Blog posts
Today is Pi day and Einstein's birthday, again!
Google's logo is very cute today !
Today is defined as Pi day, it is also Albert Einstein's birthday. Besides, today is Japaness lover's "white day".
According to Wiki, "In the 1980s the Japanese National Confectionery Industry Association launched a successful campaign to make March 14 a "reply day", where men are expected to return the favour to those who gave them chocolates on Valentine's Day, calling it White Day for the color of the chocolates being offered."
Lecturer positions at the Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute
The University of Michigan and Shanghai Jiao Tong University have established a Joint Institute in Shanghai committed to building a world-class academic institution with educational and research missions. The UM-SJTU Joint Institute invites applications for lecturers to support its mechanical and electrical/computer engineering programs. With its unique academic mission in China, the JI offers an extraordinary academic environment. The JI is modeled on world-class US universities. The students are among China’s best.
Faculty positions (Asst, Assoc, and Prof) at the Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute
The University of Michigan and Shanghai Jiao Tong University have established a Joint Institute in Shanghai with a commitment to build a world-class academic research and educational institution. The UM-SJTU Joint Institute invites applications for tenure-track (Assistant, Associate, and Full Professor) positions in all emerging fields of mechanical engineering and related disciplines. These positions are open to top caliber applicants from around the world.
Paper by Ellad Tadmor & Nikhil Admal---Atomistic Definition of Stress
For both mechanicians and physicists, linking continuum concepts to the underlying microscopic characteristics of materials has remained a major preoccupation. Certainly, with the recent advent of the so-called "multiscale" modeling approaches, this topic has been brought to a sharp focus. Cauchy stress is one such continuum concept that has courted a fair amount of controversy.
3D Auxetic model
An interesting animation by Adrian Rossiter of a 3D model showing 2D auxetic behaviour.
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.