关于稳定性临界应力与欧拉应力关系曲线的思考

当采用弹性理论对舰船结构进行稳定性计算时，其欧拉应力超过了材料的比例极限，可应用临界应力与欧拉应力关系曲线得到计算构件的临界应力。因此，稳定性的临界应力与欧拉应力关系曲线将影响到舰船结构的稳定性设计，乃至总纵极限强度的校核。通过对相关资料进行综合分析，就“舰船通用规范”中的稳定性临界应力与欧拉应力关系曲线问题提出了看法。

A Study on the Relation Curves Between Critical Stress of Stability and Euler Stress

For calculating the stability of ship structures by using elastic theory, however, the Euler stress is over the proportional limits of material, and it is required to obtain the critical stress of the members through the relation curves between the two stresses. The stability design of ship structures, even the check of longitudinal limit strength, therefore, is influenced by the relation curves. A discussion upon the issues of the relation curves in the General Specifications for Ships is presented by analyzing some documents concerned.