Analysis on influence of spherical bulkhead reinforcement on stability

摘要

The spherical structure, when applied on submarines, is propitious to maintaining weight and improving bearing capacity, thus meeting the requirement of large-depth operation of the submarine. However, the spherical convexity is prone to have flexion due to loss of stability under external pressure. Therefore, the spherical bulkhead convexity stability is a factor that must be considered for submarine structure designers. This thesis aims at the problem of loss of stability under pressure for the spherical bulkhead convexity and brings forward reinforcement method for different spherical bulkheads. Through finite element and external pressure tests, it is proved that the reinforcement can effectively improve the stability of spherical bulkhead. This method can thus be applied to the calculation in designing of submarine structures.