Abstract
Usually, development of automobile brake hose and power steering hose has been realized through investigating several actual prototype hoses experimentally. Recently, high durability for brake hose has been required because periodic renewing the brake hoses has not been requested anymore. In this study, three-dimensional FEM analysis has been applied to the crimped portion of hydraulic brake hose in order to investigate the effects of manufacturing errors upon the sealing performance. In order to evaluate the sealing performance, the normal stress σr appearing between the inner rubber and nipple is mainly considered. Then, the sealing performance is investigated when the manufacturing error is included for the crimped portion of hydraulic brake hose. It is found that maximum stress between the nipple and inner rubber decreases by less than 30% when the manufacturing errors are smaller than the upper limit of tolerance. It may be concluded that the error may causes deterioration of sealing performance of hydraulic brake hose.
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