Measuring device of rigidity and damping of tangential contact

A technology of damping measurement and contact stiffness, which is applied in the field of dynamic measurement, can solve problems such as unmeasured contact damping, achieve reliable measurement, ensure feasibility and reliability, and reduce impact

Inactive Publication Date: 2010-03-10
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Dwyer-Joyce et al. wrote "Measurement of the Stiffness of Joints in Graphite Brick Assembly" in the 215th issue of the Journal of Mechanical Engineering Science, pointing out that the contact area can be measured by ultrasonic method, and then the contact stiffness can be measured indirectly, but this method is the same as the direct method Contact damping not measurable

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  • Measuring device of rigidity and damping of tangential contact

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Embodiment Construction

[0011] The following is a detailed description of the embodiments of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0012] Such as figure 1 As shown, this embodiment includes: a test frame 1, an excitation application device 2, a measurement device 3 and a loading device 4, wherein: the measurement device 3 and the loading device 4 are respectively fixedly arranged in the test frame 1, and the excitation application device 2 is fixedly arranged on the The top of the test frame 1 is facing the sample 5 to be tested, the measuring device 3 is connected with the loading device 4 , and the loading device 4 is arranged at the bottom of the test frame 1 .

[0013] The excitation application device 2 includes: a fine-tuni...

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Abstract

The invention relates to a measuring device of rigidity and damping of tangential contact, belonging to the technical field of dynamics measurement and comprising a testing frame, an excitation applying device, a measuring device and a loading device, wherein the measuring device and the loading device are respectively and fixedly arranged in the testing frame; the excitation applying device is fixedly arranged above the testing frame and corresponds to a sample to be measured; the measuring device and the loading device are connected; and the loading device is arranged at the bottom of the testing frame. The measuring device adopts a mode that the same tested samples are respectively arranged at the two ends to clamp another suspended testing sample, so as to lead a vibrational model to be simple, thus guaranteeing feasibility and reliability of dynamic method analysis, realizing reliable measurement of rigidity and damping of tangential contact, easily controlling the size of pretightening force and contact area, and furthest reducing the influence of vibration to measurement.

Description

technical field [0001] The invention relates to a device in the technical field of dynamic measurement, in particular to a tangential contact stiffness and damping measurement device. Background technique [0002] Bonding interfaces are the most common and complex part of any mechanical system. Because the coupling of various forces or moments and energy loss are often involved at the bonding interface, the design of the bonding interface will be directly related to the friction, wear and vibration in the system, thus affecting the performance and reliability of the entire system. sex. In the process of dynamic modeling of joint surfaces, the most important parameters are contact stiffness and contact damping. The accuracy of these parameters will directly affect the reliability of modeling and simulation results. Therefore, the measurement of the contact stiffness and damping of the bonded interface has very clear engineering significance. [0003] At present, there are ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/12G01N29/22G01N29/34
Inventor 史熙王濛朱昌明
Owner SHANGHAI JIAO TONG UNIV
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