GOALI/Collaborative Research: Deformation Machining - A New Hybrid Process

GOALI/合作研究：变形加工——一种新的混合工艺

• 批准号: 0758607
• 负责人: Ted Belytschko
• 金额: --
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-05-15 至 2011-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0758607&HistoricalAwards=false
• 关键词: GOALI; Collaborative; Research; Deformation; Machining

The research objectives of this Grant Opportunity for Academic Liaison with Industry (GOALI) collaborative project are (1) to provide fundamental theoretical and experimental understanding of the newly proposed deformation machining process, (2) to establish efficient numerical modeling and simulation methodologies, and (3) to integrate the fundamental understanding and modeling with pre-process and in-process strategies for process planning, part repeatability, part accuracy, and design guidelines. The approach for the simulation will be an adaptive finite element method that will significantly reduce computation time, thereby allowing the study of various process combinations and sequences. Particular emphasis will be placed determining residual stresses and fatigue life through experiments and simulation. Numerical and experimental analysis will be used to study material deformation behavior, to predict fatigue life, and to design workable operational sequencing to achieve process repeatability and accuracy.If successful, the benefits and broader impacts of this research will come from the greater reliability and improved design freedom. This new manufacturing process will permit new structures, geometries, and products that are not feasible using current manufacturing processes. The theoretical understanding, experimental techniques, and new simulation methods will provide new insights. As a result, enhanced product capability as well as new flexibility and functionality in terms of manufacturability and product features will be possible. Finally, in the academic and educational environment, the proposal of a new hybrid process opens the door for collaboration between research communities that traditionally do not interact. The education plan will encourage students with diverse backgrounds to collaborate, and it will provide them with new opportunities and mentoring from the team members. The close interaction among students and faculty from each university, government laboratory personnel, and industry personnel, will result in rich, cross-disciplinary educational experience.

这个学术界与工业界联系的资助机会（GOALI）合作项目的研究目标是（1）提供新提出的变形加工过程的基本理论和实验理解，（2）建立有效的数值建模和模拟方法，以及（3）将基本理解和建模与工艺规划的预处理和过程中策略相结合，零件重复性、零件精度和设计指南。模拟的方法将是一种自适应有限元法，这将大大减少计算时间，从而可以研究各种工艺组合和顺序。特别强调将放在确定残余应力和疲劳寿命通过实验和模拟。数值和实验分析将用于研究材料的变形行为，预测疲劳寿命，并设计可行的操作顺序，以实现过程的可重复性和准确性。如果成功，这项研究的好处和更广泛的影响将来自更大的可靠性和更高的设计自由度。这种新的制造工艺将允许使用当前制造工艺不可行的新结构、几何形状和产品。理论理解，实验技术和新的模拟方法将提供新的见解。 因此，增强的产品能力以及在可制造性和产品功能方面的新的灵活性和功能将是可能的。 最后，在学术和教育环境中，一个新的混合过程的建议打开了大门，传统上不互动的研究社区之间的合作。该教育计划将鼓励不同背景的学生进行合作，并为他们提供新的机会和团队成员的指导。来自每所大学的学生和教师，政府实验室人员和行业人员之间的密切互动将带来丰富的跨学科教育经验。