4. In the present study, through using non-linear three dimensional finite element analysis (FEA), considering the contact in flange to nut and flange to gasket, we accurately computed the stress distribution in the flange joint in the normal work condition. The FEA analysis, incorporating ANSYS software, use pretention179 element to model the preload ofthe bolt.
According to the requirement of ASME B16 20 to wound gaskets, and accounting for practice jointing of flange, this paper propose the graded technique of metal wound gaskets which based on the analysis of prestress between pipe flanges and wound gaskets Furthermore, through adjusting the structure of gaskets and controlling the manufaturing technique, the mechanical property of gasket is made to meet the requirement of bolt, then the flange joint meets the practice requirement of sealing property This paper has made many experiments to testify this theory
Determination of Safe Operating Conditions for Non-gasketed Flange Joint under Combined Internal Pressure and Temperature
Performance of a flange joint is characterised mainly due to its 'strength' and 'sealing capability'.
To investigate, joint strength and sealing capability under combined internal pressure and different steady state thermal loading, a 3D non-linear finite element analysis of non-gasketed flange joint is carried out and its behaviour is discussed.
In addition, effect of coefficient of thermal expansion of different flange joint component material is discussed and importance is highlighted.
Evaluation of the probability of a leak in the flange joint of a steam-generator collector cover as a result of stud failure