摘要
针对大跨度板架纵骨多跨失稳问题,提出了纵骨梁柱屈曲载荷-端缩曲线的理论修正方法。以一艘船的大跨度上甲板为研究对象,计算板架的临界应力,并按照理论修正方法得到计入多跨失稳影响的载荷-端缩曲线。然后用非线性有限元法验证了理论修正方法的合理性,从而拓广了Smith法的适用性。
With regard to buckling of longitudinal with multi-span beam column in large-span grillage, a correction method is proposed to modify the load-end shortening curves. To verify the method, an upper deck with large-span is researched. First the load-end shortening curves of all failure modes are calculated based on the Rule. Then the load-end shortening curves for buckling of longitudinal with multi-span beam column are given based on the method proposed in this paper. Finally, NFEM is applied to calculate the buckling course of the whole deck grillage with different length. The results indicate that the correction method is appropriate, and the SMITH method after correction may be applied in large-span grillage.
出处
《中国造船》
EI
CSCD
北大核心
2014年第1期46-53,共8页
Shipbuilding of China
