Ellen Arruda, Yonggang Huang, Jennifer Lewis elected to the National Academy of Engineering
Here is the annoucement of the election results this year. Congratulations to all new members!
Is there any dissymetry of lift in the forward flight of the helicopter after applying the cyclic control?
Forums
Dear friends,
I was curious about the time varying loads on the helicopter blades in the forward flight. After reaching lots of books and documents, I came to know that some control (cyclic) is applied to take care of the dissymetry of lift in the forward flight. My question is, if the dissymetry of lift is eliminated by applying the cyclic control or by blade flapping (whatever), then why the load should vary with time for the 90 and 270 position of the blade? Can anybody explain this? Please let me know the justification. I am really curious about it.
Thanks
Call for Abstract Submission to the USNCCM14: Modeling Materials with Coupled Physics
Dear Colleagues:
The 14th U.S. National Congress on Computational Mechanics (USNCCM14) will be held at the Palais des Congrès de Montréal, QC, Canada, July 17-20, 2017 (http://14.usnccm.org/).
As a part of this meeting, we are organizing a mini-symposium to address recent advances in Modeling Materials with Coupled Physics (http://14.usnccm.org/MS709). Topics of particular interest include (but not limited to)
“Deflecting elastic prism” and unidirectional localisation for waves in chiral elastic systems
For the first time, a design of a “deflecting elastic prism” is proposed and implemented for waves in a chiral medium. A novel model of an elastic lattice connected to a non-uniform system of gyroscopic spinners is designed to create a unidirectional wave pattern, which can be diverted by modifying the arrangement of the spinners within the medium.
MIT Multiscale Materials Design Course 2017 / June 12-16, 2017
Spend a week at MIT and earn a MIT certificate. A great opportunity for postdocs and graduate students. Limited number of fellowships available.
June 12-16, 2017
URL: http://professional.mit.edu/programs/short-programs/multiscale-materials-design
A Maugis–Dugdale cohesive solution for adhesion of a surface with a dimple
Article in Journal of The Royal Society Interface · January 2017
One Ph.D. opening in Mechanics of Materials for 2017 Fall
One Ph.D. position will be available in the Applied Mechanics of Materials Lab of Mechanical Engineering Department at Temple University, Philadelphia, PA, USA. The position will start in the coming Fall 2017.
PhD position in Mechanics of Solids and Structures for Fall 2017
A Ph.D position in mechanics of solids and structures is now open for Fall 2017 in Mechanical Engineering Department at the University of New Hampshire. We are looking for highly motivatied students to work on NSF and DoD projects.
The applicant is also qualified for applying for a one-year Fellowship.
Please contact Professor Yaning Li for details.
Email: yaning.li [at] unh.edu
New distortional yield surface model: Application in cyclic uniaxial and multiaxial loading: Rokhgire, Nayebi*, Chaboche
This paper is concerned with the ratcheting prediction for steels. The yield surface evolution is integratedin the elastoplasticity analysis by a new proposed model. First, the new proposed model of DistortionalYield Surface (DYS) is developed and then ratcheting under different uniaxial and multiaxial cyclicloadings is investigated. The capabilities of the DYS model is assessed by using the results of variousstress-controlled and strain-controlled tests under uniaxial loading condition and the cyclic uniaxial experimentalresults of Hassan and Kyriakides (1994a).