CALCULATIONS FOR CIRCULAR ARC TYPE CORRUGATED MEMBRANE

Using Chien Wei-zang’s general solutions of axial symmetrical rign shells, wecalculate the stress and displacement of circular arc type corrugated membrane under axialloads in this paper. According to the results of calculation.we plot the usable graphs forengineering. Scientists and technicians can keep these graphs for easy reference.     

STRESS AND DISPLACEMENT OF RING SHELLS UNDER CENTRIFUGAL FORCE

Using the results of refs. [1]and[2]about the general axial symmetrical problem. thispaper calculates the stress and displacement of ring shells under centrifugal force. Thesolution is given in Fourier series form.In the paper the examples of open ring shells and close ring shells are givenrespectively.     

圆环壳在离心力作用下的应力和位移

本文应用文[1]、[2]一般轴对称问题的结果计算了圆环壳在离心力作用下的应力和位移,解答以Fourier级数形式给出,文中分别给出了部分环壳和闭合环壳的算例。     

Calculation for cylindrical shell under local vertical loadings

In this paper, we use the method of mixed-type series to derive the analytical solutions of cylindrical shell, which is simply supported along the transverse edges and subjected to the local vertical loads, and give the analytical expressions of the solutions for this kind of shell under five types of local vertical loading. A numerical example for a cylindrical shell roof, which is simply supported along the transverse edges and is free along the longitudinal edges, is given in this paper and from the calculated results it may be seen that the convergence of the solutions is considerably satisfactory. Using the solutions of this paper, we can deal with some practical problems of underground structure.Project Supported by the National Natural Science Foundation of China and by Scientific and Technical Fund of Ministry of Urban and Rural Construction and Environmental Protection.We are grateful to Mr. Lu Ping who has completed partial numerical calculations.     

圆弧形波纹膜片的计算

本文运用钱伟长轴对称圆环壳一般解,计算了圆弧形波纹膜片受轴向力作用时的应力和位移,并根据计算结果绘制了工程上便于使用的图表,可供有关科技人员参考.     

雪型荷载作用下圆环壳的弯曲问题

本文推广了复变量化过程,并通过适当的简化处理,得出了雪型荷载作用下圆环薄壳的型基本方程。文中导出了Fourier矿级数形式的解答,结合已有的文的齐次解,得出了问题的准确解答。文中给出了周边铰支的算例,并通过几组计算结果,讨论了几何参数的影响。     

Calculations for circular arc type corrugated membrane

Using Chien Wei-zang’s general Solutions of axial symmetrical ring shells, we calculate the stress and displacement of circular are type corrugated membrane under axial loads in this paper.According to the results of calculation, we plot the usable graphs for engineering.Scientists and lechnicians can keep these graphs for easy reference.     

CALCULATION FOR CYLINDRICAL SHELL UNDER LOCAL VERTICAL LOADINGS

In this paper,we use the method of mixed-type series to derive the analytical solutionsof cylindrical shell,which is simply supported along the transverse edges and subjected tothe local vertical loads,and give the analytical expressions of the solutions for this kind ofshell under five types of local vertical loading.A numerical example for a cylindrical shellroof,which is simply supported along the transverse edges and is free along the longitudinaledges.is given in this paper and from the calculated results it may be seen that theconvergence of the solutions is considerably satisfactory.Using the solutions of this paper,we can deal with some practical problems of underground structure.