STRESS CONCENTRATION FACTOR AT BRANCH PIPE UNDER INTERNAL PRESSURE

The position and ratio size of branch in piping fitting are two important factors in ensuring the safety of piping system. This report highlights the simulation analysis of various positions of the branch pipes with 30o, 45o, 60o and 90o angles to the main pipe. The objective of the study is to study elastic behaviour including elastic stress distribution, stress concentration factor, and deformation characteristics of three full scale branch pipes under internal pressure with different geometric dimensions and lateral angle (sym. angle) by three-dimensional finite element methods. At the beginning, AutoCAD and CATIA software was used to design the structural design of the branch pipes and then followed by the use of ANSYS software to analyze the strength of the pipes under internal pressure.