锥-环-柱结合壳的应力和稳定性

STRESS AND STABILITY OF CONE-TOROID-CYLINDER COMPLEX SHELLS

本文用解析法计算了受中面均布法向载荷作用的锥-环-柱结合壳中的应力值，并根据Trefftz准则计算了其失稳临界压力。计算结果说明，在总体几何尺寸与壳厚相同的情况下，锥-环-柱结合壳与锥-柱结合亮相比，过渡区的局部应力值显著减小，失稳临界压力提高。

Stress in cone-toroid-cylinder complex shells under uniform hydrostatic pressures are investigated by means of a analytical method developed in the present paper and references [4, 5]. Critical values of external pressure for the complex shells are also presented on the basis of the Trefftz criterion.The numerical results show that the local stress values in cone-toroid-cylinder complex shells are significantly lower than those in the similar cone-cylinder complex shells with same overall dimensions and wall thickness under the same load, meanwhile, the buckling pressure for cone-toroid-cylinder complex shells is higher than that for the corresponding cone-cylinder complex shells.