水流和波浪作用下渔具锚索张力和形状计算的研究

锚索是张网等定置渔具和鱼类养殖网箱中为了固定有关装置的重要部件,探索水流和波浪对锚索影响是研究定置渔具和设施的重要内容。本文从分析锚索在水流和波浪作用下的受力情况着手,列出水流作用在锚索上的水动力、锚索水中自重、以及波浪对锚索的作用力,再根据力学基本原理建立渔具锚索张力和形状的方程式。在确定初边值后求方程的数值解。用2种不同材料制作的锚索,聚乙烯索和钢丝索对比进行数值计算,从而探索锚索张力、形状与水流、波浪、自重之间的关系。

Study on Tensions and Shapes Calculation of Anchor Rope under Effects of Sea Currents and Waves

Anchor ropes which are used to fix fishing gears are important components in fishing gears as the stake net and net-cage.Researching the effects of currents and waves on anchor ropes is important thing in studying set fishing nets and equipments.This paper starts with analysing the forces acting on the anchor ropes under the effects fo sea currents and waves,lists the forces on the ropes such as hydro dynamics,self-weight and intertia resistance in accelerating movement and establishes equations of tensions and shapes calculation of anchor ropes according to the basic mechanics principle,and finds numberic solutions after detimining the initial boundary value.To explore the relations between tension,shape and current,wave,self-weight,the numberic solutions after detimining the initial boundary value.To explore the relations between tension,shape and current,wave,self-weight,the numberic calculations of contrasting PVC rope with wire are carried out so as to find their relations.