DESIGN AND SIMULATION FOR WINDING PATTERN OF DRY FIBER REINFORCED RUBBER EXPANSION JOINT

Abstract

Abstract: Rubber expansion joint, as a kind of free telescopic elastic compensatory components, has good corrosion resistance, high impact strength and excellent damping noise reduction features compared with metal ones that extensively used in home at present. Expansion joints are mainly used in rigid piping systems. Conventional production using prefabricated fiber plies manual or semi-automatic technologies, do not allow optimal orientation of the reinforcement material. Without controlling the orientation of the reinforcement, it is not possible to control the shape while pressurized. Using dry fiber reinforced rubber expansion joints can fully play the role of fiber and is able to achieve automatic winding, improving efficiency, quality, and product consistency. This article analyzed the principle of dry fiber winding. Then, a set of equations can be obtained that describe these geodesic isotensoid fiber path shapes by combining netting theory and the membrane theory and establish the model of single bellow isotensoid expansion joint in terms of equations. Next, this article determines geodesic paths of model surface by numerical techniques and finally carries out the simulation according to the designed winding pattern. From simulation results, we can see stability and no obvious phenomenon of overhead. This design method of dry rubber expansion joint filament winding plays a very important role for the actual production in the future.

Key words: rubber expansion joint, winding, pattern design, dry fiber, geodesic path

CLC Number:

TB332

YOU Bo, WANG Yan, XU Jia-zhong, ZHANG Xi. DESIGN AND SIMULATION FOR WINDING PATTERN OF DRY FIBER REINFORCED RUBBER EXPANSION JOINT[J]. Fiber Reinforced Plastics/Composites, 2016, 0(10): 15-19.

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