Hybrid deflection prediction on machining thin-wall monolithic aerospace components
Hybrid deflection prediction on machining thin-wall monolithic aerospace components
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DOI：
10.1177/0954405411425443
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发表时间：
2012-04-01
期刊：
影响因子：
2.6
通讯作者：
Ding, S.
中科院分区：
文献类型：
--
作者：
Izamshah, R.;Mo, J. P. T.;Ding, S.
整体零件的薄壁加工可以在更短的时间内制造出更高质量的零件。这带来了优势，特别是在库存管理和制造效率方面。但是，由于薄壁零件刚度差，在加工过程中更容易发生变形，从而导致尺寸形状误差。本文介绍了一种新的方法来预测壁变形加工薄壁功能减少分析时间从几周到几个小时。预测方法是基于有限元法和统计分析的组合。它包括基于特征的零件创建方法、材料去除的有限元分析以及与切削参数和组件属性相关的挠度的统计回归分析。通过钛合金零件的加工试验验证了预测值，仿真模型与试验数据吻合良好。
Thin-wall machining of monolithic parts allows better quality parts to be manufactured in less time. This brings advantages, particularly in inventory management and manufacturing efficiency. However, due to poor stiffness of thin-wall parts, deformation is more likely to occur in the machining process, which results in dimensional form errors. This paper describes a new methodology for prediction of wall deflection during machining thin-wall features with reduced analysis time from weeks to hours. The prediction methodology is based on a combination of the finite-element method and statistical analysis. It consists of a feature-based approach to parts creation, finite-element analysis of material removal, and statistical regression analysis of deflection associated with cutting parameters and component attributes. The prediction values have been validated by machining tests on titanium parts and show good agreement between simulation model and experimental data.