摘要
为了合理地评估破损舰船的剩余强度,基于可靠性方法,考虑剩余承载能力和外载荷的不确定性,给出了一种计算破损舰船剩余强度的方法。应用该可靠性评估方法和LR军规的确定性方法对某舰的剩余强度进行评估,计算结果表明两种方法的评估结论相吻合,且采用可靠性方法计算破损舰船的失效概率能更清晰地反映出舰船在破损情况下的残存能力,可以定量地给出海况、船体破损程度、浪向、航速等参数对残存能力的影响,是值得深入研究的方法。同时,还对破口尺寸的变化对剩余强度的影响进行了分析。
In order to assess the residual strength of damaged warships reasonably,based on the reliability method, a method for analyzing the damaged warship＇s residual strength is presented by considering the uncertainties of residual capability and loads. A warship is taken as an example to compute its residual strength by using this method and the certainty method recommend by LR naval ship rules. The conclusions of reliability assessment are quite tally with the resuhs of the certainty method. Moreover, the reliability method presented in this paper can reflect the residual condition of damaged warship more clearly through calculating its failure probability and this method makes quantitative analysis about the effects of sea conditions, damaged degree, sea direction and ship speed, etc. At the same time, the sizes of broken holes which may evidently affect the residual strength are investigated.
出处
《船舶力学》
EI
北大核心
2010年第7期757-764,共8页
Journal of Ship Mechanics
基金
国家自然科学基金资助(50809019)
关键词
破损舰船
剩余强度
剩余承载能力
破损载荷
可靠性
失效概率
damaged warship
residual strength
residual bearing capacity
loads of damaged ship
reliability
failure probability
作者简介
任慧龙（1965-），男，哈尔滨工程大学船舶工程学院教授，博士生导师，研究方向：船舶波浪载荷、船体强度和结构可靠性。
