Hose Reinforcement Analysis

Peter John Stroempl

Abstract


Hose design has been neglected as an engineering topic. Hose Technology, 2nd ed., Colin W. Evans, applied science publishers, Essex, England, 1979; has been cited as a design resource. This paper recommends a correction to the Evan’s design equation. The hose nipple and hose tube inside diameter determine the forces the reinforcement has to support.
Introduction: This paper documents how to determine the hydrostatic forces developed within the hose construction.
Method/Approach: The articles use a conventional force balance approach. This paper uses force balances to show how the forces and the reinforcement geometry align to establish equilibrium. The assumption of the hose design equation requires the forces, R, to be equally distributed among the reinforcement strands. The number of strands, N, is empirically determined.
Conclusion: The forces are developed at the wetted surfaces and those forces must be supported by the reinforcement.


Keywords


Hose reinforcement design; Hose internal force balance; Hose internal forces at the wetted surfaces

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References


Harkleroad, W. I. (1969). Basic Principles of Hose Design. Rubber Chemistry & Technology, 42(3), 666-674.

Sinnamon, R. H.(1978, September 5). The mathematics of braided and knitted hose.

Theory of the braiding angle (n.d.). W.& M. Ostermann.

Wilson, B. ( 1988, October 1). Theoretical hose performance under pressure.

Wire angle response characteristics in hydraulic hose (n.d.). SAE Paper 972706.




DOI: http://dx.doi.org/10.3968/10589

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