Method and device for measuring rotation centrode of elastic body by utilizing mechanical device

Abstract

The invention discloses a method and a device for measuring rotation centrode of an elastic body by utilizing a mechanical device. In the invention, the elastic body is placed on a test platform; a rotary arm is mounted on an initial rotation center of the elastic body; an actuator is contact with one end of the rotary arm through a rolling bearing and moment of force is applied; two ends of the rotary arm are respectively connected with two sliding block devices through a pin roll; two extensometers are respectively installed on the sliding block devices and the test platform; when the elastic body is subjected to the effect of the force of moment, and the rotary arm rotates, four extensometers continuously collect the vertical and horizontal displacements of two ends of the rotary arm as time, thus the motion forms of the rotary arm in a two-dimensional space are obtained, and further the motion trails of the rotation center of the elastic body are obtained.

Description

technical field [0001] The present invention relates to a detection method and device, in particular to an elastic body test method and device, in particular to a method and device for measuring the trajectory of the center of rotation of the elastic body over time when the elastic body is subjected to a rotational moment . The invention belongs to the technical field of detecting products according to their physical quantities. Background technique [0002] When an elastic body or an elastic system composed of several elastic bodies is subjected to a rotational moment, its motion mode is rotation + translation, so the rotation center of an elastic body or elastic system is not a fixed point, but a trajectory that changes with time There is both an x-direction offset and a y-direction offset between the end point of the movement and the start point of the movement (on a two-dimensional coordinate plane). [0003] The determination of the trajectory of the elastic body's ro...

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Problems solved by technology

[0004] If non-contact displacement measurement methods are used, such as optical fiber displacement sensors, hysteresis shrinkage displacement sensors, laser displacement sensors or space cameras, etc., the application is limited due to the high cost or specific requirements for the working environment and site. Therefore, it is necessary to design a measurement method and device with strong practicability, low cost, and easy operation and use.

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