A test device for dynamic characteristics of extrusion flow of capsule magnetorheological fluid

Abstract

The invention discloses a test device for dynamic characteristics of extrusion flow of capsule magneto-rheological fluid, which comprises a flexible capsule, the upper edge of the flexible capsule is clamped and sealed by an upper end cover and an upper guide seat installed coaxially, and the lower edge of the flexible capsule is The edge is clamped and sealed by the coaxially installed lower end cover and the lower guide seat, and the outer side of the flexible bag and the inside of the outer cylinder are provided with excitation coils; a working cavity is formed between the flexible bag, the upper end cover and the lower end cover, and injected Magneto-rheological fluid or other liquids to be tested; a guide cavity is formed between the flexible bladder, the upper guide seat and the lower guide seat to guide the extrusion deformation of the flexible bladder. The invention can be used to test the dynamic characteristics of magnetorheological fluid extrusion or extension flow, especially the extrusion or extension flow dynamic characteristics of magnetorheological fluid under high-frequency excitation; it can also be used for other fluids with equal volume or equal area Testing of extrusion flow dynamics.

Description

technical field [0001] The invention belongs to the field of research on dynamic characteristics of extrusion flow of non-Newtonian fluid, and in particular relates to a test device for dynamic characteristics of extrusion flow of capsule magnetorheological fluid. Background technique [0002] Squeeze flow is widely used in motors, bearings and lubrication in modern industry. As a smart material with adjustable rheological properties, magnetorheological fluid is also widely used in various fields. Magneto-rheological fluid squeeze mode generates higher pressure than other modes and can be used to isolate and damp vibrations with small and large loads. At present, the research on the extrusion rheological characteristics of magnetorheological fluids is mostly limited to the research on the dynamic characteristics under static, quasi-static or low-frequency excitation, and the research on the dynamic characteristics and its mechanism under high-frequency excitation is not per...

AI Technical Summary

Problems solved by technology

At present, the research on the extrusion rheological characteristics of magnetorheological fluids is mostly limited to the research on the dynamic characteristics under static, quasi-static or low-frequency excitation, and the research on the dynamic characteristics and its mechanism under high-frequency excitation is not perfect enough. The characteristics and mechanism under high-frequency excitation need to be solved urgently

Images