Genetic algorithm-based cable-strut tension structure quality optimization method and system
A tension structure, genetic algorithm technology, applied in the direction of genetic law, design optimization/simulation, calculation, etc., can solve problems such as inability to comprehensively evaluate structural stability
Active Publication Date: 2019-08-20
WENZHOU UNIVERSITY
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[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method and system for optimizing the quality of cable-strut tension structures based on genetic algorithms. Compared with the initial structural model, the robust performance of the optimized structure will not weaken the structural model, thus solving the technical problem in the prior art that the section optimization of the cable-strut tension structure is only based on the lightest structure weight and cannot comprehensively evaluate the structural stability
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[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0070] Due to the high geometric nonlinearity of the cable-strut tension structure, its structural properties will continue to change with different input variables. Compared with the linear structure, the functional relationship between the output variable and the input variable is not explicit. In the specific optimization analysis, the zero-order and first-order optimization algorithms are mo...
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According to the genetic algorithm-based cable-strut tension structure quality optimization method and system provided by the invention, a cable-strut tension structure is subjected to optimization analysis and design by adopting a genetic algorithm, and the method comprises the following steps: (1) preprocessing data; (2) taking the sectional areas of various rod pieces of the structure as optimization variables, taking the minimum value of the structure mass as an optimization target, adopting a genetic algorithm to carry out optimization calculation, wherein the calculation constraint conditions are as follows: the calculation constraint conditions are as follows; the robustness of the structure is superior to or equivalent to that of a to-be-optimized cable-strut tension structure; therefore, the search is performed in a global range, the cross section arrangement which minimizes the total mass of the structure is sought by various rod pieces of the structure in the existing area control range, and meanwhile, the robustness of the optimized structure is not weakened compared with that of an initial structure model, so that the asymmetric damage resistance of the structure is ensured, and the structure is insensitive to an interference effect; and on the premise of ensuring the structural safety, the manufacturing cost is reduced within a reasonable range.
Description
technical field [0001] The invention belongs to the field of civil engineering, and more specifically relates to a method and system for optimizing the quality of a cable-strut tension structure based on a genetic algorithm. Background technique [0002] The cable-strut tension structure is a kind of flexible space structure that is formed by tensioning and has a self-balancing prestressing system, which is composed of cables and compression rods as the basic units. Due to the high strength of the cables and the adjustment of the structural prestress distribution Then optimize the structure stiffness distribution, so that the structure has many advantages such as large span, light structure, beautiful shape, excellent economic performance, etc., and has been widely used in practical engineering. [0003] At present, the large-span spatial structure already has relatively mature design methods. However, with the progress of society and economic development, the large-span spa...
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Login to View More IPC IPC(8): G06F17/50G06N3/12
CPCG06N3/126G06F2119/06G06F30/20
Inventor 陈联盟章禾高伟冯姜智超刘毅杰周一一张福勃
Owner WENZHOU UNIVERSITY