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Load spectrum processing method and device, equipment and storage medium

A processing method and load spectrum technology, applied in geometric CAD and other directions, can solve problems such as affecting the equivalence of equivalent loads, reducing the accuracy of durability test results, not considering the phase relationship of multiple loads, etc., to achieve a simplified process, improve Equivalence, time-saving effect

Pending Publication Date: 2022-04-08
中汽检测技术有限公司 +1
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Problems solved by technology

[0003] However, in the prior art mentioned above, in the process of transforming the random load spectrum into the block spectrum, there is a problem that the impact of the maximum value of the load is ignored because the influence of the average value is not considered, but the damage caused by the maximum load is The largest; or when dealing with the simultaneous loading of multiple loads, the phase relationship of multiple loads is not considered, which affects the equivalence of the equivalent load input in the durability test and reduces the accuracy of the durability test results

Method used

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  • Load spectrum processing method and device, equipment and storage medium
  • Load spectrum processing method and device, equipment and storage medium
  • Load spectrum processing method and device, equipment and storage medium

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Embodiment 1

[0059] Please refer to figure 1 , this embodiment proposes a load spectrum processing method, and the equivalent load block spectrum method will be described in detail below.

[0060] 101. Collect multiple sets of time-domain loads of parts in the automobile;

[0061] In order to verify the fatigue performance of automotive structural parts, it is necessary to carry out the fatigue durability test of the parts during the development process, and it is also necessary to assemble the parts on the prototype vehicle for the road test on the proving ground. During the part fatigue endurance test, the accuracy of the input load directly affects the validity of the test. In the initial development stage of parts, the main sources of input loads include: empirical loads, virtual extraction of loads under standard conditions, or extraction of virtual road loads. After the assembly of the prototype vehicle is completed, the input load comes from the load spectrum collection of the tes...

Embodiment 2

[0150] Please refer to Figure 11 , this embodiment proposes a load spectrum processing device 100, the load spectrum processing device 100 includes:

[0151] The collection module 110 is used to collect the load spectrum of parts in the automobile, wherein the load spectrum includes multiple groups of time domain loads;

[0152] The statistical module 120 is used to perform cyclic statistics on the time domain load by using the four-point method to obtain the amplitude of the load range and the number of cycles;

[0153] The determination module 130 is configured to count the time-domain load through the level, obtain the average value of the equivalent load corresponding to the time-domain load, and calculate the load according to the load range amplitude, the number of cycles and the average value to determine the preliminary equivalent load block spectrum;

[0154] The correction module 140 is configured to correct the preliminary equivalent load block spectrum to obtain...

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Abstract

The invention provides a load spectrum processing method, device and equipment and a storage medium, and the method comprises the steps: collecting a load spectrum of an automobile part, carrying out the cyclic statistics, level crossing counting and other processing of a time domain load in the load spectrum, and generating a preliminary equivalent load block spectrum; and respectively calculating pseudo damage values of the load spectrum and the initial equivalent load block spectrum, and correcting the initial equivalent load block spectrum according to the pseudo damage values to obtain the equivalent load block spectrum. According to the technical scheme, when the random load spectrum is converted into the equivalent load block spectrum, the influences of the average value and the maximum value of the loads and the phase relation among the multiple loads are considered, the equivalence of the equivalent loads loaded in the automobile part durability test is improved, and meanwhile the accuracy of the durability test result is improved; the fatigue endurance test process of automobile parts is simplified, and the time cost is saved.

Description

technical field [0001] The invention relates to the technical field of automobile durability tests, in particular to a load spectrum processing method, device, equipment and storage medium. Background technique [0002] In order to verify the fatigue performance of automotive structural parts, parts fatigue durability tests are required during the development process, and parts need to be assembled on prototype vehicles for proving ground road tests. During the part fatigue endurance test, the accuracy of the input load directly affects the validity of the test. Therefore, it is necessary to convert the random load spectrum into a block spectrum composed of several sine wave load spectra for loading, because the block spectrum has the characteristics of simple loading and short test time; this process of transforming the random spectrum into a block spectrum by a certain method called load equivalence. [0003] However, in the prior art mentioned above, in the process of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15
Inventor 袁文强李妮妮辛强郭鹏鹍周倩瑶姜洋王秋敏
Owner 中汽检测技术有限公司
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