Investigation of modeling on single grit grinding for martensitic stainless steel
Investigation of modeling on single grit grinding for martensitic stainless steel
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DOI：
10.1007/s11771-018-3875-8
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发表时间：
2018-08
影响因子：
4.4
通讯作者：
Zhenguo Nie;Gang Wang;F. Jiang;Yong-liang Lin;Y. Rong
中科院分区：
文献类型：
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作者：
Zhenguo Nie;Gang Wang;F. Jiang;Yong-liang Lin;Y. Rong
单磨粒磨削是宏观磨削的简化模型。与实验研究相比，有限元分析是研究单粒磨粒磨削过程中物理场的有力工具。基于2Cr 12 Ni 4 Mo 3VNbN钢的动态力学行为和磨粒的数理统计，利用商业软件ANSYS Edge对单粒磨削过程进行了建模。设计了验证实验，通过与磨削力的对比，验证了有限元模型的正确性。验证结果表明，该有限元模型能够较好地描述单磨粒磨削过程。通过实验和仿真研究了磨削力和多物理场的分布规律。结果表明，法向磨削力和切向磨削力均与切削速度和切削深度呈线性关系。最高温度位于磨粒前方的亚表面，而最大应力和应变位于磨粒尖端下方。在单粒磨削过程中，应变速率可以高达约106 s-1，这比其他传统的加工操作更大。
Single grit grinding is the simplified model to abstract the macro scale grinding. Finite element analysis is a strong tool to study the physical fields during a single grit grinding process, compared to experimental research. Based on the dynamic mechanical behavior of 2Cr12Ni4Mo3VNbN steel and the mathematical statistics of abrasive grit, modeling of the single grit grinding process was conducted by using commercial software AdvantEdge. The validation experiment was designed to validate the correctness of the FEA model by contrast with grinding force. The validation result shows that the FEA model can well describe the single grit grinding process. Then the grinding force and multi-physics fields were studied by experimental and simulation results. It was found that both the normal and tangential grinding forces were linearly related to the cutting speed and cutting depth. The maximum temperature is located in the subsurface of the workpiece in front of the grit, while the maximum stress and strain are located under the grit tip. The strain rate can reach as high as about 106s−1during the single grit grinding,which is larger than other traditional machining operations.