# 搁置脚载荷作用下的甲板压力分布特征实验和数值分析

## 1，徐志亭2，王福花2，王德禹1熊群飞 1 200240上海交通大学 船舶海洋与建筑工程学院，上海2 200011中国船舶及海洋工程设计研究院，上海

Chinese Journal of Ship Research - - NEWS -

Experiment and numerical analyses for pressure distribution on deck under undercarriage load

XIONG Qunfei1，XU Zhiting2，WANG Fuhua2，WANG Deyu1 1 School of Naval Architecture，Ocean and Civil Engineering，Shanghai Jiao Tong University， Shanghai 200240，China 2 Marine Design and Research Institute of China，Shanghai 200011，China Abstract：［Objectives］Complex contact takes place between a deck and the undercarriage of equipment. The undercarriage load cannot simply be regarded as a uniform load. In order to investigate the pressure distribution between a deck and undercarriage，［Methods］ the nonlinear contact calculation of the undercarriage of a large piece of equipment is made using the finite element method，and the pressure distribution characteristics of the deck are analyzed. The distribution of the contact force is then verified through experiment. On this basis，a calculation method for replacing the undercarriage load with the equivalent wheel load is proposed which converts complex nonlinear contact calculation into linear elasticity calculation.［Results］It is found that the contact force is mainly distributed on the web beam and the front of the undercarriage，and the latter exerts great stress on the deck. The contact force of the front end of the undercarriage is about 25% that of the total load. The experimental results are in good agreement with the numerical results.［Conclusions］This simplified calculation method is practicable in deck design and strength analysis for similar kinds of ship. Key words：undercarriage； wheel load； deck； nonlinear contact analysis； pressure distribution； simplified calculation method

0引言

1 非线性数值分析 1.1 接触问题概述

1.2 计算模型

Fig.1 图1 隐去顶板的搁置脚模型The undercarriage model with hidden roof