Method and device for identifying mechanical property of damping coating

Abstract

The invention relates to a method and device for identifying the mechanical property of a damping coating, and the damping coating is coated on the inner spherical surface of an outer ring of a knuckle bearing. The method comprises the following steps: obtaining the attribute of a composite structure formed by the damping coating and the inner spherical surface of the outer ring of the knuckle bearing; obtaining a simulation loading curve index and a simulation maximum indentation depth for representing the composite structure through finite element simulation; constructing a function expression of the relationship between the mechanical property parameters of the damping coating and the analog loading curve index and the analog maximum indentation depth; substituting the test loading curve index and the test maximum indentation depth of the composite structure obtained through the nano-indentation test into the function expression to obtain the mechanical property parameters of the damping coating. Finite element simulation and nano-indentation test can be carried out on the composite structure of the damping coating and the inner spherical surface of the outer ring of the knucklebearing, the matrix effect of the inner spherical surface of the outer ring is eliminated, the mechanical property parameters of the damping coating are identified, the operation is simple, and the accuracy is high.

Description

Technical field [0001] The present disclosure relates to the technical field of material mechanics, and in particular, to a method and device for identifying the mechanical properties of a vibration damping coating. Background technique [0002] As a spherical sliding bearing, the sliding contact surface includes an inner spherical surface and an outer spherical surface. It can rotate and swing at any angle during movement. It is usually used for low-speed swing motion and low-speed rotation, or in a certain angle range. Tilt movement inside. Therefore, joint bearings are widely used in mechanical equipment, aerospace, transportation, and energy power, especially in the fields of aircraft landing gear, aircraft and engine motion regulating mechanisms, and industrial robots. With the continuous promotion of the application of joint bearings, the requirements for vibration reduction of joint bearings in all walks of life are getting higher and higher. At present, the more commonly...

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Problems solved by technology

However, the above method needs to test the matrix + coating composite structure and the matrix separately, and the operation steps are relatively cumbersome.

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