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本文得到了刚度矩阵K发生变化时,系统矩阵S的和持征值及特向量变化量计算的基向量表示,这一方法可简化特征值与特征向量变化量的计算,可节省计算时,并将此方法应用于转子裂纹诊断,而转子裂纹诊断是转子动力学的热门问题,对保证转子运行安全性具有重要实际意义。 相似文献
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ELEMENTARY PARTICLE THEORY GROUP DEPARTMENT OF PHYSICS PEKING UNIVERSITY 《中国物理C(英文版)》1977,1(1):19-36
In this paper,the color symmetry of stratons for a theoretical model proposed some times ago is investigated.This symmetry contains two kinds of transformations, the first is color gauge transformations which leave the color mumber of stratons conserved,the second is color permutations which indicate the equivaluence of dif- ferent color stratons.The structure of this symmetry group(S3α)is investigated.The irreducible representations(IR's)of S3α and the reduction of their direct product are given.The relation between IR's of S3α and those of color U(3)group is discussed. In a simplest physical model only two neutral vector gluons are needed and the super-strong ihteraetions among stratons exhibit saturation properties similar to but somewhat different from the case of the Han-Nambu model.Not only the color singlet, but also other color neutral states belonging to IR's 2 or 1 of S3α all belong to the lowest energy level of the super-strong interactions.If there were eight degenerate vector gluons belonging to IR's 2 and 6,the Han-Nambu model would be reproduced. 相似文献
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In this paper, we propose an SU(4)×S3a scheme of the Straton Model and discuss the classification of mesons. We suggest the possible existence of several colour excited states with masses around 2 GeV in companion with charm mesons. We also discuss the properties and the experimental behavior of these colour excited states, especially, the possible contribution of these states in several new phenomena. 相似文献
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