船体结构疲劳强度校核的许用应力范围衡准

PERMISSIBLE STRESS RANGE CRITERION FOR FATIGUE STRENGTH OF SHIP HULL STRUCTURES

本文给出了船体结构疲劳强度校核的许用应力范围衡准的一般形式，以及当应力范围服从Weibull分布时用一生中一遇最大应力范围表示的衡准形式。对有关影响因素及设计应力范围计算作了简要的讨论，并着重研究了集装箱船的疲劳强度校核问题，给出了例题。

A general form of the permissible stress range criterion for fatigue strength of shiphull structures in derived in this paper. On this basis, the permissible 'once in a life'stress range criterion is also derived, which is under the assumption that the long term distribution of the stress range is Weibull type. Some of the influence factors and the calculation of the design stress range are discussed. The emphasis is laid on the fatigue strengthassessment of container ships. A numerical example is given.