Simulation and Optimization of Temperature Field of Tank Cover with Super Large Diameter during the Creep Aging Forming Process

Abstract

The uniformity of temperature field distribution in creep aging process is very important to the forming accuracy of components. In this paper, the temperature field distribution of 2219 aluminum alloy tank cover during aging forming is simulated by using the finite element software FLUENT, and a two-stage heating process is proposed to reduce the temperature field distribution heterogeneity. The results show that the temperature difference of the tank cover is large in the single-stage heating process, and the maximum temperature difference is above 27°C,which seriously affects the forming accuracy of the tank cover. With two-stage heating process, the temperature difference in the first stage has almost no direct impact on the forming accuracy of the top cover. In the second stage, the temperature difference of the tank cover is controlled within 10°C, compared with the single-stage heating, the maximum temperature difference is reduced by more than 17°C. The two-stage heating effectively reduces the heterogeneity of the temperature field of the top cover. The research provides technical support for the precise thermal mechanical coupling of large-scale creep aging forming components.

Application of a Frequency Converter in Electric Automatic Control of Central Heating

“…e predicted building energy consumption was very close to the actual energy consumption and the relative error of energy consumption fluctuates was within the acceptable range of 5%. e experiment shows that the support vector machine method is highly feasible in the research of building energy consumption [5]. Kumar et al collected and analyzed the supply and return water temperature and other values in the local heating system and predicted the supply and return water temperature in the heating system by using the impulse response method.…”