Numerical analysis and optimal design to reduce residual stresses and deformations of die casting baseplate after ejection

Kim Taesan; Jin Kai; Kim Naksoo; Kim Byeonggon

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Numerical analysis and optimal design to reduce residual stresses and deformations of die casting baseplate after ejection

机译：减少压铸底板弹出后残余应力和变形的数值分析和优化设计

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During the manufacturing process of die casting baseplate, residual stresses and deformations, such as warping, local bending and shrinkage, are produced due to the changes of temperature, pressure and cooling regime during the packing and cooling stages. Using the Elastic-plastic model of AZ91D magnesium alloys at different temperature, a numerical analysis model for the die casting baseplate which combines with the influence of residual stresses generated at the packing and cooling stages was built. To verify the numerical results, 3D scanning technology was used that measured the deformation of the whole baseplate and drew a deformation pattern. Through comparison, it is concluded that the calculated deformations were consistent with that of measurement. Furthermore, the residual stresses were generated differently due to the process parameter change, so that the optimal design was taken for mold temperature, packing pressure and packing and cooling regime. Through optimal design, baseplate deformation was reduced effectively.

机译：在压铸基板的制造过程中，由于在填充和冷却阶段的温度，压力和冷却方式的变化，会产生残余应力和变形，例如翘曲，局部弯曲和收缩。利用AZ91D镁合金在不同温度下的弹塑性模型，建立了压铸底板的数值分析模型，该模型结合了在填充和冷却阶段产生的残余应力的影响。为了验证数值结果，使用了3D扫描技术，该技术测量了整个基板的变形并绘制了变形图案。通过比较得出结论，计算出的变形与测量值一致。此外，由于工艺参数的变化，产生的残余应力也不同，因此针对模具温度，保压压力以及保压和冷却方式进行了最佳设计。通过优化设计，可以有效减少基板变形。

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《Journal of Mechanical Science and Technology》 |2015年第7期|共8页
作者
Kim Taesan; Jin Kai; Kim Naksoo; Kim Byeonggon;
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正文语种 eng
中图分类机械学（机械设计基础理论）;
关键词
Die casting; Residual stress; Taguchi method; Response surface method;

机译：压铸;残余应力;田口法;响应面法;

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1. Numerical analysis and optimal design to reduce residual stresses and deformations of die casting baseplate after ejection [J] . Kim Taesan, Jin Kai, Kim Naksoo, Journal of Mechanical Science and Technology . 2015,第7期

机译：减少压铸底板弹出后残余应力和变形的数值分析和优化设计
2. Optimum Design of Thick-Walled Multi-Layered CFRP Pipes to Reduce Process-Induced Residual Stresses [J] . H.Sekine, E.-S.Shin Applied composite materials . 1999,第5期

机译：厚壁多层CFRP管的优化设计以减少过程引起的残余应力
3. Numerical simulation to study the effect of tack welds and root gap on welding deformations and residual stresses of a pipe-flange joint [J] . M. Abid, M. Siddique International Journal of Pressure Vessels and Piping . 2005,第11期

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4. Prediction of Distortion and Residual Stresses in a Magnesium High-Pressure Die Casting With Considerations to the Die-Casting Process [C] . Winston Sequeira, Steve Sikorski, Soren Andersen, SAE World Congress . 2006

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Numerical analysis and optimal design to reduce residual stresses and deformations of die casting baseplate after ejection

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