Experimental and Fracture Mechanics Fatigue Studies of Double Angle Railway Bridge Connections

双角铁桥连接的试验与断裂力学疲劳研究

• 批准号: 9312851
• 负责人: Emmanuel Maragakis
• 金额: $ 16.65万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312851&HistoricalAwards=false
• 关键词: Experimental; Fracture; Mechanics; Fatigue; Studies

9312851 Maragakis This research is a study to perform full-scale tests of double angle railway bridge connections and evaluate their fatigue strength by monitoring the development and propagation of cracks. A fatigue reliability model will be developed based on the fracture mechanics approach. A detailed finite element model of the connections will also be developed. New connections as well as connections from older railway bridges will be tested. These connections will be supplied by the American Association of Railroads (AAR) which has expressed a strong interest in the project and will be cooperating in the investigation. ***

小行星9312851 本研究系针对铁路双角钢桥梁连接件进行全尺寸试验，并借由监测裂缝发展与扩展，评估其疲劳强度。 将基于断裂力学方法开发疲劳可靠性模型。 还将开发详细的连接有限元模型。 新的连接以及旧铁路桥的连接将进行测试。 这些连接将由美国铁路协会（AAR）提供，该协会对该项目表示了浓厚的兴趣，并将配合调查。 ***