Finite element analysis of failure process for tubular joints in fire by using transient and steady heat transfer methods

摘要

Finite element model is presented by using software ABAQUS and used to carry out heat transfer analysis for tubular joints, and its reliability has been verified through comparison with reported experimental tests. Using transient and steady heat transfer theory, the critical temperatures of tubular T-joints with different geometrical parameters are analyzed. The difference of the results obtained from the two methods is discussed. The study shows that the static behavior of a tubular joint at elevated temperature is safer when transient heat transfer theory is used.