FINITE ELEMENT METHOD OSCILLATION ANALYSIS SYSTEM FOR MULTIPROCESSOR

摘要

PURPOSE:To shorten arithmetic time by parallelly calculating the characteristic matrix of elements and setting a processor to the hierarchy of a Gaussian point or a Fourier harmonic. CONSTITUTION:Individual data for preparing respective elements are prepared from the coordinate data, material data, physical constant and node coupling data of an entire system by a main processor 1, those data are transferred to processors 2 corresponding to the respective elements, and arithmetic for preparing the matrix of elements is executed by parallel processing. On the other hand, a processor 3 is arranged under the hierarchy of an element level for each Gaussian numeral integration point at the element, arithmetic is executed by parallel processing at the element levels of plural points and after the arithmetic is completed, the results are transferred to the processors of element levels and added. Further, processors 4 of hierarchies corresponding to the wave number parameters of Fourier series to express the peripheral changes of node parameters are arranged in the low order of Gaussian numeral integration points, and parallel processing is performed at the respective hierarchies in a certain order from the least significant Fourier series through the Gaussian numeral integration point to the element level. Thus, arithmetic is enabled by the characteristic matrix on the element stage.