Front impact conceptual model design method for front structure of automobile

A technology of frontal collision and front structure, applied in computing, special data processing applications, instruments, etc., can solve problems such as mass block rebound, error, and new car model guidance, and achieve a strong practical effect

Inactive Publication Date: 2015-04-29
JILIN UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar to the spring unit of the vehicle LPM in the prior art, elastic materials are used, which will cause the mass block to rebound during the collision process, resulting in corresponding errors
Moreover, in the prior art, the stiffness assignment of the fo

Method used

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  • Front impact conceptual model design method for front structure of automobile
  • Front impact conceptual model design method for front structure of automobile
  • Front impact conceptual model design method for front structure of automobile

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] figure 1 It is a flow chart of the vehicle frontal collision concept design method based on the centralized parameterized model of the present invention, which includes the following specific steps:

[0026] Step 1: The designer conducts an overall design of the vehicle structure in the conceptual design stage, and determines the main parameters and structure of the vehicle, such as body length, width, height and vehicle quality.

[0027] Step 2: The designer determines the scale and shape of the LPM according to the needs of the actual design problem of the frontal crash safety of the vehicle, that is, the number of degrees of freedom of the model, the spatial layout structure, that is, the actual size and position of each subsystem of the energy-absorbing structure of the front of the vehicle body, etc. ;Due...

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Abstract

The invention discloses a front impact conceptual model design method for a front structure of an automobile. The front impact conceptual model design method for the front structure of the automobile includes that simplifying the front impact concept design for the automobile through building a lumped parameter model for the front of the automobile, and evaluating the impact resistance of the automobile at the concept design stage to regulate the axial impact resistance rigidity distribution of the automobile body and reinforce the impact resistance; building a multi-degree of freedom LPM consistent with the finished automobile structure at the concept design stage, and assigning a piecewise linear power-displacement relationship and a nonlinear moment-rotation curve to a corresponding spring unit in the LPM to define the axial impact rigidity and bending characteristics of the LPM. The front impact conceptual model design method for the front structure of the automobile simultaneously generates axial crushing and plastic bending deformation, realizes full automation, is capable of well meeting the demands on the impact resistance analysis for the automobile body in the automobile concept design stage, assists a designer in quickly building the LPM of the automobile, realizes to quickly evaluate and correct a primary design proposal, and enables the design period to be shortened.

Description

technical field [0001] The invention belongs to the technical field of automobile body design, and relates to a design method for a frontal collision conceptual model of an automobile front structure, in particular to a design method for a frontal collision conceptual model of an automobile front structure based on a centralized parameterized model. Background technique [0002] Body structure design is usually divided into two stages: conceptual design and detailed design. The main task in the conceptual design phase of the frontal crash of a vehicle is to determine the arrangement of the energy-absorbing components of the vehicle body and the distribution of the crashworthiness stiffness. As one of the four major assemblies of automobiles, the body structure is an important part of automobile design and an important carrier to ensure the safety performance of automobile collisions. Structural crashworthiness is an important index to evaluate the safety performance of auto...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 修豪华徐涛李宾李彬徐天爽郭桂凯李亦文郭欢
Owner JILIN UNIV
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