An enhanced analytical model for residual stress prediction in machining
An enhanced analytical model for residual stress prediction in machining
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DOI：
10.1016/j.cirp.2008.03.060
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发表时间：
2008-01-01
影响因子：
4.1
通讯作者：
Kaftanoglu, B.
中科院分区：
文献类型：
--
作者：
Lazoglu, I.;Ulutan, D.;Kaftanoglu, B.
残余应力的预测对飞机的安全性至关重要。在本文中，一个增强的分析弹塑性模型，提出了使用工件上的热应力和机械应力的叠加，然后通过松弛过程。理论上的残余应力预测进行了验证实验与X射线衍射测量的高强度工程材料的Waspaloy，用于关键部件，如飞机喷气发动机。与等效有限元模型相比，增强的分析模型，获得了准确的残余应力结果，而计算时间从天减少到秒。(c)2008年CIRP。
The predictions of residual stresses are most critical on the machined aerospace components for the safety of the aircraft. In this paper, an enhanced analytic elasto-plastic model is presented using the superposition of thermal and mechanical stresses on the workpiece, followed by a relaxation procedure. Theoretical residual stress predictions are verified experimentally with X-ray diffraction measurements on the high strength engineering material of Waspaloy that is used critical parts such as in aircraft jet engines. With the enhanced analytical model, accurate residual stress results are achieved, while the computational time compared to equivalent FEM models is decreased from days to secends. (c) 2008 CIRP.