碳纤维增强复合材料/钛合金叠层结构钻削仿真研究

Study on Drilling Simulation of CFRP/Titanium Stacks

碳纤维增强复合材料在航空领域常作为结构材料与钛合金组成叠层结构,能在减轻重量的同时利用两种材料的不同特点获得更优异的综合力学性能。本文应用有限元仿真方法模拟了叠层结构CFRP/Ti在CFRP→Ti和Ti→CFRP两种钻削顺序下的制孔过程,探究了不同钻削顺序对叠层结构钻削应力、钻削温度及制孔质量的影响规律。结果表明,在CFRP→Ti钻削顺序下叠层界面制孔质量更高,更能满足实际生产要求。

Carbon Fiber Reinforced Polymer(CFRP)composites are widely used in the aviation fields as structural materials to combine with titanium alloys to form stack structures,which can utilize the different characteristics of both stacked constituents to obtain more comprehensive mechanical properties while reducing weight.The finite element method is used to simulate the stacks drilling process under the CFRP→Ti and Ti→CFRP cutting sequences,and explore the effects of different cutting sequences on the drilling stresses,machining temperatures and drilling quality.The results indicate that under the CFRP→Ti sequence,much better interface quality can be achieved,which can better meet the actual production requirements.