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本文提出并证明了普遍适用于以广义位移为独立变量的各种数值模型的内力影响面分析的机动算法原理。这一原理把内力影响面分析归结为求解在一个等价荷载作用下的结构位移场,并给出了得到等价荷载的方法。用本文方法得到的是结构某一点的内力的影响面,而且对数值模型来说,是精确解。作为本文原理的应用,用机动法分析了采用有限条模型的薄板的内力影响面,并给出了若干数值例子。
This paper proposes and proves the principle of maneuvering algorithm which is generally applicable to the analysis of the internal force influence surface of various numerical models with generalized displacement as an independent variable. This principle reduces the analysis of the internal force influence surface to solving the structure displacement field under the action of an equivalent load, and gives the method of obtaining the equivalent load. What is obtained by this method is the influence surface of the internal force at a certain point of the structure, and it is an exact solution to the numerical model. As an application of the principle of this paper, the influence of the internal force of a thin plate using a finite strip model was analyzed by a maneuvering method, and several numerical examples were given.