A force and rigidity equivalence-based head car mold shrinkage construction method and a head car mold shrinkage
A head car and stiffness technology, which is applied in the field of head car reduction, can solve the problems of changing the center of gravity of the train, difficult to simulate accurately, and the impact of train collision dynamic response is large, and achieves the effect of high reliability and structural similarity.
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[0087] The present invention will be further described below in conjunction with examples.
[0088] Such as figure 1 As shown, a kind of locomotive shrinkage model construction method based on force and stiffness equivalent provided by the present invention mainly includes the following four aspects:
[0089] 1. Similarity factor derivation of kinetic parameters;
[0090] 2. Partition design of the first car;
[0091] 3. Build the initial reduced model of the head car;
[0092] 4. The collision simulation calculation of the shrinking mold of the head car and the optimization of the shrinking mold of the head car.
[0093] 1. The similarity factor derivation about the dynamic parameters: the present invention considers that the train is a thin-walled aluminum alloy structure, so the similarity relationship of its dynamic characteristics is analyzed for the thin-walled plate shell, that is, the dynamic balance equation based on the thin-walled plate shell adopts similarity T...
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