首页> 外文会议>SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida >Experimental and numerical modeling of material removal during high speed grinding process
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Experimental and numerical modeling of material removal during high speed grinding process

机译:高速磨削过程中材料去除的实验和数值模拟

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Machining is a high strain rate process involving strain rates of the order of 10~3/s-10~5/s. Process induced damage is currently a major hindrance in producing quality precision ceramic parts. Recently, high speed machining is being pursued to reduce Force/Grit, and the associated process induced damage. The present work investigates the effect of high strain rate in single grit scratching of pyrex glass using experimental and numerical approaches. In the rate sensitive regime (typically >500/s), the Force/Grit (required to impose same maximum depth of cut) is observed to increase with strain rate. The increased FOrce/Grit, in turn, causes higher level of process induced damage. These observations suggest that benefits of cutting at higher speeds should be weighed against the rate sensitivity effects for strain rate sensitive materials.
机译:机加工是高应变速率的过程,涉及大约10〜3 / s-10〜5 / s的应变速率。当前,工艺引起的损坏是生产高质量精密陶瓷零件的主要障碍。近来,正在追求高速加工以减小力/砂砾,以及相关的过程引起的损坏。本工作使用实验和数值方法研究了高应变速率对派热克斯玻璃单颗粒刮擦的影响。在速率敏感状态(通常> 500 / s)中,观察到力/粗砂(要求施加相同的最大切割深度)随应变速率而增加。反过来,增加的FOrce /砂砾会导致更高程度的过程性损坏。这些观察结果表明,应权衡以较高速度进行切割的好处与应变速率敏感材料的速率敏感效果。

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