Topology optimization method, system, device and storage medium for improving dynamic deletion rate
A technology of topology optimization and deletion rate, applied in mechanical equipment, design optimization/simulation, combustion engine, etc., can solve the problems of ineffective deletion of redundant materials, unstable optimization, low optimization efficiency, etc., and achieve the goal of reducing redundant materials Use, few iteration steps, good stability
Active Publication Date: 2022-07-12
WUHAN UNIV OF TECH
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[0004] In view of this, it is necessary to provide a topology optimization method, system, device and storage medium for improving the dynamic deletion rate, so as to solve the problem that the traditional fixed deletion rate topology optimization method has low optimization efficiency and unstable optimization, which can not effectively delete redundant data. leftover material
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[0045] The preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention, and together with the embodiments of the present invention, are used to explain the principles of the present invention, but not to limit the scope of the present invention.
[0046] In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined. Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly u...
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The present invention relates to a topology optimization method, system, equipment and storage medium for improving dynamic deletion rate. Relevant parameters; perform finite element solution on the initial structural finite element model, obtain element sensitivity, structural stress uniformity, structure volume fraction index and current step dynamic deletion rate, and calculate the next step structure volume according to the current step dynamic deletion rate; In the next step, the structural volume is solved for a sensitivity threshold, and the initial structural finite element model is updated according to the unit sensitivity and the sensitivity threshold; the above-mentioned solving and optimization steps are performed in a loop iteration until the optimized structural finite element model reaches the predetermined value. Set constraints and preset convergence conditions, and output the optimal topology of the engineering structure. The present invention can output a structure with optimal performance.
Description
technical field [0001] The present invention relates to the technical field of structure optimization, in particular to a topology optimization method, system, device and storage medium for improving dynamic deletion rate. Background technique [0002] Topology optimization is an important branch in the field of structural optimization design. After decades of development, topology optimization has become a mature design method. This method has the characteristics of high design efficiency and large design freedom, and is widely used in engineering structures. design and academic research. Topological optimization can delete inefficient materials in the structure under certain constraints, and find the best distribution of materials in the design domain, so as to obtain lightweight and excellent performance structures. At present, mankind is faced with many problems such as shortage of material resources, environmental impact and technological competition. The advantages of...
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IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/14Y02T10/40
Inventor 刘沐宇张强刘齐民卢志芳吴航宇
Owner WUHAN UNIV OF TECH