Analytic calculation of temperature field in loose coal bulk based on spherical heat source model

Shape parameter determination of double ellipsoid heat source model in numerical simulation of high energy beam welding;

Applying the principle of Step Acceleration Method(Pattern Search Method),two parameter values of double ellipsoid heat source model,the rear half of semi-axe Cr and the front half of semi-axe Cf,can be predicted by the combination of finite element numerical simulation and temperature measurement in X70 steel during multiple wires submerged arc welding.

During the simulation of multiple wires submerged arc welding, it is very important to define parameters of double ellipsoid source model, and these parameters can make a direct effect on the weld shape, however,it is very hard to get them through practical experiments.

Auto-adapting heat source model for numerical analysis of friction stir welding;

The heat source model of the numerical simulation in the laser cladding;

New heat source model for numerical simulation of electron beam welding;

In the paper,assuming the gas flux,moving speed of the flame,processing time and the thickness of plate in line heating processing as input parameters,and heat efficiency and radius of the heat source as output results,a method of BP neural-network to predict the parameters of heat-source model for line heating is proposed.

Through studying the influence of piping water on strata temperature, a continuous line-heat-resource model is proposed by using the heat resource theory.