Magnetic control fluid mechanical property test device under high-speed shearing mode

Abstract

The invention relates to a magnetic control fluid mechanical property test device under a high-speed shearing mode. The magnetic control fluid mechanical property test device comprises a base and a supporting frame on the base, a liquid storage cylinder barrel is supported on the base, and connected with a torque sensor used for detecting and outputting a torque value, a magnetic field generator used for generating a test magnetic field is arranged on the liquid storage cylinder barrel, the liquid storage cylinder barrel is filled with magnetic control fluid for testing, a high-speed motor is arranged above the liquid storage cylinder barrel and suspended above the liquid storage cylinder barrel through a lifting device on the supporting frame, a rotary shaft of the high-speed motor extends vertically and downwards and is fixedly connected with a test clamp, the upper end of the test clamp is fixedly connected with the rotary shaft of the high-speed motor, and the lower end of the test clamp stretches into the magnetic control fluid in the liquid storage cylinder barrel. Through the device, a magnetic control fluid mechanical property test can be completed at high shearing speed under the action of the magnetic field.

Description

technical field [0001] The invention belongs to the field of material performance testing, and in particular relates to a testing device for magnetron hydrodynamic properties in a high-speed shear mode. Background technique [0002] Magnetron fluid is an intelligent dispersion material composed of soft magnetic suspension phase, organic suspension medium and additives. Under the action of an external magnetic field, its viscosity can be adjusted continuously, rapidly and reversibly. The shear yield stress is the magnetic control fluid. One of the main performance parameters of the fluid. It can be widely used in important fields such as building structure vibration control, mechanical system vibration control and weapon system impact control. In the process of developing engineering and practical devices, people must make a reasonable evaluation of the mechanical properties of magnetron fluid. Therefore, the mechanical performance test of magnetron fluid is one of the impo...

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Problems solved by technology

Although people have done a lot of research on the mechanical properties of the magnetron fluid, there are still some problems: for example, the design defect of the shearing mechanism, the radius of rotation cannot be increased, resulting in the limitation of the shear rate and the inability to complete the high shear rate. The test at the cutting rate; the external magnetic field can not make the magnetron fluid reach saturation; the price of the commercial detection instrument is as high as nearly one million yuan, which puts the domestic research in an awkward situation; for the pipeline flow test method, although it can reach a high magnetic field, However, the flow velocity of the magnetic control fluid in the pipeline is low so that the shear rate is limited

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