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前言关于球壳错边和角变形附加应力的计算及其控制条件,六十年代日本矢田提出其计算式以来我国相继有多家在这方面进行了研究。如浙江大学王仁东教授,兰石所李思源同志等,都取得了一定的成果。83年我们在分析各家公式的基础上,通过做模拟球罐角变形的设计、宽板实验,最后运用“球与板”对比法则推出适合球特点的角变形、错边最大附加应力计算式,并发表在我院83年第四期学报上。该公式用工业球和光弹球数据验证吻合很好,比矢田公式的误差小,并具有简单使用方便的特点。这个“规定”就是依我们推出的公式和相关理论为基础编制的,详见下文。
Preface On the calculation of the additional stress of the spherical shell and the angular deformation and the control conditions, since the Japanese Yen Tian put forward its formula in the 1960s, many of our country have conducted research in this respect. Such as Professor Wang Ren-Dong from Zhejiang University and Comrade Li Siyuan from Lan Shi, all achieved certain results. Based on the analysis of each formula, we made the design of the deformation of the spherical tank cantilever and the experiment of wide plate in the year of 83. Finally, we deduced the formulas of the angular deformation and the maximum additional stress of the wrong side according to the comparison rule of “ball and plate” , And published in our hospital in 83 fourth issue of journals. The formula uses industrial ball and photoelastic ball data to verify good agreement, the error than the Yada formula is small, and has the characteristics of simple and easy to use. This “rule” is based on the formula we introduced and the related theory as the basis for the preparation, see below.