多能场作用下复杂零件的服役变形机理与几何补偿

项目名称： 多能场作用下复杂零件的服役变形机理与几何补偿

项目编号： No.51275535

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： 廖平

作者单位： 中南大学

项目金额： 80万元

中文摘要： 以燃气轮机为典型的高端装备，是衡量一个国家综合竞争实力的重要标志。叶片是燃气轮机的关键功能零件，是典型的复杂零件，我国尚未掌握核心技术，缺乏自主设计能力，长期受制于人，成为制约我国高端装备发展的瓶颈。 本项目以燃气轮机叶片为代表，以高性能服役为目的，以复杂零件服役变形为核心，综合采用流体力学、传热学、结构和强度力学等多学科理论，建立多能场作用下的复杂零件服役变形数学模型，并进行协同仿真，探寻复杂零件服役过程中多能场耦合作用，揭示复杂零件的服役变形机理；根据复杂零件最佳服役状态下的设计曲面，构造三维变形域，提出基于几何补偿的加工曲面重构方法；组建模拟实验平台，进行多能场作用的模拟实验，对理论研究成果和方法进行实验验证，为实现多能场作用下复杂零件数字化设计-加工一体化奠定理论基础。

中文关键词： 多能场耦合；复杂零件；几何补偿；燃气轮机；数字化制造

英文摘要： Advanced equipment is an important symbol of a country's comprehensive competitive strength, gas turbine is its quintessence . Gas turbine blade is the key functional part, and typical complex part as well. China has not yet master the core technology, lacks self-design capability, and is under the control of others in long term. This becomes a bottleneck, restricting the development of China's advanced equipment. This project is represented by gas turbine blade, aims at high performance, and centers on complex parts deformation. By using a combination of fluid mechanics, heat transfer, the structure and intensity mechanics,etc., mathematical models of complex parts deformation in multi-energy field will be created and collaborative simulation will be carried out to explore the coupling effect of the complex parts serving in the multi-energy fields and reveal deformation mechanism of complex part.According to design surface of the complex parts under the best service condition,3D deformation domain will be constructed, and reconstruction method of manufacturing surface based on the geometric compensation is presented. Experimental platform will be built for simulation experiments of effect caused by multi- energy field, so theories and methods can be verified by experiments. The theoretical foundation will be es

英文关键词： multi-energy fields coupling；complex surfaces part；geometric compensation；gas turbine；digital manufacturing