Hi everyone,
I am looking for papers on the dynamics of AFM cantilevers in contact with non linear material samples. In particular, I am interested in forced armonic vibrations of the catinlevers.
I have seen many papers on intermittent contact (or tapping) which has a number of additional problems w.r.t. the contact mode.
Many thanks for the help.
Pasquale V.
Summer Job for Students in Europe: NSF-sponsored International Research Experience for Students (IRES)
International US-European Joint Study of X-Ray Optics Thermomechanical Stability and Control
Hi
I am intending to make a concrete member model to investigate crack opening in tension zone. First, I wanted to use crack propagation model and could not get good result. So, I think that I can do it by using stress/strain principal failure and element removal.
I've tried to fiure out how I can apply this method in my model.
Is there enyone who has experience in this issue? Could you please help me in this matter?
Chao Xu received his B.S. and PhD from Northwestern Poly-technical University (NPU) in 2002 and 2007. He spent one year working as a post-doctoral fellow at University of Canterbury from 2013 to 2014. He is currently a full professor of structure mechanics and aerospace engineering at School of Astronautics, Northwestern Polytechnical University.
His research interests include:
1) structural health monitoring of aerospace structures
2) mechanics and design of composite structures, visocoelastic sandwich structures
These notes were initially written when I taught fracture mechanics in spring 2010, and were updated when I taught the course again in 2014.
You can access all notes for the course on fracture mechanics.
Postdoc position is currently open in my group. The research revolves around bioacoustics of marine animals (mammals and fish). The goal is to understand the mechanics of sound production and hearing. Research directions include formulation of specialized finite element models for biological materials, mesh generation from biomedical images, and models for attenuation in tissues. Funding is available for at least one year. Contact: pkrysl-at-ucsd.edu.
Dear mechanicans,
For non-local continuum, is there a proper approach to determine the size of the REV in experiment? For the classical linear elastic continuum, one can measure the homogeneized stress and strain (or local averaged stress/strain) and compute a homogeneized elastic constitutive tensor. However, I am not sure how to do it for non-local continuum, since the constitutive response is now sensititve to the gradient term. Any comment/suggestion is appreciated.
Regards,
WaiChing Sun
Forthcoming papers of International Journal of Applied Mechanics (IJAM) Vol.2 No.2:
1．“Micro-Constituent Based Viscoelastic Finite Element Analysis of Biological Cells”, F. Cheng, G.U. Unnikrishnan, and J.N. Reddy (Texas A&M University, USA).
2. “Interfacial Shear Effect on Herringbone Pattern of Thin Films on Compliant Substrates”, Jizhou Song (University of Miami, USA)
Hi Everyone,
I have a general question about dynamic strcture problem,
I read from some books that "spatial resolution of high-frequency modes typically is poor by using the conventional finite element spatial domain discretization"?
Could someone explain more on this? Does it because the element usually is not fine enough to capture the high frequency response or...?
Thanks a lot!
BR,
Li
