Method for measuring normal rigidity of large contact interface by completely considering plastic influence
A contact interface, normal stiffness technology, applied in the field of laser scanning and measurement, to achieve the effect of breaking through the limitations of use
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[0048] In order to verify the method of the present invention: the method of measuring the normal stiffness of the large contact interface that fully takes into account the influence of plasticity, the existing direct loading measurement method and ultrasonic measurement method are used as comparison objects. Wherein, the numerical value of ultrasonic measurement method is obtained by the experiment that people such as Gonzalez-Valadez M, (see literature Gonzalez-Valadez M, Baltazar A, Dwyer-Joyce R S.Study of interfacialstiffness ratio of a rough surface in contact suing a spring model[ J].Wear, 2010,268:373-379); The numerical value of directly loading measurement method and the inventive method obtains by finite element simulation, and its model is as figure 1 shown. In order to make an effective comparison with the ultrasonic measurement method, the size and material of the two rough bodies are consistent, and one of the contact surfaces is a smooth plane. The relevant par...
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