Method for constructing comprehensive working condition vibration spectrum of armored vehicle and method for constructing long-life test spectrum of armored vehicle

A technology of vibration spectrum and working conditions, which is applied in special data processing applications, complex mathematical operations, instruments, etc., can solve the problems of inability to simulate long-life simulation tests and directly use comprehensive working conditions, and achieve effective simulation of real vibration environments and test The result is real and reliable, and the effect of improving the construction accuracy

Active Publication Date: 2021-07-09
UNIT 63966 OF PLA
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  • Application Information

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Problems solved by technology

[0004] However, the random vibration environment measurement data induction method stipulated in the standard GJB/Z 126-99 "Vibration and Shock Environment Test Data Induction Method" can only summarize the random vibration data of a single working condition, and obtain the random vibration specification spectrum
However, armored ve

Method used

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  • Method for constructing comprehensive working condition vibration spectrum of armored vehicle and method for constructing long-life test spectrum of armored vehicle
  • Method for constructing comprehensive working condition vibration spectrum of armored vehicle and method for constructing long-life test spectrum of armored vehicle
  • Method for constructing comprehensive working condition vibration spectrum of armored vehicle and method for constructing long-life test spectrum of armored vehicle

Examples

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Example Embodiment

[0078] Example 1

[0079] This embodiment provides a method for constructing a vibration spectrum of an armored vehicle under comprehensive working conditions. The vibration spectrum includes an actual measured spectrum and a normative spectrum, such as figure 1 shown, including the following steps:

[0080] Step 101: Obtain the road surface ratio b under the i-th road condition of the armored vehicle test comprehensive working condition i And the speed ratio of the jth speed used in the ith road condition is a ij ,in, p is the total number of road types, and q is the total number of vehicle speed types. For example, a total of 8 kinds of road surfaces are involved, and 9 kinds of vehicle speeds are used on each road surface, and the relationship is shown in the following table.

[0081]

[0082] Step 102: Obtain the measured spectrum of the mth sample under road conditions i and vehicle speed j respectively for a single working condition Measured spectrum accordin...

Example Embodiment

[0145] Example 2

[0146] This embodiment provides a method for constructing a long-life test spectrum of an armored vehicle, such as Figure 4 shown, including the following steps:

[0147] Step 201: Obtain the time T of the j-th speed used for driving in the i-th road condition ij ;

[0148] Step 202, the time T of the j-th vehicle speed used for driving according to the i-th road condition ij , calculate and obtain the segmental acceleration proportional coefficient β under road conditions i and vehicle speed j ij , the calculation formula is:

[0149]

[0150] Among them, T s is the actual running time, which can be set according to the actual service life of the armored vehicle, m is the index, generally 3 to 9;

[0151] Step 203, the comprehensive operating condition specification spectrum obtained according to the method for constructing the armored vehicle comprehensive operating condition vibration spectrum in Embodiment 1 and the piecewise acceleration pro...

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Abstract

The invention discloses a method for constructing a comprehensive working condition vibration spectrum of an armored vehicle and a method for constructing a long-life test spectrum of an armored vehicle, and relates to the field of data processing method. The method for constructing the comprehensive working condition vibration spectrum comprises the steps: obtaining a first relation and a second relation among a single working condition actual measurement spectrum, a first reserve coefficient and the comprehensive working condition actual measurement spectrum; obtaining the relation between the first reserve coefficient and the comprehensive working condition actual measurement spectrum according to the first relation and the second relation; training a first RBF neural network to obtain a current first reserve coefficient; obtaining a first relation and a second relation among the single working condition standard spectrum, the second reserve coefficient and the comprehensive working condition standard spectrum; obtaining the relation between the second reserve coefficient and the comprehensive working condition standard spectrum according to the first relation and the second relation; training a second RBF neural network to obtain a current second reserve coefficient; and obtaining a reserve coefficient according to the current first and second reserve coefficients, thereby obtaining an actual comprehensive working condition actual measurement spectrum and a standard spectrum. According to the invention, the accuracy is improved, and a real vibration environment can be simulated more effectively.

Description

technical field [0001] The invention relates to the technical field of armored vehicle vibration spectrum data processing methods, in particular to a method for constructing armored vehicle comprehensive operating condition vibration spectrum and long-life test spectrum. Background technique [0002] Armored vehicles are military vehicles that can be driven on various roads and are mainly used for transportation, reconnaissance and mobility attacks. Therefore, the vibration level not only affects the fatigue and work efficiency of combatants, but also affects the weapons installed on the vehicles. attack accuracy. If the vehicle vibrates too much, it will shorten the service life of the device, and even cause damage to the device. [0003] In order to analyze the vibration performance of armored vehicles, test methods are mainly used to test the structural strength and durability of armored vehicle frames. For this reason, long-life simulation tests are usually used for qu...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/17G06F30/27G06F17/18G06F119/02
CPCG06F30/15G06F30/17G06F30/27G06F17/18G06F2119/02Y02T90/00
Inventor 侯军芳王和平张晶张梅梁媛媛李娟邓刚
Owner UNIT 63966 OF PLA
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