論文
AZ31マグネシウム合金板の温間深絞り加工の有限要素解析
2006 年 47 巻 541 号 p. 129-133
詳細
2006 年 47 巻 541 号 p. 129-133
The deformation behavior and temperature change in the cylindrical deep drawing of an AZ31 magnesium alloy sheet at elevated temperatures are simulated by the combination of the rigid-plastic and heat conduction finite element methods. The flow stresses of the sheet at elevated temperatures are measured, and given in the simulation with a simple formula composed of the functions of strain, strain rate and temperature. A comparison with the experimental results shows that the forming limit is successfully predicted by the simulation. It is clarified that an appropriate distribution of flow stress depending on temperature must exist in the sheet for realizing a high limiting drawing ratio.
