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Method, system and readable storage medium for optimizing crashworthiness performance of energy-absorbing structures

A technology of energy-absorbing structure and optimization method, applied in the field of traffic safety, can solve the problems of rear-end collision and algorithm falling into local optimum, and achieve the effects of small deceleration, high optimization accuracy and high utilization rate.

Active Publication Date: 2021-10-26
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] On November 22, 2012, a subway train in Busan, South Korea broke down, and the train that came after it was too fast and hit the car in front, resulting in a rear-end collision, injuring more than 100 people
[0004] At present, the research on the optimization of energy-absorbing structures is mainly focused on metal thin-walled tubes or metal thin-walled tubes filled with foam materials; in terms of optimization algorithms, most of them use single agent models and existing heuristic algorithms to solve them. Its significant disadvantage is that the complex mathematical model fitted by the surrogate model may cause the algorithm to fall into local optimum

Method used

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  • Method, system and readable storage medium for optimizing crashworthiness performance of energy-absorbing structures
  • Method, system and readable storage medium for optimizing crashworthiness performance of energy-absorbing structures
  • Method, system and readable storage medium for optimizing crashworthiness performance of energy-absorbing structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This example discloses a subway composite adapter structure, which is mounted on both sides of the front end of the subway chassis. like figure 1 As shown, including:

[0055] Front end plate 7; rear end plate 1; side panel 4 between the front end plate and the rear end plate; through the center of the partition and the leader 6 connected to the front end plate 6; aluminum honeycombs that are filled in the separator gap; The front panel and the rear end plate are covered with a thin-walled square tape 3 of the separator and aluminum honeycomb.

[0056] Preferably, if figure 1 As shown, the interior of the thin-walled square tube is composed of two aluminum cells having two axial dimensions: the axial dimension large aluminum honeycomb 2 is deployed near the front end plate, and the axial dimension is small aluminum honeycomb 5 is approaching the rear end plate deployment. And the same specifications of aluminum honeycombs are symmetrical about the guide bar. For example, al...

Embodiment 2

[0060] This example discloses a method optimization method for a composite suction structure, such as a size of the associated member, and the like on the suction structure similar to the above embodiments.

[0061] This example discloses a method optimization of a composite suction structure, including:

[0062] Step S1 determines the campedory optimization agent model.

[0063] In this step, it is specifically: establishing a mathematical model for collision analysis, determining a mathematical model of camping-resistant optimization analysis, and selecting training samples to interact out at least two different proxy models, then select test sample verification of each agent model Accuracy, from the highest precision, the highest, the high-precision, optimization agent model.

[0064] Optionally: In this step, a collision analysis model for structural camping optimization can be established in nonlinear finite element software ANSYS / LS-DYNA. Among them, the thin-walled square...

Embodiment 3

[0110] This example discloses a composite suction structure campedural resistance optimization system, including a memory, processor, and a computer program stored on the memory and can run on the processor, the processor performs the above-described computer program. The step of the method embodiment.

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Abstract

The invention relates to the technical field of traffic safety, and discloses a method, a system and a readable storage medium for optimizing the crashworthiness performance of an energy-absorbing structure, so as to further improve the performance. The method of the invention includes: determining the crashworthiness optimization proxy model; and solving the crashworthiness optimization proxy model based on a mixed algorithm. The hybrid algorithm of the present invention takes the particle swarm algorithm as the main body. As the number of iterations increases, the depth search ability of the algorithm gradually decreases. The explosion operation of the fireworks algorithm is introduced without destroying the cooperation between particle species, and the individual extremum is used as an explosion firework. Strengthen the local search ability and diversity of the algorithm. In the fireworks explosion operation, the explosion number and explosion radius of each firework are determined by the fitness function values ​​of all individual extreme values; further, in order to avoid premature algorithm, the global extreme value Do Logistic mapping processing to help the population jump out of the local optimum.

Description

Technical field [0001] The present invention relates to the field of traffic safety, and more particularly to a method of resisting a camping performance optimization method, a system and a readable storage medium. Background technique [0002] On November 22, 2012, a subway train in Busan, South Korea had a fault. Subsequent trains hit the former car due to the speed of too fast, leading to rear-end accidents, causing more than 100 people injured. In order to reduce collision losses, the installation of the capability structure is critical in the installation of the subway. In recent decades, relevant scholars and researchers have tried, simulation and theoretical research on different capability structures. [0003] The plastic deformation of the metal thin-walled member during the collision can dissipate most of the energy, and the metal thin-walled structure is used as the main capsule member has become a common phenomenon. At the same time, aluminum cellular is a high-streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/27G06N3/00
CPCG06N3/006G06F30/15
Inventor 谢素超李海红姚曙光王宁王达冯哲骏
Owner CENT SOUTH UNIV
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