Numerical Analysis of Aeroacoustic Noise for High-Speed Face Milling Cutters in Three Dimensional Unsteady Flow Fields Ji chunhui Liu Zhanqiang* Aeroacoustic noise produced by high speed face milling cutters is a serious environmental concern. This paper develops a modeling approach to investigate the aeroacoustic noise generation and propagation by the idling face milling cutters. The approach consists of two parts: (1) an aerodynamic model for evaluating the flow fields based on the Navier–Stokes (N–S) equation and (2) an aeroacoustic model for predicting the acoustic noise by using the Ffowcs Williams and Hawkings (FW–H) equation. Both the steady mode with the multiple reference frames (MRF) model and the unsteady mode with the sliding mesh technique by introducing steady flow variables as its initial fields are simulated. The cutter gullet regions and the insert rake face regions are found to be the primary contributors in noise generation through spectral analysis of noise sources. The acoustic noise in face milling is significantly affected by the cutter diameter and the number of cutter teeth. The noise directivity is found in vertical plane, and the irregular tooth spacing can spread the maximum sound power at the rotating frequency to higher frequencies. In addition, experiments are conducted to measure the acoustic noise from two high speed milling cutters. It is found that the experimental results are generally in good agreement with the simulations. Keywords: face milling cutters, aeroacoustic noise, computational fluid dynamics 2012-Numerical Analysis of Aeroacoustic Noise for High-Speed__ Face Milling .pdf
过年回来有1个多礼拜了，基本是在挖空心思地写NSFC Proposal，一个字“累”。 过年回来第一个兴奋的事情是一篇论文被Transactions of the ASME, Journal of Manufacturing Science and Engineering录用。能在这个杂志发表一篇论文一直是我期待的事情，该杂志应当是机械工程领域加工制造方向的顶级期刊，非常被机械工程界认可，尽管影响因子不高，这个可能与ASME的旗下的期刊是季刊和审稿时间过长有关。 具体过程情况汇报一下：11年3月投稿，11年11月返回Major Revision(审稿很到位严格，Comments很正面)，11年12月提交Revision,12年1月底录用。过程整整用了将近1年，时间很漫长。希望对科学网学术达人们投稿到该期刊有点帮助！ 中间还帮助该期刊审稿一篇，不幸的是被我Reject，不过给了很多进一步提高该论文的方案和思想，希望对他们有所帮助！ 发现在科学网开博以来前四个博文基本与学术论文发表有关，这可能与我近一年的工作重心与此有关，哈哈。 新年开始了，再次祝福自己的NSFC，Paper，科研，产品开发，一切顺利，家人健康！ 也祝福科学网的朋友们身体健康，科研顺利！
ASME 2010 International Mechanical Engineering Congress Exposition http://www.asmeconferences.org/Congress2010/index.cfm Abstract Submission: Deadline: March 1, 2010 Topics include: Track 1 Advances in Aerospace Technology Track 2 Biomedical and Biotechnology Engineering Track 4 Design and Manufacturing Track 5 Electronics and Photonics Track 6 Nano-Energy Track 7 Energy Systems: Analysis, Thermodynamics and Sustainability Track 8 Engineering Education and Professional Development Track 9 Engineering to Address Climate Change Track 10 Fluid Flow, Heat Transfer and Thermal Systems Track 11 Dynamic Systems and Control Track 12 Mechanics of Solids, Structures and Fluids Track 13 Micro and Nano Systems Track 14 New Developments in Simulation Methods and Software for Engineering Applications Track 15 Processing and Engineering Applications of Novel Materials Track 16 Recent Advances in Engineering Track 17 Safety Engineering, Risk Analysis and Reliability Methods Track 18 Sustainable Products and Processes Track 19 Transportation Systems Track 20 Sound, Vibration and Design Track 21 Posters
National Academy of Sciences, Washington, DC Wednesday, April 16, 2008 to Friday, April 18, 2008 On April 16, 2008, ASME convened more than 120 engineering and science leaders from 19 countries representing industry, academia and government in Washington, DC to imagine what mechanical engineering will become between now and 2028. They identified the elements of a shared vision that mechanical engineering will collaborate as a global profession over the next 20 years to develop engineering solutions that foster a cleaner, healthier, safer and sustainable world. The Summit was preceded by an environmental scan on trends and issues expected to impact engineers over the next 20 years. To view this scan, please click here . A final report of the Summit is available - 2028 Vision for Mechanical Engineering: A report of the Global Summit on the Future of Mechanical Engineering . To view this report, please click here . To view the Global Summit Video please click here . Global Summit on the Future of Mechanical Engineering
标签: ASME
