Method for designing front structure of body of automobile and method for designing same

Abstract

The invention discloses a method for designing a front structure of a body of an automobile and a method for designing the same. The methods aim to solve problems of extensive repeated required structural optimization, massive experimental verification by the aid of engineering sample automobiles, high development cost and the like in follow-up development due to local or global defects in the traditional method for designing a front structure of a body of an automobile. The methods are mainly characterized in that absorbed energy and a crushing length of an energy absorption component of a target automobile are acquired on the basis of an acceleration equivalent and energy distribution, theoretical average passing force of the energy absorption component is computed, and design parameters of the energy absorption component are designed according to a principle that actual average passing force of the energy absorption component is higher than or equal to the theoretical average passing force. The methods have the advantages that the obtained front structure of the body of the automobile is reasonable and has few defects, and the methods are favorable for follow-up designs for the automobile; the frequency of follow-up trial production and tests for collision sample automobiles can be reduced advantageously, and the development expense can be greatly reduced.

Description

technical field [0001] The invention relates to the field of automobile design, in particular to the design field of the front structure of the automobile body. Background technique [0002] The casualties caused by the frontal collision of automobiles account for the main proportion of the total casualties in traffic accidents, and the front body structure is the cornerstone to determine whether the frontal collision of automobiles is safe or not. [0003] The design of the front structure of the automobile body mainly refers to the design of the design parameters of the main energy-absorbing components in the automobile body, and the design parameters refer to the size, material, etc. [0004] figure 1 It is a typical structural diagram of a car engine compartment, which can be divided into the following energy-absorbing sections: the first energy-absorbing section D0, the second energy-absorbing section D1, the third energy-absorbing section D2, and the fourth energy-abs...

AI Technical Summary

Problems solved by technology

In this case, the equivalent acceleration is only a preliminary evaluation of the crash safety performance after the design of the first version of the digital-analog structure of the target vehicle is completed and the simulation analysis is completed. It still belongs to the traditional design idea of ​​"empirical design first, then analysis and optimization". , failed to guide the development of cars from the source, so the aforementioned structural design defects still cannot be eliminated

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