A bolt type selection method and bolts obtained by using the method

Abstract

According to the bolt type selection method, the bolt connection rigidity can be simulated more accurately, and the bolt transverse and axial loads given through finite element analysis are close to the actual situation. Bolt loads obtained through finite element analysis are used as input, then a mature and reliable empirical formula is used for checking and model selection, and bolt stress obtained through finite element analysis is not directly used for checking. The respective advantages of a finite element method and an empirical formula are fully utilized, and the model selection accuracy is improved. On the basis of the technical scheme, checking optimization of the bolt can be completed in the concept stage of vehicle model development. Reasonable model selection precision can be achieved only through finite element simulation and empirical formula calculation, no physical test is needed, and therefore the vehicle model development cost is saved, and the research and development period is shortened.

Description

technical field [0001] The invention relates to the field of bolt design and type selection, in particular to a bolt type selection method and bolts obtained by using the method. Background technique [0002] Bolts are one of the most commonly used basic parts in the mechanical field. The selection of bolts at key positions must strictly follow the design and selection requirements of bolts. Choosing the right bolts is very important for saving materials and increasing the stability and life of components. . [0003] In the prior art, the more common way to select bolts is to rely on the empirical formula given in the mechanical design manual for checking and calculation, but the empirical formula usually needs to specify the axial and lateral loads that the bolts bear under a clear usage scenario. In the face of complex structures with multiple bolts, the axial and lateral loads of a single bolt cannot be obtained through theoretical and empirical methods. In fact, to obta...

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Problems solved by technology

[0009] In view of the above situation, the purpose of the present invention is to provide a bolt type selection method, the purpose of which is that the empirical formula method and finite element analysis cannot accurately obtain suitable bolts in actual use, and the bolt type selection and model analysis are not accurate.

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