On calculation of leak tightness of rivet joints

Аuthors

Shishkin S. S.

Mechanical Engineering Research Institute of the Russian Academy of Sciences, 4, M. Khariton'evskii per., Moscow, 101990, Russia

e-mail: ssshisha@yandex.ru

Abstract

A technique is suggested to analyze leak tightness for aircraft rivet joints with complete contact between plate surfaces and rivet shank. The technique is based on the theory of a porous layer. A simple procedure is discussed to calculate the contact pressure in a rivet joint according to the theory of small plasto-elastic deformations basing on direct measurements of component deformations in plates. It is revealed that in domain of real-world process variables for rivet joints leak tightness is determined by height oj microroughnesses on the hole surface. The contact pressure value is demonstrated considerably smaller influence the leak tightness.

Keywords:

leak tightness, consumption, complete contact, porous layer, supporting curve, micro roughness, contact pressure