Method for reducing road spectrum into Block Cycle
A block cycle and matrix technology, applied in the field of road spectrum processing, can solve the problems of many personal experience factors, low resource utilization, low test accuracy, etc., and achieve the effect of saving resources, simplifying the calculation process, and reducing the test time.
Inactive Publication Date: 2014-12-10
NINGBO TUOPU GROUP CO LTD
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Problems solved by technology
Although the first method above can quickly find the fatigue failure area, the accuracy of the test is low, there are many personal experience factors, and the subjectivity is too strong; while the second method can truly reflect the actual loading conditions of the parts, but the test period Longer, usually more than one month per cycle, high cost and low resource utilization
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[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] like figure 1 As shown, a method for reducing the road spectrum to a pattern block circulant matrix includes the following steps:
[0029] ① Check the road spectrum and obtain the load road spectrum suitable for laboratory and simulation analysis;
[0030] ② Create a damage matrix based on the load road spectrum, and judge the phase relationship of the three channel loads in the load road spectrum at the same time, and divide the load road spectrum into the load road spectrum with phase relationship and the load road spectrum without phase relationship;
[0031] ③On the basis of the damage matrix, the damage matrix of the load spectrum with phase relationship and the damage matrix of the load spectrum without phase relationship are respectively established;
[0032] ④Use the method of damage equivalent to edit the damage matrix of the...
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The invention discloses a method for reducing a road spectrum into a Block Cycle. The method comprises the following steps of: checking a road spectrum, creating a damage matrix according to a load road spectrum, judging a phase relation of three channel loads in the load road spectrum, and dividing the load road spectrum into a load road spectrum with the phase relation and a load road spectrum without the phase relation; on the basis of the damage matrix, respectively creating a damage matrix for the load road spectrum with the phase relation and a damage matrix for the load road spectrum without the phase relation; editing the damage matrix for the load road spectrum with the phase relation into a multi-axis Block Cycle matrix, and editing the damage matrix for the load road spectrum without the phase relation into a single-axis Block Cycle matrix; combining the multi-axis Block Cycle matrix and the single-axis Block Cycle matrix to obtain a Block Cycle matrix; counting the obtained Block Cycle matrix, and setting a total circulation frequency of the Block Cycle matrix according to a counted result; and obtaining a final Block Cycle matrix after circulation is finished. The method has the advantages that the authenticity of the road spectrum is effectively guaranteed, the test time is greatly shortened, the resources are saved, and the cost is reduced.
Description
technical field [0001] The invention relates to a road spectrum processing method, in particular to a method for reducing the road spectrum into a pattern block circular matrix. Background technique [0002] Road spectrum, that is, road pavement spectrum, refers to the power spectral density curve of road surface roughness. For the automotive industry, many components on the car will generate dynamic stress, cause fatigue damage, and form fatigue fracture. Therefore, the collection and processing of the road spectrum provides reliable data support for engineers in the laboratory and multi-body dynamics simulation analysis, so that engineers can make accurate predictions and judgments on the fatigue life of automotive components. [0003] Generally speaking, the collected road spectrum needs to be processed before it can be applied to the simulation analysis and laboratory, so how to scientifically and realistically process the road spectrum will directly affect the consiste...
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IPC IPC(8): G06F17/50
Inventor 徐驰屠小峰段小成
Owner NINGBO TUOPU GROUP CO LTD