GOALI: Fundamental Studies and Modeling of Pulsed Tube Hydroforming

GOALI：脉冲管液压成形的基础研究和建模

• 批准号: 1031169
• 负责人: Ioannis Korkolis
• 金额: $ 35.98万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1031169&HistoricalAwards=false
• 关键词: GOALI; Fundamental; Studies; Modeling; Pulsed

The objectives of this Grant Opportunity for Academic Liaison with Industry (GOALI) research project are to a) create a fundamental understanding of the enhanced formability of metals during pulsed tube hydroforming, and b) develop analytical and numerical models of the process that will allow industries such as automotive and aerospace to capitalize on this behavior. Traditionally, loading during tube hydroforming is applied monotonically. Recently, it was demonstrated on actual components that if the loading is applied in a pulsed fashion (frequency ~1 Hz), significant gains in formability can be reaped. The mechanism(s) that lead to such improvements are presently unknown. The first objective of this research is to clarify these mechanisms by investigating different hypotheses experimentally. The materials to be examined are Advanced High Strength Steels and Aluminum alloys. The experimental findings will guide the research team into developing the analytical and numerical tools required by the industrial end-users to implement such technologies.This advanced hydroforming process and the models developed in this research will benefit society at large by reducing the environmental impact, and by enabling more aggressive product designs of products such as automobiles. Graduate and undergraduate students, including underrepresented groups in engineering, will benefit from the industrial focus of this project and from the integration of the results into the curriculum. The NSF Research Experience for Undergraduates (REU) and Research Experience for Teachers (RET) frameworks will be used to attract talented participants to aid with the research tasks. The RET participants will also identify high-school students to be engaged in research over the summer, thus attracting more students to STEM disciplines. Finally, the results of this research will be effectively communicated to industry through workshops conducted with the industrial partners (Alcoa, Ford, U.S. Steel).

该学术联络与工业（GOALI）研究项目的目标是：a)对脉冲管液压成形过程中金属的增强成形性有一个基本的了解；b)开发该过程的分析和数值模型，使汽车和航空航天等行业能够利用这一行为。传统上，管材液压成形过程中的加载是单调的。最近，在实际部件上证明，如果以脉冲方式施加载荷（频率~ 1hz），可以获得显著的成形性增益。导致这种改善的机制目前尚不清楚。本研究的第一个目的是通过实验研究不同的假设来阐明这些机制。要检查的材料是高级高强度钢和铝合金。实验结果将指导研究小组开发工业最终用户所需的分析和数值工具，以实施这些技术。这种先进的液压成形工艺和在这项研究中开发的模型将通过减少对环境的影响，并通过实现更积极的产品设计，如汽车，从而使整个社会受益。研究生和本科生，包括工程专业未被充分代表的群体，将受益于本项目的工业重点以及将结果整合到课程中。NSF本科生研究经验（REU）和教师研究经验（RET）框架将用于吸引有才华的参与者协助研究任务。RET参与者还将在夏季确定高中学生从事研究，从而吸引更多学生进入STEM学科。最后，本研究的结果将通过与工业伙伴（美国铝业公司，福特公司，美国钢铁公司）举办的讲习班有效地传达给工业。