Three-point bending beam type apparatus for big size material damping test

A three-point bending beam and material damping technology, which is applied in the direction of measuring devices, elastic testing, machine/structural component testing, etc., can solve the problems of inability to test the damping performance of large-scale materials, achieve simple structure, improve measurement accuracy, The effect of easy installation
CN1844887AInactive Publication Date: 2006-10-11欧进萍
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
欧进萍
Publication Date
2006-10-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a damping tester of three-point bended beam large-scale material, which can solve the problem of present device that can not test the damping property of large-scale material. Wherein, two ends of three-point bended beam (5-2) are fixed on each hinge base of base; each hinge base is vertically fixed via press beam (5-3); the middle part of three-point bended beam (5-2) is fixed with a load head; the force sensor (4-1) is connected to the load head, the actuator (3-3) and the charge amplifier (4-3); the power amplifier (3-2) is connected to the actuator (3-3) and the signal generator (3-1); the displacement sensor (4-2) is connected to the voltage amplifier (4-4); the charge amplifier (4-3) and the voltage amplifier (4-4) are connected to the data collector (4-5). The invention can complete the damping test of large-scale material.
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Description

technical field

[0001] The invention relates to a test device for testing the damping performance of large-scale materials in the field of civil engineering, in particular to a three-point bending beam type large-scale material damping test device. Background technique

[0002] At present, there are mainly three methods for dynamic mechanical testing of the damping characteristics of viscoelastic damping materials: free vibration method, resonance method, and forced vibration non-resonance method. The damping performance of viscoelastic materials is closely related to the working frequency. The free vibration method and the resonance method can only test the damping characteristics near the natural frequency of the structure or component, so the forced vibration non-resonance method is generally used, such as the viscoelastic spectrometer (Q800, VA4000), Dynamic Mechanical Analyzer (DMA), etc. A common disadvantage of these instruments is the inability to test the damping p...

Claims

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