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    學術報告預告:Advanced Direct Method for the Structural Design and Life Assessment of Component

    發布時間: 2017-04-17     作者:nic    點擊次數:

    報告題目:Advanced Direct Method for the Structural Design and Life Assessment of Component

    報告人:Professor Haofeng Chen(陳浩峰教授)

    英國Strathclyde大學

    時間:2017年4月19日(周三)上午9:30-11:00

    地點:新主樓會議中心第三會議室

    報告摘要:

    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.

    為了改善結構設計與壽命評估的現有方法,并推進英國在機械結構完整性評估領域的國際領先地位,尤其是在支持減排目標所需的更多高溫結構應用,報告人和他的研究團隊建立了一系列新穎的數值直接方法并開發了相應的用于機械結構設計與壽命評估的工程軟件,進一步完善了用于高溫結構安全評估的英國R5規范以及用于常溫含缺陷結構完整性評估的 R6規范?;诰€性匹配法(LMM)框架發展起來的這些新穎的數值直接方法,可以解決結構設計與壽命評估的一系列問題,并已成功的應用到英國工程行業,包括英國 EDF 能源公司和勞斯萊斯公司等。他們資助并使用這些數值方法,用于改善和優化現有的結構完整性評估程序。本報告詳細介紹了這些用于機械結構設計和完整性評估的新型直接方法在理論上,數值方法上和軟件開發上的進展,以及在解決結構完整性評估中遇到的不同問題的具體應用,包括極限與安定分析,棘輪破壞分析,交變塑性,低周疲勞分析,蠕變斷裂分析,蠕變應力松弛,以及蠕變疲勞交互作用分析。通過對一系列不同結構的實際應用,包括過熱器熱交換器組件,帶凹坑缺陷的管道,含裂紋結構和焊接結構的完整性評估等。作為 R5 最新規范的一部分,線性匹配法及其相應的軟件進一步簡化了用戶輸入要求,降低了完整性評估成本和時間,提高了結構壽命評估質量和精度,從而極大改善了結構完整性評估的現有方法。

    主講人簡介:

    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.

    陳浩峰教授,博士,英國 Strathclyde 大學機械與航空系博士生導師,Reader,華東理工大學講座教授,英國皇家工程學院高級研究員,美國 ASME 壓力容器技術雜志副主編,國際機械工程師學會會士(Fellow),英國高等教育學院會士(Fellow),英國特許工程師。陳浩峰教授 1994 年獲清華大學工程力學系工程力學專業和經濟管理學院經濟管理專業雙學士學位,1995 年和 1998 年分別獲得清華大學工程力學系固體力學專業碩士和博士學位。畢業后先后在新加坡南洋理工大學以及英國萊斯特大學從事博士后研究員工作,2006 至 2008

    年在英國阿爾斯通公司(ALSTOM)擔任高級工程師。自 2008 年加盟英國 Strathclyde 大學,組建并領導了結構設計和安全評估研究團隊。所建立的用于材料及結構設計和完整性評估的新型數值方法及相應規范和軟件,達到國際領先水平。陳浩峰博士在材料及結構完整性評估數值方法,高溫金屬結構的蠕變疲勞,高溫復合材料的安全評估和壽命預測,含裂紋/焊接結構的完整性,以及在極限安定分析,高溫結構棘輪破壞分析等方面做出了開創性的研究成果,發表論文 109 篇, 獲得了國際同行的廣泛認可,多次擔任國際會議的分會主席。近年來獲得了英國工程和物理科學研究理事會(EPSRC),英國皇家學會(Royal Society), 英國皇家工程學院(RAE),英國能源公司(EDF Energy),勞斯萊斯公司(Rolls-Royce), 西門子(Siemens)等國際知名公司近 2 百萬英鎊(2 千萬人民幣)的科研經費支持,作為項目負責人承擔英國國家級科研項目 7 項。

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