Early this week the number of registered users passed 6000.  Our growth rate remains nearly a constant, about 10 new users per day. In January Teng plotted some basic statistics of iMechanica. 

Senior Scientist – Global
Engineering and Materials Inc. has an immediate full-time opening for this
position in its NJ Office. The ideal Candidate will have demonstrated in-depth
experience in fields of computational mechanics, mechanics of composite, and
advanced structural analysis and design. Experience in commercial FEM
application and customization is considered a plus. The successful applicant
will work on physics-based modeling, thermal-mechanical analysis, and advanced
FEM solver development. Job duties will include: development of advanced FEM
algorithms, modeling and simulation using in-house and commercial software,

An internship position is available in the area of Finite Element Analysis of Elastomers in the Simulation and Modeling Group at Schlumberger, Sugar Land, TX.

I am designing a new course on FEM, to be offered privately in India. It will emphasize fundamentals, and try to supply (or bring out) the physical interpretations behind the mathematical formalisms.

Well-known for its high yield strength, metallic glass often suffers from its low ductility and intrinsic brittleness, as discussed in a recent iMech jClub theme on plasticity and failure in metallic glasses led by Yanfei Gao.

We present a coupled mathematical model of growth and failure of the abdominal aortic aneurysm (AAA). The failure portion of the model is based on the constitutive theory of softening hyperelasticity where the classical hyperelastic law is enhanced with a new constant indicating the maximum energy that an infinitesimal material volume can accumulate without failure. The new constant controls material failure and it can be interpreted as the average energy of molecular bonds from the microstructural standpoint.

In MEMS fields, a need arises in engineering practice to predict accurately the nonlinear response of slender post-buckling beams, especially the nonlinear transverse stiffness. The bistability of the post-buckling beams is excellent in reducing power consumption of micro-devices or micro-systems. However, the major difficulty in analyzing the post-buckling and snap-through response is the intractability of the geometric nonlinear control equations of large deflection beams.