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韩玉英 《应用数学和力学(英文版)》1983,4(2):283-290
The conditions for fracture of anisotropic bodies and theirgeometry in stress space are proposed in this paper.The an-alytical formulae expressing the fracture conditions are es-tablished from the viewpoint of energy theory for crack pro-pagation.In stress space the limiting surface corresponding to thefracture conditions derived for anisotropic solids is quadra-tic.It is an ellipsoid in case the mean stress is greaterthan zero and it is hyperboloid in case the mean stress is smal-ler than zero.The conclusions formed by the author in the present paperhave certain generality.Some results obtained by predeces-sors appear to be special cases with respect to the presenttheory. 相似文献
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胡辉 《应用数学和力学(英文版)》2002,23(1):114-118
IntroductionThesleighproblemisaclassiconeinnonholonomicdynamics.ThesolutionstotheproblemwereobtainedbyС .А .Чаплыгин( 1 898)andC .Carathodory( 1 93 3 ) [1].Thereference [2 ]presentedafewquestionablepointsinthesolutions .Anothersolutionwasofferedinthereference[3 ] .Butthe… 相似文献
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