Welding Stress Analysis of Manhole of Liquid Ammonia Storage Tank Based on Gauss Heat Source
Safety and reliability of liquid ammonia storage tank is very important. The stress of manhole is high and complex, so it is necessary to analyse welding stress of manhole of liquid ammonia storage tank. This paper ignored the complex process in the weld pool, simulated complex thermal process in weld pool by continuous conductive welding heat source, deduced the calculation formula of maximum stress by establishing Gaussian heat source model of carbon dioxide welding, and modified stress exponent k of cylindrical pressure vessel. This new method has a positive meaning for welding stress analysis of pressure vessel.
J. Z. Zhang et al., "Welding Stress Analysis of Manhole of Liquid Ammonia Storage Tank Based on Gauss Heat Source", Applied Mechanics and Materials, Vols. 52-54, pp. 1942-1946, 2011