3D Auxetic model
An interesting animation by Adrian Rossiter of a 3D model showing 2D auxetic behaviour.
Blog posts
Maxwell stress of a dielectric elastomer subjected to electric field
Hello everyone,
As reported in some references, Maxwell stress of a dielectric elastomer subjected to electric field can be determined by the following formula
P=e*E^2 (1) -------e=e0*e1, e0 is the dielectric permittivity of vacuum, e1 is the relative dielectric permittivity of the elastomer, and E is the applied electric field.
thermal analysis of welds using ANSYS
HI EVERYBODY,
I HAVE BEEN TRYING TO DO THE THERMAL ANALYSIS OF WELDS COUPLED WITH THE MECHANICAL ANALYSIS TO DETERMINE THE RESIDUAL STRESSES RESULTING IN IT.I HAVE COUPLE OF DOUBTS IN THIS CONCERN-
1.THERE IS THE USE OF FILLER MATERIAL-I KNOW ELEMENT DEATH AND BIRTH METHOD IS TO BE USED BEHIND IT,BUT DONT KNOW HOW TO APPLY IT
2.SECONDLY THE MOVING HEAT SOURCE-WHETHER ANY GAUSSIAN DISTRIBUTION IS TO APPLIED AND HOW TO GET A MOVING HEAT SOURCE.
3.WHETHER ALL CONVECTIVE AND RADIATIVE BOUNDARY CONDITIONS HAVE TO BE APPLIED ON OTHER SURFACES SIMULTANEOUSLY.
Fracture of Rubber. Lecture 2
Fracture mechanics without invoking any field theory. In Lecture 1 on Fracture of Rubber, we considered the extension of a crack in an elastic body subject to a load. Following Rivlin and Thomas (1953), we regarded the elastic energy stored in the body as a function of two independent variables: the displacement of the load, and the area of the crack. The partial derivative of the elastic energy with respect to the area of the crack defined the energy release rate.
Lavrentiev phenomenon
Dear mechanicans,
Can anyone explain to me what is Lavrentiev phenomenon? Thanks for your help.
WaiChing Sun
Generate softening curve
Hello,
I seek help from the forum regarding the following. Because I am very new to mechanics.
I have a continuum damage mechanics model with me. I have set up a problem of a typical three point bending test on a notched beam. The notch in the center of the specimen and extends from the bottom face up to the middle of the thickness. It is a plane stress problem. Now I want to simulate load-displacement curve obtained from the experiment (s).
Fundation of Fracture Theory <断裂理论基础>
Actually, I don't know much about Fracture Mechanics. This is the book that my previous teach in Beijing Inst of Tech recommended it to me. I think it is good.
Abaqus Quistio
I am working on Dental Implants and i want to define interaction in abaqus between an implant and the bone surrunding it. I am using Abaqus CAE to do it and i want to define frictional interaction with penalty method but I have problem with the penetration of implant in the bone. I've tried all the possible contact definitions such as surface to surface or node to surface. Sometimes Abaqus gives me some incredible answers for example pulling out the implant!!!! Please help me with this problem. Thank you....
Postdoctoral Positions in the Post-Graduate School at the Otto-von-Guericke-University Magdeburg, Germany
A number of 3 year research schoolarships and PhD positions in the areas of mechanical engineering, process engineering and applied mathematics is available in the Post-Graduate School "Micro-Macro-Interactions in Structured Media and Particle Systems", Otto-von-Guericke-University Magdeburg, Germany.
Further information can be found at http://www.uni-magdeburg.de/gkmm/free-position-new-gk.htm