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九.其它变形力的解析方法及不同方法的比较除了前面叙述的应用得较多的滑移线法,上限法及主应力法而外,在解析法中还有能量法及有限单元法。能量法是以能量守恒为基础,其基本原理为外力所作的功(包括外摩擦功)等于内力所作的功。变分法也是属于这范畴的,其依据为变形体的实际形状与所有假想形状的区别为所
Nine other methods of analysis of deformation force and comparison of different methods In addition to the previously described more applied slip line method, the upper limit method and the main stress method, the analytical method also has the energy method and the finite element method. Energy law is based on the conservation of energy, its basic principle of work done by external forces (including external friction work) is equal to the work done by internal forces. Variational method also belongs to this category, based on the actual shape of the deformed body and all the hypothetical shape of the difference