Abstract
The purpose of this study is to establish the technique of solving large scale problems associated with multi-body dynamics simulation and to break through the limitations imposed on the traditional methods. It is necessary to compute on computer, which is faster and has larger memory, for multi-body analysis of LSS. But, the sequential algorithm of numerical computation on traditional computer such as PC, EWS, and vector supercomputer has the limitation of capability itself. We have been developing a multi-body dynamics simulation code which is called CNBODY(Constrained N BODY), and renewing for parallel multi-processor computer. The algorithm of CNBODY has been established based on a unified matrix method which is called extended inertia matrix. It is very important to solve the linear system with efficiency for the large scale problem. On distributed parallel machine, the large size extended inertia matrix is divided some regions and set on each node(processor) by appropriate manner. The new CNBODY has several data distribution method, and solves the linear system by direct method. This is a report about the part of performance new CNBODY.
