A Method for Estimating Vertical Stiffness of Locomotive Body

Abstract

The invention discloses a locomotive body vertical rigid estimation method, which comprises the following steps of step 1, confirming a locomotive total design scheme; step 2, confirming a locomotive body scheme comprising boundary beam length, boundary beam form, girder cross-section parameters, locomotive body cross section and equipment layout, and designing front and back side bearing center distance L1 of a locomotive type, a locomotive body and upper part load F1, cross sectional moment of inertia I1 and locomotive middle deflection Y1; step 3, selecting a locomotive body type similar to the designed locomotive type from the existing locomotive type database, and obtaining front and back side bearing center distance L2, a locomotive body and upper part load F2, cross sectional moment of inertia I2 and locomotive middle deflection Y2 from the similar locomotive type; step 4, calculating locomotive type comparison coefficients; step 5, calculating locomotive middle deflection; step 6, evaluating rigidity and the like. The estimation method has higher accuracy and fast estimation speed, and a few minutes are only needed under the condition of complete data.

Description

technical field [0001] The invention relates to a method for estimating the vertical stiffness of a locomotive body. Background technique [0002] In the process of locomotive design, due to the frequent changes of locomotive design schemes and many schemes during the scheme design period, it is required to obtain various design data quickly. The vertical stiffness of the locomotive frame is a key data. If the locomotive scheme has a good initial vertical stiffness, then the design efficiency can be improved during the locomotive design process. [0003] At present, the calculation of the vertical stiffness of the locomotive car body at home and abroad is mainly obtained by the simulation analysis of the car body. The analysis process takes a long time, generally more than 10 days, and is not suitable for use in the scheme design period. Therefore, in During the scheme design period, there is no clear calculation method for estimating the vertical stiffness of the locomotiv...

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Problems solved by technology

[0003] At present, the calculation of the vertical stiffness of the locomotive car body at home and abroad is mainly obtained by the simulation analysis of the car body. The analysis process takes a long time, generally more than 10 days, and is not suitable for use in the scheme design period. Therefore, in During the scheme design period, there is no clear calculation method for estimating the vertical stiffness of the locomotive. The estimation of the vertical stiffness is based on the designer's design experience for simple estimation. There is no clear method, and the calculation accuracy is not high

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