Experiment-calculation comparison of the cutting conditions representative of the long fiber composite drilling phase
Experiment-calculation comparison of the cutting conditions representative of the long fiber composite drilling phase
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DOI：
10.1016/j.compscitech.2004.09.028
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发表时间：
2005-03-01
影响因子：
9.1
通讯作者：
Pasquet, P
中科院分区：
文献类型：
--
作者：
Zitoune, R;Collombet, F;Pasquet, P
以长纤维复合材料结构在钻孔过程中的损伤建模为目标，采用简化的研究框架，选择正交切削方法。本研究分为两部分，第一部分是对碳纤维/环氧树脂单向板在纤维方向与切削方向（切削速度）夹角不同情况下的正交切削进行实验分析。第二部分是关于纤维相对于刀具切削方向定向为0度的简单情况下的静力学正交切削的数值模拟。切屑的实验研究表明，纤维取向与刀具切削速度方向的夹角对切屑的形成和断裂模式有很大的影响。数值计算是基于断裂过程，特别是基于虚拟裂纹扩展方法（使用SAMCEF软件）计算的能量释放率。它使测量刀具几何形状和切削深度对切削力的影响成为可能。(C) 2004 Elsevier Ltd.版权所有。
With the aim of damage modeling in long fiber composite structures during drilling, a simplified framework of study is adopted with the choice of orthogonal cutting. This study consists of two parts, The first is related to the experimental analysis of the orthogonal cutting applied to unidirectional laminates in carbon/epoxy for various angles between the direction of fibers and the toot cutting direction (cutting speed). The second part concerns the numerical modeling of the orthogonal cutting in statics for the simple case of fibers orientated at 0degrees with respect to the tool's cutting direction. The experimental study of the cut highlights the great influence of the angle between the fiber orientation and the direction of cutting speed of the tool on the chip formation as well as the rupture modes. Numerical computation is based on the fracture process and more particularly on the computation of the energy release rate by the method Virtual Crack Extension (using the software, SAMCEF). It makes it possible to measure the influence of the geometry of the cutting tool and the depth of the cut on the cutting force. (C) 2004 Elsevier Ltd. All rights reserved.