glamor 发表于 2025-3-23 11:52:10
Impact of Water on Offshore Structures and Infrastructure,y complex phenomenon composed, among other things, of wave action, sea currents, hydrostatic and hydrodynamic forces. These processes are difficult to describe, and there exists a handful of approaches to modelling them, which differ in the level of idealization , [Mei C. C., 198小卷发 发表于 2025-3-23 14:59:56
Homogeneous Transformations and Joint Coordinates in the Description of Geometry of Multibody Systerespectively, three and six degrees of freedom. To describe their positions either three or six independent coordinates must therefore be given. Usually, the position is given in a rectangular clockwise Cartesian system. It is then convenient to express the position of a point as a vector, also call现任者 发表于 2025-3-23 21:40:15
http://reply.papertrans.cn/84/8304/830379/830379_13.pngBUST 发表于 2025-3-23 22:27:32
Nonlinear Models of Materials,.e. where the Hooke’s law is applicable. It is also the case with offshore cranes. In the installation process of underwater pipelines with the reel method, however, the pipes are commonly deformed plastically when they are wound onto the reel. Furthermore, material exposed to prolonged deformationMAUVE 发表于 2025-3-24 02:38:16
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Summary, can evidently be identified. The most comprehensive verification provided by an experiment is naturally the best solution. It is however tedious and costly and in many cases difficult to perform. Offshore structures are often produced as single specimen for a specific order. Carrying out detailed eFEIGN 发表于 2025-3-24 22:50:39
http://reply.papertrans.cn/84/8304/830379/830379_19.png是贪求 发表于 2025-3-24 23:36:28
Modelling of Joining Elements: Constraint Equations,quations of motion. The present chapter discusses a method of modelling spring-damping elements treated as massless objects. Constraint equations occurring when kinematic subchains are joined in certain systems are also presented.