摘要
文章介绍了三维水弹性方法的基本原理,引进了一种三维非线性水弹性方法的数值算法。该算法以三维水动力理论为基础,充分考虑各种非线性效应,包括静水恢复力的非线性、物面非线性以及砰击力的作用,结合水弹性方法建立船体运动方程,并对船舶在波浪中运动受到的载荷进行预报。计算工况根据设计波法来确定,预报结果与线性计算结果进行了对比,差异主要体现在弹振和砰击方面。
The paper introduces the basic principle of 3 D hydroelastic method and a numerical simulation method of 3 D nonlinear hydroelastic method. Based on the 3 D hydrodynamic theory, the algorithm takes consideration of various nonlinear effects, including the nonlinearity of the hydrostatic restoring forces, the nonlinearity of ship body surface and the effect of slamming forces. Ship motion equation is established by combining the hydroelastic method, and loads in wave is predicted. Conditions are determined according to the design wave theory. The prediction results are compared with the results of linear calculation. Springing and slamming are the main factors causing the differences of the results.
出处
《船舶工程》
CSCD
北大核心
2018年第S1期75-78,201,共5页
Ship Engineering
关键词
水弹性方法
非线性载荷
载荷预报
hydroelastic method
nonlinear loads
loads forecasting
