Design and Calculation Method of Composite Housings for New Generation Magnetorheological Devices

Abstract

By designing of special purpose drive systems, the construction materials must possess the functional properties, for example, transmission of magnetic and electromagnetic radiation or magnetic shielding being important properties. The control of characteristics in the magnetorheological (MR) systems occurs due to exposure to external electromagnetic fields on the working environment. It is obvious that in the MR drive systems, structural elements for installing of electromagnetic control units must have transmission properties of electromagnetic waves and metal is not applicable to these structural elements. Using of polymer composites is a promising solution to the problem. Particularly, high strength properties have fiber polymer composites, which are able to withstand mechanical stress that exceeds allowable stresses for preserving integrity of steel elements. The fiber polymer composites can withstand the high tensile and compressive stresses, but it is only by stresses, which are attached in axial direction of composite fiber, and the ability to resist loading in the radial or tangential direction significantly concedes to values of allowable axial stresses. MR devices by exploitation under multi-directional dynamic loads need the use of composite materials with more isotropic material properties (strength properties). In the research, this problem was solved and the authors made a new fiber polymer composite material, which has significantly less anisotropy in strength properties. The calculation method of strength properties of this new fiber polymer composite material is proposed.