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Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel

A car instrument panel, multi-objective optimization technology, applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., can solve problems such as difficulty in implementing analysis methods, difficulty in realizing overall comprehensive design, difficulty in design organization, etc., to shorten development time cycle, improve computing efficiency and accuracy, and reduce development costs

Active Publication Date: 2011-04-20
TONGJI UNIV
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Problems solved by technology

[0002] The automobile instrument panel structure is a complex engineering system with multidisciplinary interactions and interrelationships. In this case, it is difficult to achieve the overall comprehensive design with traditional optimization methods. Therefore, it is necessary to use the MDO (Multidisciplinary Design Optimization) theory and method to solve this problem
At present, the multi-disciplinary and multi-objective optimization of the instrument panel structure system has high calculation and high information exchange volumes, difficulties in implementing analysis methods, and difficulties in design and organization.

Method used

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  • Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel
  • Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel
  • Method for realizing multidisciplinary and multi-objective optimization of structural system of automobile instrument panel

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Embodiment Construction

[0025] Please refer to the accompanying drawings for a further description of the present invention.

[0026] Such as figure 1 and figure 2 As shown, the present invention provides a kind of method that realizes the multidisciplinary multi-objective optimization of automotive instrument panel structure system, and this optimization method comprises the steps:

[0027] ⑴Decompose the automobile dashboard system based on the multidisciplinary decomposition theory, and determine the objectives of each subsystem to be investigated;

[0028] The automobile instrument panel is decomposed into a multidisciplinary system, which is divided into: structural lightweight sub-discipline, noise and vibration NVH (Noise, Vibration and Harshness) sub-discipline, collision sub-discipline, fatigue life prediction sub-discipline and other sub-disciplines; among them, NVH The sub-discipline examines the instrument panel mode, bending mode and torsional mode; the collision sub-discipline is div...

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Abstract

The invention discloses a method for realizing multidisciplinary and multi-objective optimization of a structural system of an automobile instrument panel, which is used in conceptual design and detailed design stages of the automobile instrument panel. In the method, the constitutive relation of a material is obtained based on a high-speed tensile test for a test specimen; on the basis of the constitutive relation, NVH (noise, vibration and harshness) performance analysis, service life prediction, head impact, knee pad impact and other discipline simulation analysis on the instrument panel structure are completed; based on a multidisciplinary coordinated optimization strategy, multidisciplinary cross analysis is carried out on the instrument panel system; and based on a radial basis function, a response surface method, a concurrent subspace method and a multi-objective genetic algorithm, multidisciplinary and multi-objective optimization design is carried out to obtain the Pareto optimal solution set of the instrument panel system, thus comprehensive optimization of performances of the automobile instrument panel such as structural lightweight, NVH performances, life prediction, passive safety and the like is realized so as to guide and realize efficient development and improved design of the instrument panel product.

Description

technical field [0001] The invention relates to an optimization method of an automobile instrument panel structure, in particular to a method for performing multidisciplinary target optimization of an automobile instrument panel structure in the stages of conceptual design and detailed design. Background technique [0002] The automobile instrument panel structure is a complex engineering system with multidisciplinary interactions and interrelationships. In this case, it is difficult to achieve the overall comprehensive design with traditional optimization methods. Therefore, it is necessary to use the MDO (Multidisciplinary Design Optimization) theory and method to solve this problem. At present, the multi-disciplinary and multi-objective optimization of the dashboard structure system has high calculation and high information exchange volumes, difficulties in the implementation of analysis methods, and difficulties in design and organization. With the further improveme...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 吴光强王平盛云
Owner TONGJI UNIV
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