Dear iMechanica,
Last July I posted a journal club entry on overcoming the traditional challenges in mechanically actuating liquid-crystalline elastomers (http://imechanica.org/node/16853). I'm glad to say we finally got our first manuscript regarding this work published in RSC Advances (DOI: 10.1039/C5RA01039J).
We recently proposed a model for rate and state friction by studying the collective (statistical) behavior of viscoelastic asperities. Various observed features of friction emerge as collective phenomena, without postulating them directly at the microscale. The paper is available at the link below.
http://www.sciencedirect.com/science/article/pii/S0022509614002063
Thank you.
"Hydraulic fracture during epithelial stretching"
I hope some of you may find this work interesting:
http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4206.html
Hi,
I am new in ABAQUS. I tried a lot to find the critical lateral torsional buckling moments from ABAQUS for simply supported Steel I beams. I modelled an I beam with shell element and define the sections. I meshed it by number. Then I did buckle analysis with 4 eigen values in step part. I create boundry condition as a simply supported beam using those node of after meshing and I also applied uniform moment at two end.
But, how do i find the critical moment for LTB? Again, is there any procedure to follow?
Thanks in advance.
We would like to invite you to participate in a symposium on “Modeling and experimental characterization for the behavior of the micro/nanostructured thin films” in ASME 2015 International Mechanical Engineering Congress & Exposition November 13 – 19, 2015 Houston, Texas. The deadline for abstract submission is March 2, 2015.
Organizers:
Danial Faghihi, Institute for Computational Engineering & Sciences,UT Austin
Dear all,
Why we have an oscillating behaviour when calculating stress in FEM?
I saw the sentences in the paper:
'Another reason is that stresses are less accurately predicted than strains in FE simulations. Calculated stresses do also show a tendency for an oscillating behaviour, especially in dynamic explicit simulations.'
'stress is less accurate predicated than strain' is easier to understand, but I was wondering the existence of oscillating behaviour for calculating stress.
Any comments are welcome.
I am trying to model (3D) dressing process in which both the dressor and the grinding wheel are rotating as deformable bodies using ABAQUS 6.13 (Explicit analysis). I want to simulate a small portion from both wheels rotating against each other with general contact. To rotate them I am applying coupling constraint. However, when I apply coupling constraint to rotate the wheels with their respective reference points (RP's), they become rigid in sense that no stresses are developed. Even if I apply only VR3 to RP's, no stresses will develop in the grinding wheel or dressor.
Place: AT&T Executive Education and Conference Center, University of Texas at Austin, Austin, TX
Dates: March 2-3, 2015
One Research Fellow (Post-doc) position is open at the National University of Singapore.
If hired, you will work at Soft Materials Lab @ Advanced Robotics Centre (ARC), which I head.
Job Desription: Conduct research on biomechanics of the human motion, and how to effectively harvest energy from these motions using a soft and stretchable generator. You are expected to perform both theoretical and experimental investigation, produce research papers and perhaps, file patents.
It is our pleasure to invite you to submit an abstract to the symposium on
Architectured Multifunctional Materials and Composites
as part of Track 12 of IMECE 2015, Houston, Texas, November 13-19, 2015. See attached for more details.
The abstract submission deadline is March 2nd, 2015 (final deadline, no extension).
Organizers:
