Optimization design method and device for elastic strip and storage medium
An optimized design and elastic strip technology, which is applied in the field of rail transit, can solve problems such as heavy workload, small optimization range, and hidden performance problems, and achieve the effects of reliable elastic strip performance, accurate optimization results, and strong applicability
Pending Publication Date: 2021-08-20
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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Problems solved by technology
[0003] The existing technology only considers the stress distribution and displacement changes of the elastic strips, but does not consider the natural vibration frequency and modal characteristics of the elastic strips, so there are potential performance risks, and the existing technology mainly performs finite element analysis first, and then repeatedly modifies the parameters for verification , heavy workload and time-consuming
The optimization range of the existing technology is small and cannot meet the optimization needs of different track structures
Method used
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[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0018] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or a...
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The invention discloses an optimal design method and device for an elastic strip and a storage medium, and belongs to the technical field of rail transit. The method comprises the following steps: obtaining basic parameters of an elastic strip according to a spatial geometrical relationship of the elastic strip, and endowing a current parameter value and a current moving step length to the basic parameters according to a predetermined mechanism; calculating by using the current parameter value and the current moving step length to obtain a current optimized sub-region and a current numerical test result; constructing a current approximate constraint equation meeting an elastic strip constraint condition by utilizing a regression analysis method according to a current numerical test result, and solving to obtain a current approximate optimal solution; and if the range of the current optimization sub-region is not greater than a predetermined range, determining the current approximate optimization solution as an approximate solution, and if the range of the current optimization sub-region is greater than the predetermined range, calculating a next approximate optimization solution according to a predetermined mechanism. The method is high in applicability, the efficiency of the calculation process is higher, and the optimization result is more accurate.
Description
technical field [0001] The invention relates to the technical field of rail transit, in particular to an optimal design method, device and storage medium of a spring bar. Background technique [0002] The existing clip design method is to firstly propose the design parameters of clip pressure, elastic distance, and residual deformation according to the requirements of the track structure, and then establish the basic structure and geometric dimensions of the clip. Afterwards, the elastic-plastic finite element method is used to calculate the stress state at each position of the elastic strip and calculate the corresponding stress to determine the position of the dangerous point. After determining the danger point, check the strength and fatigue performance. Finally, according to the results of the strength and fatigue performance check, the structure of the elastic bar is changed, and the buckle pressure, spring stroke, strength, residual deformation and fatigue strength ar...
Claims
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IPC IPC(8): G06F30/17G06F30/23G06F111/04G06F111/10G06F119/14
CPCG06F30/17G06F30/23G06F2111/10G06F2111/04G06F2119/14
Inventor闫子权肖俊恒时瑾方杭玮孙林林李子睿崔树坤于毫勇张欢李彦山李承亮
OwnerRAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI