新型护舷并靠状态下低速碰撞性能评估比较

Comparison on low-speed collision performance of new-type fenders between two side-by-side ships

本文针对适用于并靠两船接触位置位于水面以下的2种新型护舷-潜没式护舷和气液混合型护舷,通过分别建立2种护舷及并靠两船的有限元模型,采用数值模拟方法对船体和2种护舷的低速碰撞性能进行评估。对于船型差异较大、两船接触位置在水面以下的情况,气液混合型护舷相较潜没式护舷性能更优,其吸能量大,压缩量较小。通过评估比较潜没式护舷和气液混合型护舷在并靠状态下低速碰撞的性能特性,为海上船舶并靠的护舷形式提供选择依据。

This paper discusses two new-type fenders,the submerged fender and the hydro pneumatic fender,which are suitable for the case of that the connect position between two side-by-side ships is below the water surface.Viaestablishingthe finite element models of two fenders and the two side-by-side ship hulls,this paper evaluates the low-speed collision performance between the ship hulls and the fenders by thenumerical simulation calculation method.For the case of great difference of ship types and the contact position of the two side-by-sideships below the water surface,the performance of the hydro pneumaticfender is better than the submerged fender,which has larger energy absorption and smaller compression.Through the evaluation and comparison on the performance characteristics of thesubmerged fender and the hydro pneumatic fender in low-speed collision,the results can provide the basis for the selection of fenders when two ships side by side.