【摘要】 板锥柱面网壳结构是一种新型的空间结构,此类结构受力合理、整体刚度大、稳定性好,是一种具有广阔发展前景的结构型式。本文基于有限元方法,采用子空间迭代法,研究板锥柱面网壳结构的自振特性;考虑不同跨度、矢跨比、长跨比、网格尺寸对其自振特性的影响;在大量参数分析、计算的基础上,得出了网壳的自振规律,为板锥柱面网壳结构的应用和设计提供理论指导。更多还原

【Abstract】 <Abstrcat>Plate-cone cylindrical reticulated shell is a new type of space structure pattern. Due to bearing reasonable internal force, integral rigidity and good stability, plate-cone cylindrical reticulated shell is regarded as a new structure pattern which has broad development prospect. Adopting subspace iteration method, this paper is concerned with the study on performance of free vibration of plate-cone cylindrical reticulated shell on the basis of finite element. Effects of structure main parameters, such as different span, the ratio of rise to span, the ratio of long-span and lattice size are researched in detail. Based on analysis and calculation of many parameters, rules of free vibration for plate-cone cylindrical reticulated shell are got. The results are valuable in application and engineering design of plate-cone cylindrical reticulated shell.更多还原