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Grinding mechanism of high-temperature nickel-based alloy using FEM-FBM technique

机译:采用FEM-FBM技术的高温镍基合金研磨机理

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摘要

The models, simulation, and validation were presented during the last decade over various moving particle investigations with thermal convection and disclosed the challenges as well. The present work provides the simulation and validation of the grinding mechanism of high-temperature nickel-based alloy with single abrasive grain. Several nickel-based alloys provide better performances for temperatures above 1000 degrees C and those suited for extremely difficult conditions as well. In this study, we simulate and analyze the grinding mechanism of high-temperature nickel-based alloy using single abrasive grain cutting. Using a grinding, it introduces variation in friction coefficient as per the variations of the grinding parameters. The grinding force system of single abrasive grain is designed and simulated to investigate high-temperature nickel-based alloy using various grinding conditions like particle settling modes such as rolling, horizontal, and vertical with thermal convection. The multi-grid finite element fictitious boundary method (FEM-FBM) is used to simulate and study the grinding mechanism of high-temperature nickel-based alloy in terms of fluid-particle sedimentations. The material used for this simulation study is Inconel 718 alloy. The simulation results investigate the various grinding force conditions of high-temperature nickel-based 718 alloys using the dimensional physical parameters and numbers such as Prandtl number and Grashof number. Finally, the simulation results were validated with a conventional FEM model.
机译:这些模型、模拟和验证是在过去十年中针对各种热对流运动粒子研究提出的,并揭示了挑战。本文对高温镍基合金单磨粒磨削机理进行了模拟和验证。几种镍基合金在1000摄氏度以上的温度下以及在极端困难的条件下都具有更好的性能。在本研究中,我们模拟和分析了高温镍基合金单磨粒切削的磨削机理。使用磨削时,摩擦系数随磨削参数的变化而变化。设计并模拟了单个磨粒的磨削力系统,以研究高温镍基合金在不同磨削条件下的磨削性能,如滚动、水平和垂直热对流的颗粒沉降模式。采用多重网格有限元虚拟边界法(FEM-FBM)对高温镍基合金的磨削机理进行了模拟研究。本模拟研究所用材料为Inconel 718合金。模拟结果利用Prandtl数和Grashof数等尺寸物理参数和数值研究了高温镍基718合金的各种磨削力条件。最后,用常规有限元模型对仿真结果进行了验证。

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