A Method for Estimating Vertical Stiffness of Locomotive Body

A locomotive and car body technology, applied in the field of locomotive body vertical stiffness estimation, can solve the problems of long time, low calculation accuracy, no clear method, etc., and achieve the effect of high accuracy and fast estimation speed

Active Publication Date: 2017-06-23
CRRC ZIYANG CO LTD
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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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  • A Method for Estimating Vertical Stiffness of Locomotive Body
  • A Method for Estimating Vertical Stiffness of Locomotive Body
  • A Method for Estimating Vertical Stiffness of Locomotive Body

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Embodiment Construction

[0027] A method for estimating the vertical stiffness of a locomotive body, such as figure 1 shown, including the following steps:

[0028] Step 1. Locomotive Design Scheme

[0029] According to the requirements of the locomotive research project or the requirements of the locomotive product contract, a preliminary design of the locomotive is carried out to determine the overall design scheme of the locomotive, and the scheme data is the basis for stiffness estimation.

[0030] Step 2. Car body plan

[0031] According to the overall design plan of the locomotive, determine the car body plan, which includes: side beam length, side beam form, beam section parameters, car body section, equipment layout, etc., and then determine the specific data of the following main parameters of the design model: front and rear side bearings Parameters such as center distance L1, vehicle body and upper load F1, section moment of inertia I1, etc.

[0032] In the design of locomotives, there a...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 王毅杨毓康李静隆孝军江太宏
Owner CRRC ZIYANG CO LTD
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