User-defined, ANSYS
I am writing user-defined element using ANSYS. Are any general guidelines available? Kindly help me.
Subramanian
The Fundamental Physical Bases of the WR Approach (and, Consequently, of FEM) in General
It has been quite some time (more than 1.5 years) that I had touched upon the topic of the physical bases of FEM in general, and of the general weighted residual (WR) approach in particular, at iMechanica (see here).
The position I then took was that there is no known physical basis at all for the WR approach---despite its loving portrayals in mathematical terms, or its popularity.
Cracking growth prediction for a structure with creep and plasticity deformation
My question is how we can predict the crack growth rate and direction for a structure under cyclic loading in such a way that both plasticity and creep has been built in it.
Call for papers: Journal of Mechanics and MEMS
Journal of Mechanics and MEMS, Published by Serials Publications, http://www.serialspublications.com/journal_form.asp?jid=286&jtype=1
Editor-in-Chief
Prof. Bohua Sun
Journal Club Theme of February 2009: Finite Element Methods in Quantum Mechanics
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Welcome to the February 2009 issue. In this issue, we will discuss the use of finite elements (FEs) in quantum mechanics, with specific focus on the quantum-mechanical problem that arises in crystalline solids. We will consider the electronic structure theory based on the Kohn-Sham equations of density functional theory (KS-DFT): in real-space, Schrödinger and Poisson equations are solved in a parallelepiped unit cell with Bloch-periodic and periodic boundary conditions, respectively.
Why do we often use Jaumann rate instead of Truesdell rate?
In the attachment, we show that Truesdell rate can by simplified to Green-Naghdi rate by assuming F .=. R and can be further simplified to Jaumann rate by assuming W .=. R(.)R(T), where .=. means approximately equal
In a stretch dominant deformation, the three rates give different stress rate. This is usually explained by that we need a different tangential modulus for different objective rate. However, it is hard to understand why we need to change "material" modulus when we use a different "mathematical" form of objective rate as they are all supposed to be equivalent.
FY 2009 Nanotechnology Undergraduate Education (NUE) in Engineering Program Solicitation
The FY 2009 Nanotechnology Undergraduate Education (NUE) in Engineering Program Solicitation has just been released (NSF 09-533). http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=13656&org=EEC&from=home
Call for papers: a series of monograph in the field of engineering mechanics
Advances in Engineering Mechanics (AEM)
a series of monograph in the field of engineering mechanics
published by Nova Science Publishers, Inc, 400 Oser Ave. Suite 1600, Hauppauge NY, 11788-3619, USA
Chief Editor: Prof. Bohua Sun
published by Nova Science Publishers, Inc, 400 Oser Ave. Suite 1600, Hauppauge NY, 11788-3619, USA
Chief Editor: Prof. Bohua Sun
TWO MECHANICAL ENGINEERING FACULTY POSITIONS IN CHILE
The University of Chile invites applications for two full time faculty positions in Mechanical Engineering. Applicants must have deep interest in undergraduate and postgraduate teaching, as well as the purpose to conduct long term, externally funded research programs at international level. Candidates are also expected to maintain fruitful work relationships with industry in their respective areas. According to qualifications, they may be ranked at the Assistant or Associate Professor level. Candidates are sought in two areas:
- Energy: Research interests in conventional or alternative energies, with emphasis in energy conservation, generation or efficient use.