A Quantitative Evaluation Method of Vibration Aging Effect
A technology of vibration aging and evaluation methods, which is applied in the direction of complex mathematical operations, etc., and can solve problems such as the inability to realize online quantitative evaluation of vibration aging effects, and the inability to reveal the influence rules of vibration aging effects independently of process parameters.
Inactive Publication Date: 2017-10-31
SHANGHAI MARITIME UNIVERSITY
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[0004] In order to overcome the shortcomings that the existing evaluation methods of vibration aging effect cannot realize the online quantitative evaluation of vibration aging effect and the independent and interactive effects of process parameters on the vibration aging effect cannot be revealed in the existing evaluation method system. The present invention proposes a quantitative evaluation method of vibration aging effect, that is, a quantitative evaluation method of vibration aging effect based on multivariate function approximation theory
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[0028] With reference to accompanying drawing, further illustrate the present invention:
[0029] A quantitative evaluation method for vibration aging effects, including the following steps:
[0030] (1), determine the process parameters that affect the effect of vibration aging to eliminate residual stress, mainly including excitation frequency f, excitation amplitude A and excitation time t, these three process parameters are the input terminals of the quantitative evaluation function model; vibration aging The effect F of eliminating residual stress is the output end of the quantitative evaluation function model; the quantitative evaluation function model F(f, A, t) is established, that is, the quantitative evaluation function model of the process parameter input end and the vibration aging effect output end is established.
[0031] The specific implementation details are: the schematic diagram of the quantitative evaluation function model for vibration aging to eliminate r...
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The invention relates to a quantitative evaluation method for the vibration aging effect. The quantitative evaluation method for the vibration aging effect comprises the steps that firstly, a quantitative evaluation functional model which considers the excitation frequency f, the excitation amplitude A and the excitation time t at the same time is established through a multivariate function approximation theory; secondly, the technological parameters including the excitation frequency f, the excitation amplitude A and the excitation time t in the vibration aging process are collected in real time, and non-dimensional processing is conducted on the three technological parameters; thirdly, the non-dimensional numerical values of the three technological parameters are substituted into the quantitative evaluation functional model, and then online quantitative evaluation can be conducted on the vibration aging effect; and finally, based on the quantitative evaluation functional model, the partial derivative of each technological parameter and the partial derivatives of all the technological parameters are worked out, and the law of the influences of the independent action and the interaction of the technological parameters on the vibration aging residual stress relieving effect is disclosed. The quantitative evaluation method for the vibration aging effect has the advantages that online quantitative evaluation of the vibration aging effect can be achieved, and the law of the influences of the independent action and the interaction of the technological parameters on the vibration aging effect can be disclosed.
Description
technical field [0001] The invention relates to the technical field of vibration aging, in particular to a quantitative evaluation method for vibration aging effects. technical background [0002] The evaluation of vibration aging effect is one of the key issues in the field of vibration aging technology research. The so-called vibration aging effect refers to the effect of vibration aging to eliminate residual stress. At present, the evaluation methods of vibration aging effect mainly include: parameter curve method, residual stress measurement method and precision stability detection method. (1) Parameter curve method: The parameter curve method is summarized according to the regular changes in parameters during the vibration aging process, and can conduct online qualitative evaluation of the effect of vibration aging technology. The evaluation criteria used mainly include: After vibration aging treatment The resonance peak of frequency sweep curve is higher than that bef...
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IPC IPC(8): C21D10/00C22F3/00G06F17/15
CPCC21D10/00C22F3/00G06F17/15
Inventor 顾邦平严小兰胡雄黄婉娟赖金涛张帆周冶季霞
Owner SHANGHAI MARITIME UNIVERSITY