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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

Inactive Publication Date: 2006-10-11
欧进萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-point bending beam type large-scale material damping test device to solve the problem that it is impossible to test the damping performance of large-scale materials in the field of civil engineering

Method used

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

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specific Embodiment approach 1

[0011] Specific implementation mode one: combine figure 1 , figure 2 Describe this embodiment. This embodiment consists of two bases 2 placed relatively parallel and fixedly connected to the ground, a bracket 1 located between the two bases 2 and fixedly connected to the ground, an excitation system, a measurement system, and a three-point bending beam The device is composed of; the three-point bending beam device is composed of two hinge supports, a three-point bending beam 5-2, a pressure beam 5-3, a loading head, and a connector 5-5; the excitation system is composed of a signal generator 3-1, a power amplifier 3-2, and an exciter 3-3 fixedly connected to the ground; the measurement system is composed of a force sensor 4-1, a displacement sensor 4-2, a charge amplifier 4-3, and a voltage amplifier 4-4. The data collector 4-5 consists of a hinge support placed on each base 2, and one end of the three-point bending beam 5-2 is fixedly mounted on one of the two hinge support...

specific Embodiment approach 2

[0014] Specific implementation mode two: combination figure 1 Describe this embodiment, each hinge support in the two hinge supports of this embodiment is respectively made up of lower semicircular member 5-1-1, upper semicircular member 5-1-2, screw rod 5-1- 3. The nut 5-1-4 is composed; the upper semicircular member 5-1-2 is placed directly above the lower semicircular member 5-1-1, and the arc surface of the upper semicircular member 5-1-2 Placed opposite to the arc surface of the lower semicircular member 5-1-1, the two ends of the three-point bending beam 5-2 are respectively mounted on the upper semicircular member 5-1-2 of each hinge support Between the upper semicircular member 5-1-2 and the lower semicircular member 5-1-1 through the screw rod 5-1-3 and the nut 5-1-4 Fixed connection. In order to realize the adjustable vertical dimension of the three-point bending beam 5-2, each hinge support is connected with a screw 5-1-3 and fixed with a nut 5-1-4. In order to r...

specific Embodiment approach 3

[0015] Specific implementation mode three: combination figure 1 , image 3 , Fig. 4 illustrates the present embodiment, and the loading head of the present embodiment is made of upper semicircular steel bar 5-4-2, lower semicircular steel bar 5-4-1, connecting screw rod 5-4-3, connecting nut 5-4-4 composition; the upper semicircular steel bar 5-4-2 is placed directly above the lower semicircular steel bar 5-4-1, and the arc surface of the upper semicircular steel bar 5-4-2 and The arc surfaces of the lower semicircular steel bar 5-4-1 are relatively placed, and the middle section of the three-point bending beam 5-2 is mounted on the upper semicircular steel bar 5-4-2 and the lower semicircular steel bar 5-4-2. Between the bar 5-4-1, the upper semicircular steel bar 5-4-2 and the lower semicircular steel bar 5-4-1 are fixed by connecting screw rod 5-4-3 and connecting nut 5-4-4 Connection, the lower end surface of the lower semicircular steel bar 5-4-1 has an internal threade...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/38G01M5/00
Inventor 欧进萍刘铁军梁超锋李冀龙
Owner 欧进萍
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