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Indexed by:会议论文

Date of Publication:2008-07-06

Included Journals:EI、CPCI-S、Scopus

Page Number:255-+

Key Words:Tension distribution; Net cage; Numerical simulation

Abstract:Fishing net should have enough strength to withstand the loading due to current and stormy waves and avoid fishing escape. Differing from other structures made from rigid materials, the intrinsically flexible nets undergo large deformation under external and internal forces. In addition, the length of netting twine undergoes extensional deformation as a result of various loads during fishing operation. The aim of this paper is to investigate the shape and tension distribution of fishing nets in current only. Herein, a numerical model is developed, based on lumped mass method. The fishing net can be modeled as a series of lumped point mass that are interconnected with springs without mass. Lumped point mass are set at each knot and at the center of the mesh bar. We can estimate net shape and tension distribution by calculating the displacements of these point masses under boundary and current conditions. According to our simulated results, the tension distribution in plane and cage net is demonstrated by images and positions where maximum of tension occurs are pointed out for the reference of practical application.