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A force measurement device for a wind tunnel test model

A force measuring device and wind tunnel test technology, which is applied in the resistance, bending moment and torque component measurement device of the rigid model of the wind tunnel test, and the lift field. It can solve the problems of large cantilever, large bending moment, and balance range mismatch, etc., to achieve The effect of reliable test results, increased model size, and reduced thickness

Inactive Publication Date: 2016-11-23
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] The technical problem mainly solved by the present invention is, for some rigid models of wind tunnel tests (such as segmental models such as bridge girders, bridge towers, arch ribs, high-rise, high-rise building structure models, ocean platform models, large ship models), in When a single balance is used for force measurement, it is often in the dilemma of large cantilever, large bending moment, and balance range mismatch. A force measurement method that places the balance inside the model is proposed

Method used

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  • A force measurement device for a wind tunnel test model

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Embodiment Construction

[0012] The specific implementation will be described below by taking the cylindrical model as an example in conjunction with the accompanying drawings and technical solutions.

[0013] When making the test model 1, fix and install the rigid partition 2 at an appropriate position inside it, rigidly connect the rigid partition 2 and the multi-component balance 3 through bolts (easy to disassemble), and rigidly connect the multi-component balance 3 to the balance through bolts On the support 4 (thickness 4-5mm, the plane size matches the balance), the balance support 4 is welded on the top of the circular steel pipe 5 (the diameter can be in the range of 3-5cm, and the wall thickness can be in the range of 2-5mm) , the other end of the steel pipe 5 is welded on the steel pipe base 6, and the steel pipe base 6 and the foundation can be connected by bolts.

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Abstract

The invention provides a force measuring device for a wind tunnel test model. The force measuring device is fixed and installed with a rigid partition near the middle of the measured model, and the rigid partition is rigidly connected to the multi-component balance through bolts; the multi-component balance is rigidly connected to the balance support through bolts, and its plane size is the same as The balance is matched; the balance support is welded on the top of the steel pipe, and the other end of the steel pipe is welded to the base, and the base is connected to the foundation with bolts to fix the whole device. It is characterized in that the multi-component force measuring balance is placed in a suitable position inside the model and rigidly connected with the model, thereby reducing the cantilever length of the test model and making full use of the measuring range of the balance, thereby increasing the size of the model. The purpose of improving the test wind speed and test accuracy.

Description

technical field [0001] The invention relates to a device for measuring resistance, lift, bending moment and torque components of a rigid model of a wind tunnel test. Specifically, the traditional method of connecting the end of the model (generally the bottom) to the top of a multi-component force measuring balance is changed, and the The balance is placed in a suitable position inside the model, so that the model and the balance can be consolidated, so that the balance can not only be protected from wind load, but also the cantilever length of the model can be reduced, the rigidity of the model can be improved, and the range of each component of the balance can be fully used, and finally the improvement can be realized. The purpose of testing wind speed and testing accuracy. Background technique [0002] The force measurement of rigid models such as bridges, buildings, and ships is a common type of wind tunnel test, and the multi-component balance is the main instrument for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01M9/08
Inventor 许福友袁良东葛晓萌张哲
Owner DALIAN UNIV OF TECH
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