Influence of flatness on structural strength of end spherical bulkhead
Jingyi Xiong, Yong Liu, Jianjun Ma
Available Online March 2017.
- https://doi.org/10.2991/ifmca-16.2017.125How to use a DOI?
- spherical bulkhead, flatness, stress strength, ultimate load-bearing capacity, initial deflection
- The spherical bulkhead structure in style of sphere-toroid-cylinder combined shells is taken as the research object, and its structural strength with different "flatness" is studied. In order to characterize the geometric flat shape of the spherical bulkhead, the concept of "flatness" is put forward preliminary. Systematic numerical simulations of spherical bulkheads with different flatness are performed, and the effects of flatness on stress strength and ultimate bearing capacity are analyzed. The results show that stress on the inner-surface of the toroidal transition is significant with relatively small flatness, and the plastic deformation tends to soon occur and rapidly develop in the toroidal transition until the structure fails. And when the flatness is large (about larger than 0.7), there is high-level bending stress in the spherical shells and the ultimate bearing pressure is affected significantly by the initial deflection. The range of the flatness is suggested to be 0.35~0.55. The conclusion of this paper could provide a reference for the design of spherical-toroid-cylinder combined shells structure.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Jingyi Xiong AU - Yong Liu AU - Jianjun Ma PY - 2017/03 DA - 2017/03 TI - Influence of flatness on structural strength of end spherical bulkhead BT - Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016) PB - Atlantis Press SP - 801 EP - 809 SN - 2352-5401 UR - https://doi.org/10.2991/ifmca-16.2017.125 DO - https://doi.org/10.2991/ifmca-16.2017.125 ID - Xiong2017/03 ER -