Discrete optimization design method for connecting structures

A discrete optimization and design method technology, applied in the direction of computing, special data processing applications, instruments, etc., can solve the problems of ignoring the interactive influence of the genetic algorithm invoking the number of positive problems, the error of the surrogate model method, poor accuracy and other problems, to solve the design of the connection structure. problems, fewer iterations, and the effect of reducing development costs and cycles
CN103218501AInactive Publication Date: 2013-07-24HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HUNAN UNIV
Publication Date
2013-07-24
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a discrete optimization design method for connecting structures. The method mainly comprises the following steps: creating a collision finite element model; and then, determining an optimization target, constraint conditions and design variables to be optimized, and creating a three-level orthogonal table; obtaining target response values through numerical simulation calculation, and obtaining correction response values; and finally, reasonably selecting an optimal solution through a comprehensive evaluation value. The method disclosed by the invention can be used for solving the defects that the direct problem time dispatched by a genetic algorithm is overmuch, the response surface created by an approximation model method is a continuous space, the precision is low, and the like, and the discrete optimization design method is high in precision and efficiency and is particularly suitable for discrete optimization design problem of connecting structures with various variables and various levels. The method disclosed by the invention can be further used for reasonably guiding the design of the connecting structures to improve the performance of the connecting structures.
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Description

technical field

[0001] The invention mainly relates to the fields of lightweight and structural design of automobile bodies, in particular to a discrete optimization design method of a connection structure. Background technique

[0002] With the rapid development of the automobile industry, the requirements for fuel consumption and safety in the automobile industry are increasing day by day. With the increasing pollution of the environment, governments of various countries are also paying more and more attention to the reduction of automobile emissions. Among them, automobile lightweight as an important way to reduce automobile fuel consumption has received widespread attention.

[0003] In the structure of the body, different positions of the same part require different performances, resulting in waste of materials in some positions. By means of mechanical fastening, adhesive bonding and welding / welding, the same material with different thicknesses or different materials w...

Claims

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