Automobile structure lightweighting design method based on structure intensity variation characteristic

A lightweight design and automotive structure technology, applied in computing, motor vehicles, special data processing applications, etc., can solve the problem that the potential of materials cannot be fully utilized, and achieve high reliability and operability

Inactive Publication Date: 2006-10-11
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

At this time, the structure has not undergone the low-load strength...

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  • Automobile structure lightweighting design method based on structure intensity variation characteristic
  • Automobile structure lightweighting design method based on structure intensity variation characteristic
  • Automobile structure lightweighting design method based on structure intensity variation characteristic

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0022] A lightweight design method for automobile structures based on structural strength variation characteristics: Taking the design of the front axle of a 5-ton truck as an example, the design process is shown in figure 1 , the method steps are:

[0023] 1. Determine the strength change of the structure under a given load condition through the strength test:

[0024] According to the static strength of the structural parts measured after a given load cycle, the critical load p of the structure can be easily calculated by using formula (1) 0 . The critical load is physically similar to the fatigue limit of a material, corresponding to making the structure fatigue life 10 6 times load. Since it is necessary to consider many uncertain factors and parameters to deduce the fatigue limit of the structure from the material parameters, the critical...

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Abstract

The invention discloses a method for reducing the weight of vehicle, based on the structural strength variable character. It comprises: 1, via strength calculation or test to get the strength change in constant load; 2, via the dynamic strength increase matrix of structure, attaining the critical load; 3, processing structure finite analysis on the structure, calculating the stress in critical load; 4, fixing the stress of weight reduced structure and designing relative structure. With said invention, the structure can attain longer service life and reduce weight. Said invention has high reliability and operational property. Since, there is not strength test on the sample; the user can calculate the strength increase in the sample load according to the lower-load strength character of structure, to calculate the critical load, to realize weight-reduced structure.

Description

technical field [0001] The invention relates to a lightweight design method for an automobile structure, in particular to a lightweight design method for realizing an automobile structure by applying structural strength change and low-load strengthening of the structure. Background technique [0002] For a long time, my country's automobile design has adopted the method of experience and analogy. However, foreign companies such as Europe, America, and Japan have experienced gradual development, from the initial extensive design (based on experience and analogy) to strength reliability design (based on the research results of service load and fatigue strength of materials and structures) to Up to the current lightweight design (based on high-strength material development and high-tech process technology). [0003] In recent years, in order to cope with the increasingly fierce global competition, foreign major automobile companies have further develope...

Claims

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Application Information

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IPC IPC(8): B62D65/00G06F17/50
Inventor 卢曦郑松林褚超美
Owner UNIV OF SHANGHAI FOR SCI & TECH
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