Experiment device for measuring mechanics parameters of viscous-elastic material by using tension-compression method

Abstract

The invention provides an experiment device for measuring mechanics parameters of a viscous-elastic material by using a tension-compression method. The experiment device comprises a shell, a force sensor, an accelerator sensor and a vibration exciter, wherein the vibration exciter is placed within a lower shell; a pre-tightening screw rod is mounted on an upper shell; a locating sliding block can be driven by the pre-tightening screw rod; the force sensor and an auxiliary gasket slide up and down; the auxiliary gasket and an accelerator sensor packaging cover plate are used for clamping a test piece; the acceleration sensor is placed within an acceleration sensor packaging lower shell; and the acceleration sensor packaging lower shell is fixedly connected with the vibration exciter. Compared with the traditional introducing device, the experiment device for measuring mechanics parameters of the viscous-elastic material by using the tension-compression method has the advantages of simple structure, high testing accuracy, wide measuring frequency bandwidth and the like on the basis of a lag phase frequency principle. High coaxiality is obtained among the locating sliding block, the sensor, the test piece and the vibration exciter and reliable surface contact is realized, so that the excitation of the vibration exciter is sufficiently transmitted to the test piece; meanwhile, the sensor can be ensured to reliably measure relevant physical quantity, so that the system obtains high measuring accuracy.

Description

technical field [0001] The invention relates to the technical field of testing parameters of viscoelastic materials, in particular to an experimental device for measuring mechanical parameters of viscoelastic materials using a tension-compression method. Background technique [0002] At present, the measurement equipment for the mechanical parameters of viscoelastic damping materials currently used by relevant domestic units mainly includes the Metravib viscoelastic analyzer imported from France and the B&K3550 complex modulus test system imported from Denmark. These two kinds of systems have defects such as high price and complex usage methods. Among them, the Metravib viscoelastic analyzer is designed based on the principle of temperature-frequency equivalent, which is an indirect measurement method, and the upper limit of the measurement frequency is generally lower than 500Hz; The mechanical parameters of the damping material are obtained, but it is difficult for the sy...

AI Technical Summary

Problems solved by technology

These two systems have defects such as high prices and complicated methods of use.

Among them, the Metravib viscoelastic analyzer is designed based on the principle of temperature-frequency equivalent, which is an indirect measurement method, and the upper limit of the measurement frequency is generally lower than 500Hz; The mechanical parameters of the damping material are obtained, but it is difficult for the system to obtain the high-order (third and fourth-order) resonance peaks of the specimen during the actual measurement process, and the upper limit of the measurement frequency is lower than 1kHz

Images