial shape

作　　者：王丹[1] 万正权[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2014年第5期557-564,共8页Journal of Ship Mechanics

摘　　要：文章研究了在载人深潜器结构中承受高压、保障潜员安全的耐压球壳。文中通过对经典理论公式的分析和合理假设,引入几何修正系数k细化了球壳临界载荷计算表达式,该几何修正系数体现了球壳本身的初始形状,如初挠度、局部不圆度及板厚减薄等因素对其的影响。并通过回归分析得到计算数据与试验值吻合较好。同时,运用该公式对钛合金球壳临界载荷进行预报,同样有较高精度。The spherical pressure shell main structure of manned submersible which is under great pressure and provides the security of human is researched. A new formula for calculating critical load of the spherical shell which bases on classic theory and considers the correction coefficient k is introduced. The influences of initial shape are shown, for example, initial deflections and out-of-roundness and thickness thinning in the manufactory technical, etc. The calculated data agree well with the experimental data by the regression analysis. The critical load of titanium spherical shell predicted by this formula is very precisely.

关 键 词：耐压球壳 临界载荷 载人潜水器 初挠度 

分 类 号：U661.4[交通运输工程—船舶及航道工程]