...ABSTRACT ABSTRACT A dynamic model was proposed with the features of high precision and fast response. The dynamical equations of the flexible cable were established by using Newton's second law. Lumped mass method was used to discretize equilibrium equation and continuity equation. The motion...

... for assessing the rockfall hazards using high resolution Digital Elevation Model (DEM) and the probabilistic analysis based on the lumped mass method. Because the reliable prediction of rockfalls is highly related to the three-dimensional nature of actual slope geometry, the proposed model can be integrated...

... ABSTRACT A numerical code is developed to predict the performance of floating fish cage systems. The numerical scheme is based on lumped mass method and the acceleration technique for particle method. It can treat interaction among fish cages and complicated mooring system consisted from...

... ABSTRACT Trawling is one of the methods of fishing. In this paper, single boat trawling is taken up and the method to calculate the motion of a trawl net system using the lumped mass method is shown. In calculation, rational simplification of the trawl net system (creation of an approximation...

... on dynamics of a submarine cable during laying and recovery are shown in this paper. The 2-dimensional lumped mass method is used to calculate the motion and tension of the cable. KEY WORDS: Submarine Cable; Dynamics; Laying; Recovery; Lumped Mass Method NOMENCLATURE : Density of seawater Mj : Cable segment...

... ABSTRACT Lumped Mass method is a proven numerical approach to analyse the problems of mooring lines. The two-dimensional method was originally developed by Walton and Polachek(1959) for various conditions of frequency and amplitude Nakajima et al(1982) carried out investigation on the dynamics...