Device and method for measuring response time of magnetorheological fluid

Abstract

The invention provides a device for measuring the response time of magnetorheological fluid; the device comprises a disc shearing module, a magnetic field generating module, a magnetic guiding module,a motor, a data acquisition module and a processor, wherein the disc shearing module is used for loading and shearing the magnetorheological fluid; the magnetic field generating module is used for generating a magnetic field, wherein the magnetic path of the magnetic field passes through the disc shearing module; and the magnetic guiding module is used for guiding the magnetic field generated bythe magnetic field generating module, so that the magnetic field direction passing through the disc shearing module is perpendicular to the direction of the magnetorheological fluid sheared by the disc shearing module. The device is suitable for measuring the response time of magnetorheological fluid at a high shear rate, and the influence of the magnetorheological fluid splashing and the surfacemeniscus effect on the detection result caused by centrifugal force is avoided, the response time of the magnetorheological fluid can be directly measured and acquired, and the influence of the electrical response time and the mechanical response time of the device on measurement of the response time of the magnetorheological fluid is avoided, and the accuracy and the reliability of the magnetorheological fluid response time obtained by measurement are high.

Description

technical field [0001] The invention relates to the technical field of rheological parameter measurement of magnetorheological fluid, in particular to a device and method for measuring the response time of magnetorheological fluid. Background technique [0002] Magneto-rheological materials are one of the four smart materials, and their application fields are constantly expanding. Magnetorheological fluids can be used to make dampers, shock absorbers, clutches, fixtures, etc. with excellent performance, which can be widely used in automobiles, In the fields of machining, home appliances, medical equipment, construction bridges, aerospace and military. Magneto-rheological fluids can undergo rapid and reversible transitions between solid and liquid states in milliseconds, and their viscosity can maintain continuous and stepless changes, enabling real-time active control with minimal energy consumption. Although the time for the magnetorheological fluid to respond to the magne...

AI Technical Summary

Problems solved by technology

Other existing methods for determining the response time are also to determine the response time of the MR system, rather than the influence time of the MR fluid itself

Images