摘要
为了研究船体梁在循环荷载作用下的极限承载能力,修改了钢材的累积损伤模型,并将其引入到加筋板的极限承载力计算模型之中,提出了一种循环载荷载荷作用下考虑材料损伤累积的加筋板极限承载力的计算方法。采用Visual Basic 6.0编制了循环荷载作用下加筋板的滞回曲线计算程序,进行了加筋板的计算,并采用有限元软件进行对比验证。结果表明:该方法具有较高的精度,可用于船体梁极限强度的计算评估。
The purpose of this paper is to study the ultimate capacity of hull girders under cyclic loading.A cumulative damage model is introduced and modified to calculate the ultimate capacity of stiffened plates and a method is proposed to for evaluating the ultimate bearing capacity of stiffened plates under cyclic loading.A program for analyzing the hysteresis curve of a stiffened plate under cyclic loading is completed with Visual Basic 6.0.The ultimate capacity of stiffened plates is calculated by this method and is compared with the finite element analysis.The results show that this method has higher precision and can be used to evaluate the ultimate strength of hull girders.
作者
吴剑国
王锦琦
叶帆
傅何琪
申屠晨楠
WU Jianguo;WANG Jinqi;YE Fan;FU Heqi;SHENTU Chennan(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Marine Design&Research Institute of China,Shanghai 200011,China)
出处
《浙江工业大学学报》
CAS
北大核心
2021年第2期129-134,共6页
Journal of Zhejiang University of Technology
关键词
循环荷载
加筋板单元
材料损伤
累积损伤力学模型
极限强度
cyclic loading
stiffened plate element
material damage
cumulative damage mechanics model
ultimate strength
