论文部分内容阅读
具有加劝环肋的圆薄板,在实际工程中常常遇到,特别在给水排水工程结构中用得最多。实际经验指出:在某些情况下,应用变截面的圆板,可以更节省用料,但是这类结构物的分析工作,却也随之变为异常复杂难解了。 本文提出,如何应用结构力学中,近年来获得新发展的一种“无剪力力矩分配法”,来分析具有加劲环肋变截面圆薄板,使带有几个加肋的变截面圆板分析工作量,与一根具有n+1个跨度的连续梁一样简单,完全免去了解微分方程或联立方程式的麻烦。 若将本文各公式略加修改,则完全适用于机械另件设计中的变截面金属圆薄板与旋转圆片应力分析。
Circular sheets with enhanced circular ribs are often encountered in practical projects, especially in water supply and drainage engineering structures. Practical experience points out that in some cases, the use of circular plates with variable cross-sections can save more materials, but the analysis of such structures has become extremely complex and difficult to follow. This paper proposes how to apply a “non-shear moment distribution method” for structural mechanics in recent years to analyze the thin circular plates with stiffened ring ribs and to analyze the circular plates with several ribs. The workload is as simple as a continuous beam with n+1 spans, completely eliminating the need to understand differential equations or simultaneous equations. If the formulas of this paper are slightly modified, it is entirely applicable to the stress analysis of the variable-section metal circular plate and rotating disc in the design of mechanical parts.