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Car bady fittings light weight method based on response surface method

A car body, response surface method technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problem of not considering the crashworthiness of the parts structure, and achieve easy parameter changes, controllable precision, and calculation. fast effect

Inactive Publication Date: 2006-04-12
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] After searching the literature of the prior art, it was found that Lan Fengchong and Chen Jiqing, in the article "Optimization and Sensitivity Analysis of Load-bearing Body Panel Plate Thickness" published in "Aviation Manufacturing Technology" 2005 (3): 61-65, used a First-order torsional frequency is the constraint condition, and mass is used as the objective function to carry out lightweight improvement, but it only considers the static performance of parts. In the design of automobile body structure, crash safety performance is the primary consideration, but the citation does not take into account the part structure Crashworthiness

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  • Car bady fittings light weight method based on response surface method
  • Car bady fittings light weight method based on response surface method
  • Car bady fittings light weight method based on response surface method

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Embodiment Construction

[0024] The present invention first improves the structure of the parts, and then theoretically establishes the mathematical model of the functional relationship between the collision energy absorption and its wall thickness and the linear functional relationship between the mass of the body parts and the wall thickness, and takes the mass of the body parts as the objective function , the original energy absorption is the constraint condition, the optimal solution of the objective function is obtained through optimization, that is, the minimum mass, and the corresponding thickness values ​​of body parts and reinforcement plates in the feasible region are obtained, so that the original crashworthiness can be satisfied Under the premise, the optimal lightweight effect of parts can be achieved. Provide specific embodiments according to the content of the present invention, the following is the lightweight of a certain car left front side member based on the response surface method,...

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Abstract

A method for reducing the weight of saloon car bodies based on the response surface method includes: a, improving the structure of the spare parts to select the optimum structure, b, carrying out code transformation to the test design variables, c, arranging test points with the isometiric design method to determine a test plan, d, setting up a response surface model based on the test result, e, validating the effectiveness of the response surface model, f, optimizing the spare parts of the body taking the quality of the spare parts as the target function and the energy absorption parameter as the restriction condition.

Description

technical field [0001] The invention relates to a method in the technical field of automobile design, in particular to a lightweight design method for car body parts based on the response surface method. Background technique [0002] At present, the rapid development of the automobile industry has strengthened the energy awareness of human beings. The lightweight technology of automobile bodies has been highly valued by the industry. The traditional body has not considered lightweight technology, and the body is too heavy. Studies have shown that every 10% weight loss of the car , fuel consumption can be reduced by 6%-8%. The premise of lightweight is to meet the performance indicators of the original car, the most important is the crash safety performance indicators. At present, the research on the lightweight of body parts fails to achieve the optimal lightweight effect through reasonable structural design and improvement of the parts on the premise of first ensuring the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 朱平林忠钦顾镭高新华张宇余海东杨搏
Owner SHANGHAI JIAO TONG UNIV
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