English
管理与服务机构
机关部处 群团组织 直附属机构
教育与研究机构
岳麓书院 经济与贸易学院 金融与统计学院 法学院 马克思主义学院 教育太阳集团官方网站研究院 体育学院 中国语言文学学院 外国语学院 新闻与传播学院 数学学院 物理与微电子太阳集团官方网站学院 化学化工学院 生物学院 机械与运载工程学院 材料太阳集团官方网站与工程学院 电气与信息工程学院 信息太阳集团官方网站与工程学院 建筑学院 土木工程学院 环境太阳集团官方网站与工程学院 工商管理学院 公共管理学院 设计艺术学院 机器人学院 经济管理研究中心 化学生物传感与计量学国家重点实验室 国家高效磨削工程技术研究中心 汽车车身先进设计制造国家重点实验室 国家电能变换与控制国家工程技术研究中心 机器人视觉感知与控制技术国家工程实验室
校园生活
当前位置: 首页 >> 校园生活 >> 学术活动 >> 学院讲座 >> 正文
统计数据 / lectrue notice
  • 排序 学院 发文量
    1 机械与运载工程学院 208
    2 物理与微电子太阳集团官方网站学院 208
    3 岳麓书院 184
    4 化学化工学院 178
    5 材料太阳集团官方网站与工程学院 90
    6 数学与计量经济学院 88
    7 土木工程学院 75
    8 信息太阳集团官方网站与工程学院 68
    9 教务处 47
    10 建筑学院 40
  • 排序 学院 发文量
    11 生物学院 40
    12 经济与贸易学院 38
    13 电气与信息工程学院 36
    14 工商管理学院 28
    15 外国语学院 15
    16 法学院 15
    17 新闻传播与影视艺术学院 9
    18 研究生院 9
    19 经济与管理研究中心 6
    20 马克思主义学院 5
    21 中国语言文学学院 4
机械院:Integrated modelling of the laser metal deposition (LMD) process for 3D printing of critical components with alloy powders
学术地点 机械与运载工程学院316 主讲人 曾泉人研究员(英国思克莱德大学)
讲座时间 2019年10月13日上午10:30

10月13日英国思克莱德大学曾泉人研究员学术报告

报告题目:Integrated modelling of the laser metal deposition (LMD) process for 3D printing of critical components with alloy powders

时间:2019年10月13日上午10:30

地点:机械与运载工程学院316

报告人:曾泉人研究员(英国思克莱德大学)

报告人简介:Dr Quanren Zeng is currently a Research Associate from the Department of Design, Manufacture and Engineering Management (DMEM), University of Strathclyde, UK. He received his BS, MS and PhD degree in Mechanical Engineering from the Northwestern Polytechnical University(China) in 2004, 2007 and 2012 respectively, and also a PhD degree in DMEM, University of Strathclyde (UK) in 2015. His research interest is in the broad area relating to advanced manufacturing, with a focus on additive manufacturing for metal advanced aerospace-used alloy powders, precision engineering & surface integrity for difficult-to-machine materials. Apart from 1 book chapter and 1 book translation, Dr Zeng has also published over 30 journal or conference papers in the mechanical and manufacturing field, including IJMS, J of Eng. Manu., ASS, etc. He is also a reviewer for international journals, e.g. Additive Manufacturing, Journal of Manufacturing Review, Advance in Mechanical Engineering, Optics & Laser Technology, Industrial Lubrication and Tribology, International Journal of Lightweight Materials and Manufacture. He recently received Advance Forming Research Centre “Route to Impact” funding and StrathWide2019 Seed funding for investigating the numerical modelling of additive manufacturing process for deposition of metal powders for different applications in aerospace and medical devices.

报告内容:Additive manufacturing (AM), which has completely different materials incremental manufacturing philosophy of fabricating components layer by layer via consolidation of melted powders or wire feedstock, offers a flexible and convenient means to manufacture complex structural components for hard materials. Laser metal deposition (LMD), based on a kind of directed energy deposition (DED), is one of the popular AM technologies for complex metal structural component production. It could deposit geometrically-intricate and fully-densed component directly from its CAD files without using dies, tooling or machining, which greatly reduce the lead-time and production cost. But the LMD process is complicated with a variety of factors; accurate numerical modelling of LMD process is a challenge due to the involvement of multiple physical processes as well as accompanied mass and heat flows. The consistence and reliability of the deposited components’ quality during the practical production is also not always well maintained yet; trails and errors method will be an expensive and time-consuming way to find the optimal parameter sets to fabricate quality components.

In this presentation, the overall integrated LMD numerical modelling consideration will be introduced in details. Temperature field distributions caused by the moving laser beam and the resultant molten pool on the substrate are analysed. The gas quid/solid interfacial behaviours and subsequent solidification near the molten pool are simulated and compared with the experimentally-deposited tracks/layers. The proposed integrated numerical model and corresponding experiment could help give an insight of the relevant physics of the LMD process and finally facilitate the realization of high quality deposited components with better consistency by using optimized processing parameter sets. The research will be particularly useful for production of the geometrically-complex and functionally-reliable components that with higher demanding requirement in the field of aerospace, high-performance automotive and medical devices.

上一条:土木院:室内环境设计:从公共到个别室内环境
下一条:机械院:Hybrid micromachining - a paradigm shift in micromanufacturing

湖大抖音
湖大微信
湖大微博
XML 地图 | Sitemap 地图