Strength and stiffness of a flexible high-pressure spiral hose

Summary We consider a flexible high-pressure rubber hose with separate reinforcing cylinders which each consist of one family of spiralized fibres. The straight tube is radially and axially loaded by an internal pressure. This paper gives an appriximative analysis of the stresses and strains occurring in the rubber and the filaments. Some numerical values could be compared with experimental findings obtained by Trelleborg B.V., Hoogezand. It appeared possible to estimate some unknown parameters, introduced in the approximate calculation model beforehand, so that a reasonable agreement between the theoretical and empirical findings could be attained.