单轴受压圆形开孔加筋板剩余极限强度试验及仿真研究  

Experimental and Numerical Study on Residual Ultimate Strength of Stiffened Panels with Circular Opening under Uniaxial Compression

作　　者：钟毅 吕岩松[1] 刘旭 张二[1] 滑林 ZHONG Yi;Lü Yansong;LIU Xu;ZHANG Er;HUA Lin(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China;No.91697 Unit of PLA,Qingdao 266000,China)

机构地区：[1]海军工程大学舰船与海洋工程学院,武汉430033 [2]中国人民解放军第91697部队,青岛266000

出　　处：《中国造船》2022年第6期69-87,共19页Shipbuilding of China

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 52001326, 51779261);the Natural Science Foundation of Naval University of Engineering (Grant No. 2020505030)。

摘　　要：为研究开孔加筋板单轴受压下的极限强度和破坏模式,制作3个不同位置、不同孔径的钢制加筋板模型。开展单轴压力作用下模型的极限强度试验。计及模型的初始几何变形,对3个模型进行数值仿真计算。试验结果表明,模型的极限强度和破坏模式与仿真计算的结果吻合较好。通过研究加载过程,分析模型的破坏机理,指出临近开孔区域的完整板格最先出现失稳波形,是除开孔区域以外的薄弱部位。通过大量有限元计算,得到了开孔位置和开孔直径对加筋板极限强度的影响规律。In order to investigate the ultimate strength and failure mode of stiffened panels with openings under uniaxial compression, three stiffened panel specimens with different hole sizes and positions were designed, and their ultimate strength under uniaxial compression was tested. With the initial geometric deformation of these models considered, their ultimate strength was numerically predicted. The experimental results regarding the ultimate strength and failure mode of the models were in good agreement with the simulation results. By studying the loading process and analyzing the failure mechanism of the models, it was indicated that the buckling appeared first in the intact panel near the opening area, which was the weakest part except the opening area. Through a large number of finite element simulation, influencing rules of hole position and diameter on the ultimate strength of stiffened panels were obtained.

关 键 词：单轴受压 加筋板 圆形开孔 有限元分析 极限强度 

分 类 号：U663.6[交通运输工程—船舶及航道工程]