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学术报告预告:Advanced Direct Method for the Structural Design and Life Assessment of Component
发布时间: 2017年04月17日 17:07  |  作者:nic

报告题目:Advanced Direct Method for the Structural Design and Life Assessment of Component

报告人:Professor Haofeng Chen(陈浩峰教授)

英国Strathclyde大学

时间:2017年4月19日(周三)上午9:30-11:00

地点:新主楼会议中心第三会议室

报告摘要:

Engineering design and integrity assessment of mechanical structures subjected to cyclic thermal and mechanical loads is an important technological challenge, with long-term research and industrial implications. In order to improve industrial practice in structural design and life assessment, and advance the internationally-leading role of the UK in the assessment of industrial and commercial mechanical structures, in particular, in underpinning moves to the high temperature structures required for emissions reduction targets, novel direct methods, encapsulated in state-of-the art software, for the design and life assessment of mechanical structures, have been developed to enhance both UK’s R5 procedure for the high temperature response of structures and R6 procedure for defect assessment below the creep range. These novel direct methods, based upon the Linear Matching Method (LMM) framework, can be applied to the entire sequence of procedures required for high-integrity structural life assessment, and have been successfully developed and transferred by the speaker and his colleagues into the UK engineering industry including the EDF Energy and Rolls-Royce, where they are now in extensive use to improve and optimize structural life assessment procedures. In this talk, the development and application of novel direct methods for the design and life assessment of mechanical structures will be introduced for various problems encountered in current structural integrity assessment methodologies, including shakedown and limit analysis, ratchet analysis, low cycle fatigue, creep damage, creep and fatigue interaction for a wide range of key practical problems including an Advanced Gas-cooled Reactor (AGR) superheater header component, defective pipelines, and welded structures. Being part of R5 code, the LMMs transform current integrity assessment practice by requiring less specialized user input, reducing cost and time, and improving quality.

为了改善结构设计与寿命评估的现有方法,并推进英国在机械结构完整性评估领域的国际领先地位,尤其是在支持减排目标所需的更多高温结构应用,报告人和他的研究团队建立了一系列新颖的数值直接方法并开发了相应的用于机械结构设计与寿命评估的工程软件,进一步完善了用于高温结构安全评估的英国R5规范以及用于常温含缺陷结构完整性评估的 R6规范。基于线性匹配法(LMM)框架发展起来的这些新颖的数值直接方法,可以解决结构设计与寿命评估的一系列问题,并已成功的应用到英国工程行业,包括英国 EDF 能源公司和劳斯莱斯公司等。他们资助并使用这些数值方法,用于改善和优化现有的结构完整性评估程序。本报告详细介绍了这些用于机械结构设计和完整性评估的新型直接方法在理论上,数值方法上和软件开发上的进展,以及在解决结构完整性评估中遇到的不同问题的具体应用,包括极限与安定分析,棘轮破坏分析,交变塑性,低周疲劳分析,蠕变断裂分析,蠕变应力松弛,以及蠕变疲劳交互作用分析。通过对一系列不同结构的实际应用,包括过热器热交换器组件,带凹坑缺陷的管道,含裂纹结构和焊接结构的完整性评估等。作为 R5 最新规范的一部分,线性匹配法及其相应的软件进一步简化了用户输入要求,降低了完整性评估成本和时间,提高了结构寿命评估质量和精度,从而极大改善了结构完整性评估的现有方法。

主讲人简介:

Professor Haofeng Chen is a Reader and PhD supervisor at the Department of Mechanical and Aerospace Engineering, University of Strathclyde, UK, and a Chair Professor of East China University of Science and Technology. He has also been appointed or awarded as the Royal Academy of Engineering Senior Research Fellow, Associate Editor of the ASME Journal of Pressure Vessel Technology, Fellow of The Institution of Mechanical Engineers, Fellow of the Higher Education Academy and Chartered Engineer. He earned two Bachelor degrees in engineering mechanics and economic management from Tsinghua University in 1994, and his MEng and PhD in solid mechanics from Tsinghua University in 1995 and 1998, respectively. He was then a research fellow in the School of Mechanical and Production Engineering at Nanyang Technological University, and subsequently a research fellow in the Department of Engineering at the University of Leicester. From 2006 to 2008, he was a chartered senior engineer at ALSTOM Power Technology Centre (Rugby, UK), working in the Mechanical Integrity Group of the Technology and Design Department. In 2008, he joined the Department of Mechanical and Aerospace Engineering at the University of Strathclyde as a Lecturer. In recognition of his research achievements, he was promoted to Senior Lecturer (Associate Professor) in 2010, and then Reader in 2015. Since joining Strathclyde University in 2008, he has established and leads the Structural Integrity and Life Assessment Research group. He has built a major and sustainable research portfolio in structural integrity engineering, particularly in the field of fracture mechanics, shakedown, ratchetting, high temperature creep and fatigue analysis. As a pioneering developer of the Linear Matching Method (LMM), which can be applied to the entire sequence of procedures required for high-integrity structural life assessment, he has successfully transferred the LMM from research into the engineering industry where it is being used to improve and optimize structural life assessment procedures. He holds up to two million pounds in research funding as the principal investigator from the UK Engineering and Physical Sciences Research Council (EPSRC), Royal Society, Royal Academy of Engineering, EPSRC Nuclear EngD Centre, and many industrial partners including EDF Energy, Rolls-Royce, and Siemens UK.

陈浩峰教授,博士,英国 Strathclyde 大学机械与航空系博士生导师,Reader,华东理工大学讲座教授,英国皇家工程学院高级研究员,美国 ASME 压力容器技术杂志副主编,国际机械工程师学会会士(Fellow),英国高等教育学院会士(Fellow),英国特许工程师。陈浩峰教授 1994 年获清华大学工程力学系工程力学专业和经济管理学院经济管理专业双学士学位,1995 年和 1998 年分别获得清华大学工程力学系固体力学专业硕士和博士学位。毕业后先后在新加坡南洋理工大学以及英国莱斯特大学从事博士后研究员工作,2006 至 2008

年在英国阿尔斯通公司(ALSTOM)担任高级工程师。自 2008 年加盟英国 Strathclyde 大学,组建并领导了结构设计和安全评估研究团队。所建立的用于材料及结构设计和完整性评估的新型数值方法及相应规范和软件,达到国际领先水平。陈浩峰博士在材料及结构完整性评估数值方法,高温金属结构的蠕变疲劳,高温复合材料的安全评估和寿命预测,含裂纹/焊接结构的完整性,以及在极限安定分析,高温结构棘轮破坏分析等方面做出了开创性的研究成果,发表论文 109 篇, 获得了国际同行的广泛认可,多次担任国际会议的分会主席。近年来获得了英国工程和物理科学研究理事会(EPSRC),英国皇家学会(Royal Society), 英国皇家工程学院(RAE),英国能源公司(EDF Energy),劳斯莱斯公司(Rolls-Royce), 西门子(Siemens)等国际知名公司近 2 百万英镑(2 千万人民币)的科研经费支持,作为项目负责人承担英国国家级科研项目 7 项。

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