多跨失稳的纵骨梁柱屈曲载荷-端缩曲线的理论修正  

Theoretical correction method of load-end shortening curves for longitudinal multi-span unstable overall buckling

作　　者：朱汉波[1] 王福花[2] 万琪[2] 吴剑国[1] ZHU Han-bo;WANG Fu-hua;WAN Qi;WU Jian-guo(Zhejiang University of Technology, Hangzhou 320012, China;Marine Design & Research Institute of China, Shanghai 200011, China)

机构地区：[1]浙江工业大学,杭州320012 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶》2017年第1期35-38,共4页Ship & Boat

摘　　要：针对多跨板架整体失稳的问题,提出一种对规范Smith法扶强材单元载荷-端缩曲线的修正方法,并给出计算公式。结合3块实际的板架模型,分别计算并比较了规范的载荷-端缩曲线、理论修正法载荷-端缩曲线以及非线性有限元法载荷-端缩曲线,验证了修正方法的合理性。With regard to the overall buckling problem of the multi-span grillage, a correction method including the calculating formula is proposed to modify the load-end shortening curves of the regulated Smith Method stiffener unit. Three upper decks with large-span are researched to verify the method. Their load-end shortening curves are given and compared with the three methods, which contains Smith method, correction method and nonfinite element method(NFEM). The comparison of the results verifies the rationalization of the correction method.

关 键 词：载荷-端缩曲线 极限强度 Smith法 非线性有限元 

分 类 号：U661.4[交通运输工程—船舶及航道工程]