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A Study on Viscous Effects of Roll Damping for Multi-Hull High-Speed Craft
Viscous Effects Roll Damping Multi-Hull High-Speed Craft
2009/4/29
The roll damping plays a very important part of amplitude of roll motion in resonance and trigger of parametric rolling of a ship. Since the viscous damping components are usually dominant in the roll...
Gain-Scheduled Control of a Flexible Marine Riser under Hydrodynamical Damping Force Varying with the Upper End Velocity
Flexible Marine Riser hydrodynamical Upper End Velocity
2009/4/29
In the entry/reentry operation of the flexible marine riser, the operators are required to connect its lower end to the blowout preventer at the seabed quickly with both its top connected angle and it...
传统的减振降噪方法是结构加强，其主要缺点是振动能没有消耗掉，从而导致噪声向其它部位传播。阻尼材料利用高分子材料的粘弹性将振动能转化为热能耗散掉，从而有效地降低结构振动和噪声。阻尼技术对宽频带随机振动和噪声特别有效，尤其适合于以框架结构为主的造船业。