Temperature And Residual Stress Field Analysis For Aluminum Alloy Cylinder Structure Reinforced By Rib With Discontinuous Fillet

Aluminum alloy is becoming excellent structure material because of its lightness, high intensity, easy to be machined, corrosion preventing, great performance in low temperature environment. In recent years, aluminum alloy is widely applied to traffic, railroad, ship, aerospace and manufacturing engineering field. However, in the matter of its welding, there are many topics need to be studied. In this research, with two methods of experiment and numerical simulation, temperature and residual stress field analysis have been done in order to study 5A06 Aluminum Alloy Cylinder Structure (AACS) reinforced by rib with discontinuous fillet.First, Infrared method has been used to determine the front and back temperature field of 5A06 AACS. Find some critical points and testing area on which we drew temperature cycle curve and Isothermal chart to have a systematical description of regularity of temperature. We then used cutting method to determine the two-axial residual field of AACS.Second, debug numerical simulation temperature field by using the plenty of experimental temperature data above. After adjusting some parameters of double-ellipsoid heat source model and other conditions, we got a simulation result almost similar to experimental results.Finally, use this relatively accurate simulation results as temperature load to calculate stress field of AACS and then compare this calculate result to experimental result.The result indicates after debugging the simulation temperature field, the error range can be controlled within 10% and by using this accurate temperature field as temperature load, we can calculate a better simulation stress field similar to experiment result.