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首页> 外文期刊>Journal of manufacturing science and engineering: Transactions of the ASME >An Efficient Reliability-Based Simulation Method for Optimum Laser Peening Treatment
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An Efficient Reliability-Based Simulation Method for Optimum Laser Peening Treatment

机译:一种基于可靠性的优化激光喷丸处理方法

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摘要

A method is introduced for efficient reliability-based design of laser peening (LP) surface treatment to extend fatigue life of metal components. The method includes nonparametric probability density estimation, surrogate modeling using a new finite element (FE or FEA) approach, and reliability analysis with correlated random variables (RVs). Efficient LP simulation is achieved via a new technique termed single explicit analysis using time-dependent damping (SEATD), which reduces simulation times by a factor of 6. The example study of a three-point bend coupon reveals that fatigue life reliability significantly affects optimal LP design, as 52 laser spots are needed for 99% reliability versus 44 spots for 95%.
机译:引入了一种基于有效可靠性的激光喷丸(LP)表面处理设计方法,以延长金属部件的疲劳寿命。该方法包括非参数概率密度估计,使用新的有限元(FE或FEA)方法进行的替代建模以及具有相关随机变量(RVs)的可靠性分析。通过使用时变阻尼(SEATD)的称为单显式分析的新技术实现了有效的LP仿真,该技术将仿真时间减少了6倍。三点弯曲试样的示例研究表明,疲劳寿命可靠性显着影响了最佳寿命。 LP设计,因为需要52个激光点才能达到99%的可靠性,而需要44个点才能达到95%。

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