基于CATIA/CAA的航空整体结构件温度变形补偿  

Temperature Deformation Compensation of Aircraft Integrated Structure Based on CATIA/CAA

作　　者：路来骁 孙杰[1] 张阁[1] 罗育果[2] 熊青春[2] 

机构地区：[1]山东大学机械工程学院高效洁净机械制造教育部重点实验室 [2]中航工业成都飞机工业(集团)有限责任公司数控加工厂

出　　处：《航空制造技术》2015年第3期21-24,29,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51275277)资助

摘　　要：环境温度变化对铝合金整体结构件尺寸误差有较大影响,实现因环境温度变化引起工件变形的有效补偿可显著提高航空整体结构件制造精度。采用热机械分析仪测量铝合金毛坯7050-T7451和2124-T851三个方向热膨胀系数值,建立了环境温度与热膨胀系数、缩放系数之间的数学理论模型,采用零件特征遍历算法,实现了CATIA环境下零件CAD模型的准确尺寸重构,完成了线性变形快速补偿软件开发。The temperature variation influences dimensional error of aluminum alloy aircraft integrated structure greatly.Manufacturing precision of aircraft integrated structure could be improved significantly by achieving effective compensation caused by temperature variation.Thermal Mechanical Analysis（TMA） is adopted to measure the CTE（coefficient of thermal expansion）of pre-stretched aluminum alloy sheet 7050-T7451 and2124-T851 in three vertical directions.The mathematical theoretical model between temperature and CTE,scaling coefficient is established.The exact dimension reconstruction of CAD models in CATIA is achieved by implementing feature traversal algorithm and the linear deformation compensation software system is also developed.

关 键 词：CATIA/CAA 热膨胀系数 航空整体结构件 尺寸重构 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程]