Tracked vehicle vibration test sensor arrangement optimization method
A technology of vibration testing and optimization methods, applied in multi-objective optimization, design optimization/simulation, instruments, etc., can solve the problems of sensor layout redundancy, and achieve the effect of solving layout redundancy problems and reducing economic costs.
Active Publication Date: 2021-07-09
HUNAN UNIV OF SCI & TECH
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Therefore, the present invention proposes a sensor arrangement optimization method for tracked vehicle vibration test, which effectively solves the problem of sensor layout redundancy in tracked vehicle vibration test, and provides technical support for tracked vehicle structure optimization and vehicle lightweight design in engineering practical applications.
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[0042] The present invention will be further described below in conjunction with the accompanying drawings.
[0043] figure 1 It is an implementation step of a method for optimizing the arrangement of vibration test sensors of a crawler vehicle according to an embodiment of the present invention. Such as figure 1 As shown, step S1 establishes a three-dimensional model of the tracked vehicle body and performs finite element calculation and modal analysis, and selects the primary measurement points according to the modal analysis results. In step S2, according to the modal analysis results of step S1, m measuring point positions are selected on the 3D model of the tracked vehicle body as the primary measuring points, i.e. the constraint conditions for sensor layout optimization, and the first 8 orders of the m measuring points are encoded and calculated. Modal displacement. Step S3 selects the minimum off-diagonal element value based on the modal confidence factor (MAC) matri...
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The invention discloses a tracked vehicle vibration test sensor arrangement optimization method, which comprises the following steps of: firstly, establishing a three-dimensional model of a tracked vehicle body, performing finite element calculation and modal analysis, and selecting a primary test point according to a modal analysis result; then, selecting m measuring point positions on the three-dimensional model of the tracked vehicle body to serve as primarily selected measuring points, namely, constraint conditions of sensor arrangement optimization, and calculating modal displacement of the m measuring points and serving as data input; setting a modal setting criterion as an optimization objective function, providing a PSO-IWLF algorithm for solving the problems that a tracked vehicle vibration test sensor is subjected to multi-dimensional optimization, premature convergence occurs in a PSO algorithm, and local optimum is likely to occur, setting algorithm parameters, and carrying out optimization calculation; and finally, arranging sensors according to an optimization result, carrying out a vibration test, and evaluating the optimization result. According to the method, the problem of sensor arrangement redundancy in a tracked vehicle vibration test is solved, and support is provided for tracked vehicle structure optimization and vehicle lightweight design in practical engineering application.
Description
technical field [0001] The invention relates to the technical field of vehicle vibration testing, in particular to a sensor arrangement optimization method for a crawler vehicle vibration testing. Background technique [0002] Tracked vehicles play an important role in modern military, construction, agriculture and other fields because of their strong off-road performance and passability. [0003] Due to the large structure and high curb weight of tracked vehicles, this will definitely affect the maneuverability of tracked vehicles during operation, so it is necessary to carry out lightweight design of tracked vehicle body structure. Measuring the vibration response of tracked vehicles under various excitations through sensor testing can provide theoretical basis and engineering practice guidance for tracked vehicle structure optimization and lightweight design. [0004] At present, in the vibration test of large-scale structural parts, the arrangement of sensors has always...
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Login to View More IPC IPC(8): G06F30/15G06F30/25G06F111/06G06F119/20
CPCG06F30/15G06F30/25G06F2111/06G06F2119/20Y02T90/00
Inventor 杨书仪廖力力凌启辉胥小强陈哲吾戴巨川何兴云
Owner HUNAN UNIV OF SCI & TECH