Simulation of inverse heat conduction problems in fusion welding with extended analytical heat source models
Simulation of inverse heat conduction problems in fusion welding with extended analytical heat source models作者机构：St. Petersburg State Polytechnical University St. Petersburg 195251 Russia Federal Institute for Materials Research and Testing （BAM） Berlin Germany
出 版 物：《Frontiers of Materials Science》 (材料学前沿（英文版）)
年 卷 期：2011年第5卷第2期
页 面：119-125页
核心收录：
学科分类：080503[工学-材料加工工程] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070102[理学-计算数学] 0802[工学-机械工程] 0701[理学-数学] 080201[工学-机械制造及其自动化]
基 金：Deutsche Forschungsgemeinschaft DFG under the Grant ID
主 题：laser beam welding volume heat source functional-analytical solution inverse modelling
摘 要：The paper presents bounded volume heat sources and the corresponding functional-analytical expressions for the temperature field. The power density distributions considered here are normal, exponential and parabolic. The sources model real heat sources like the welding arc, laser beam, electron beam, etc., the convection in the weld pool as well as the latent heat due to fusion and solidification. The parameters of the heat source models are unknown a priori and have to be evaluated by solving an inverse heat conduction problem. The functional-analytical technique for calculating 3D temperature fields in butt welding is developed. The proposed technique makes it possible to reduce considerably the total time for data input and solution. It is demonstrated with an example of laser beam welding of steel plates.
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