An Empirical Formula for Predicting the Dynamic Ultimate Strength of Stiffened Panels Under Longitudinal Impact

被引：2

作者：

Xiong, Yufei ^{[1
]}

Wang, Deyu ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai, Peoples R China

来源：

INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING | 2021年 / 31卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Dynamic compressive ultimate strength; dynamic compressive load; stiffened panels; strain rate; empirical formula; ELASTICALLY RESTRAINED EDGES; COMBINED TRANSVERSE THRUST; RECTANGULAR-PLATES; COMPRESSIVE STRENGTH; LATERAL PRESSURE; CONTAINER SHIP; BOX GIRDERS; TESTS;

D O I：

10.17736/ijope.2021.ty10

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An empirical formula for predicting the dynamic ultimate compressive strength of stiffened panels under longitudinal compressive load was proposed in this paper by curve fitting of massive nonlinear finite element (FE) analysis results. The formula was expressed in terms of the main geometrical properties of stiffened panels and loading speed. Three types of initial imperfections were considered in FE simulation. The applicability of the present FE procedure was verified by comparing it with existing formulae, published simulations, and test results. The influence of strain rate, initial imperfection, and the stiffener spacing was discussed. The fitting accuracy was proved by the comparison between the proposed formula and FE results of 1,058 stiffened panels. The formula was applied to the inner bottom plates of a container ship, an ore carrier, and an oil tanker, and the estimated results agree well with FE results.

引用

页码：230 / 242

页数：13

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