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SYNCHroNOUS EFFECT OF SLIPPING HEAVY LOADS ON ro-ro ship roLLING IN WAVES

Applied Mathematics and Mechanics(English Edition) 2006年第7期27卷 959-966页

作者：张银龙沈庆陈徐均 Second Engineers Scientific Research Institute of the General Armaments Department Beijing 100036 P.R.China Engineering Institute of Engineer Corps PLA University of Science and Technology Nanjing 210007 P. R. China Engineering Institute of Engineer Corps PLA University of Science and Technology Nanjing 210007 P.R.China

Common effect of wave and slip of internal vehicles will make rolling of the roll-on ship serious. This is one of the important reasons for overturn of ro-ro ships. The multibody system with a floating base is composed of ro-ro ship and slipping vehicles. Takes the rolling angle of the ship and the transverse displacements of the slipping vehicles on desk as freedoms. Making use of the analysis of apparent gravitation and apparent buoyancy, the wave rolling moment is derived. By means of dynamic method of multibody system, dynamic equations of the system are established. Taking a certain channel ferry as an example, a set of numerical calculation have been carried out for rolling response of the multibody system with a floating base of a ro-ro ship and displacements response of the slipping vehicles under common effect of free slipping vehicles and wave, and a conclusion has been drawn that the motion of the numerous free slipping heavy loads will trend to be synchronous under restraining of the side-wall bulkhead with time because of repeated collision.

关键词： ro-ro ship slipping heavy loads floating base multibodies system synchronous effect dynamics

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Dynamic analysis of multibodies system with a floating base for rolling of ro-ro ship caused by wave and slip of heavy load

引用

Journal of Marine Science and Application 2003年第2期2卷 17-24页

作者： Qing Shen Yue Li and Xu-jun Chen PLA University of Science and Technology The Engineering Institute of Engineer Corps Nanjing China (GRID:grid.440614.3)

Common effect of wave and slip of internal heavy load will make rolling of the roll-on ship serious. This is one of the important reasons for overturn of ro-ro ships. The multibodies System with a floating base is composed of ro-ro ship and slipping heavy load. This paper takes the rolling angle of the ship and the transverse displacement of the heavy load on desk as two freedoms. Making use of analysis of apparent gravitation and apparent buoyancy, the wave rolling moment is derived. By use of dynamic method of multibodies system with a floating base, dynamic equations of the system are established. Taking a certain channel ferry as an example, a set of numerical calculation have been carried out for rolling response of the ship and displacement response of the slipping heavy load under common effect of synchro-slipping heavy loads and wave.

关键词： ro-ro ship floating base multibodies system dynamics

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