Vibration damper with viscous damper structure for structural testing machine

Abstract

The present invention relates to a vibration damper with a viscous damper structure for a structural testing machine, and belongs to the field of vibration damping control. The vibration damper comprises a viscous damper, an elastic segment support, a connecting steel plate and a bolt. A viscous damper device is arranged between the lower beam and the base of the structural testing machine; the viscous damper devices are symmetrically arranged around a specimen; the viscous damper device is composed of two parts of the viscous damper and the elastic segment support through the steel plate andthe bolt; the viscous damper device and the specimen are co-stressed until a load is downloaded; and a force sensor is arranged at the lower end of the specimen for measuring the load on the specimen.The invention is provided with the viscous damper device in the test process of a large structural testing machine, and can avoid the vibration problem in the testing machine and the surrounding environment caused by the brittle failure of the specimen. The invention has the advantages of not sharing the load applied by the testing machine and recycle utilization.

Description

technical field [0001] The invention relates to a vibration reduction device of a viscous damper structure testing machine, which is suitable for body vibration and environmental vibration caused by the damage of a brittle test piece during the use of a large structure testing machine, and belongs to the field of vibration reduction control. Background technique [0002] Today, as building structures become larger and larger, large-scale structural testing machines are used more and more widely in the field of construction, and have become indispensable testing equipment for universities and research institutes. The vibration of the testing machine and the surrounding buildings caused by the damage of the brittle test piece during the use of the large-scale structural testing machine is particularly obvious. Strong vibration will cause many problems, such as damaging the performance of the testing machine itself; endangering the surrounding staff and buildings around the test...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the locking device is installed on the upper and lower beams of the testing machine, which has a certain vibration reduction effect, but the vibration reduction range is relatively limited, and the testing machine will still vibrate when the brittle specimen is damaged, so the vibration reduction device can be installed in Around the loaded specimen

[0006] The advantage of the present invention is that the viscous damper device hardly bears force during loading, provides supporting force when the test piece is damaged, and can be recycled. The overall vibration reduction effect of the testing machine is better, but the disadvantage is that the device will occupy the test space

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