SiCp/Al复合材料薄壁件切削加工变形、损伤机理及抑制方法研究

项目名称： SiCp/Al复合材料薄壁件切削加工变形、损伤机理及抑制方法研究

项目编号： No.51275316

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 黄树涛

作者单位： 沈阳理工大学

项目金额： 80万元

中文摘要： SiCp/Al复合材料薄壁件在高新技术领域具有广阔的应用发展前景，其切削变形和振动特性有别于金属材料薄壁件，切削过程产生的损伤甚至破坏，也是其独特而重要的问题，目前国内外尚缺乏相应研究。本项申请拟根据SiCp/Al复合材料的材料结构特点，提出以细观力学为基础的SiCp/Al复合材料薄壁件切削变形、振动的理论模型及切削损伤萌生和演化机制，应用数值模拟和实验方法，对SiCp/Al复合材料非回转体和回转体薄壁件在高速铣削、高速车铣、精密车削加工条件下的切削变形、振动及损伤特性、机理和影响因素进行深入系统的研究，提出减小切削变形和损伤的热力学条件及切削工艺参数，建立流体随动支承抑制变形及振动的理论模型和机制、方法，实现SiCp/Al复合材料薄壁件的精密切削加工。本项研究对促进切削加工理论的完善和发展，推动SiCp/Al复合材料薄壁件的应用及相关科学技术的发展，具有重要的理论和实际意义。

中文关键词： SiCp/Al复合材料薄壁件；切削加工；变形；损伤；抑制方法

英文摘要： SiCp/Al composites thin-walled parts have wide application development prospects in the high-technology fields, and the cutting deformation and vibration are very different from that of the thin-walled made of metal material. In addition, the damage and even destroy produced in cutting process are also unique, important and lack of study both for home and abroad. In this project, according to the structural characteristics of SiCp/Al composites, the cutting deformation and vibration theoretical model of SiCp/Al composites thin walled part, and the cutting damage initiation and evolution mechanisms will be proposed based on the micro mechanics theory. At the same time, the simulation and experimental methods will be used to investigate the cutting deformation, vaibration and damage characteristics, mechnisms and the influencing factors during high-speed milling, high-speed turn-milling and precision turning of SiCp/Al composites non-rotary and rotary thin-walled part, therefore, the thermo-dynamic conditions and cutting process parameters used to reduce the cutting deformation and damage can be proposed. Then, the theoretical models,mechanisms and methods of the fluid servo dynamic support system will be established to suppress deformation and vibration effectively, which can realize the precision machining of Si

英文关键词： SiCp/Al composites thin-walled part；Machining；Deformation；Damage；Suppression methods