Compilation method of multi-channel load spectrum
A load spectrum, multi-channel technology, applied in the field of multi-channel load spectrum compilation, can solve the problems of complex load spectrum algorithm and difficult analysis, and achieve the effect of efficient compilation
Pending Publication Date: 2022-05-27
SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD
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[0010] The algorithm for compiling the test load spectrum based on the wavelet transform analysis method is relatively complicated. The wavelet function type, the number of wavelet decomposition layers and the definition of the small load characteristics all have a certain impact on the load spectrum compilation results, and the analysis is difficult.
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[0046] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.
[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.
[0048] It should be noted that the terminology used herein is for the purpose of describing specific emb...
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The invention relates to a compilation method and compilation equipment of a multi-channel load spectrum and a computer readable storage medium. The compilation method of the multi-channel load spectrum comprises the following steps: S1, inputting a multi-channel load spectrum, setting a pseudo damage retention ratio target and a duration screening threshold Tt, and setting a small load threshold Ta of the load spectrum of each channel; s2, traversing the load spectrum, searching all load time periods according to a time length screening threshold Tt and a small load threshold Ta, and calculating an intersection of the load time periods of multiple channels; s3, judging whether a false damage retention ratio target is met or not, and if one channel is met, turning to step S4; if all the channels do not accord with one another, the small load threshold Ta is modified, and the step S2 is executed; and S4, outputting a multi-channel acceleration spectrum. According to the multi-channel load spectrum compilation method and device and the computer readable storage medium, efficient compilation of the load spectrum can be achieved, the analysis difficulty is small, and engineering application is facilitated.
Description
technical field [0001] The invention relates to the technical field of vehicle road simulation test, in particular to a method for compiling a multi-channel load spectrum. Background technique [0002] At present, there are two mainstream technologies in the field of vehicle road simulation test technology, including the relatively mature time-domain damage editing method and the new random load spectrum editing method based on short-time Fourier transform and wavelet transform. [0003] 1. Time Domain Damage Editing Method [0004] By calculating the damage-time distribution characteristics of the local detail strain / force load spectrum of the structural member, the time-domain history information of the load spectrum with less damage is identified and obtained, and the time-domain history of the load spectrum with less damage is deleted to shorten the load spectrum duration. Realize the preparation of test load spectrum. [0005] When using the time-domain damage editing...
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Login to View More IPC IPC(8): G06F30/20
CPCG06F30/20Y02T90/00
Inventor 于佳伟马健君任俊学刘子豪苏泊权
Owner SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD