Postdoc position is available at Columbia University
POSTDOCTORAL RESEARCH SCIENTIST – Mechanics and Fracture of ice sheets
Blog posts
Linear elastic fracture mechanics
These notes were initially written when I taught fracture mechanics in spring 2010. The title of the notes was then "toughness". In revising the notes for the class in 2014, I have changed the title of the notes to "Linear elastic fracture mechanics".
You can access all notes for the course on fracture mechanics.
2nd International Conference of Engineering Against Fracture (ICEAF II), Mykonos, Greece, 22-24 June 2011
2nd International Conference of Engineering Against Fracture (ICEAF II), Mykonos, Greece, 22-24 June 2011
G value for design
Hi all,
I want to know how the G(Gravity) value will taken as 4g or 3g for the design of the structures.
On what basis the value will be selected.
Any calculation or theory about it, plz tell me.
Regards
sagar
SES 2010 Annual Technical Meeting - Call for Symposia
Dear Colleague:
The Society of the Engineering Science is sponsoring the 47th Annual Technical Meeting (SES2010) on October 4-6, 2010 at Iowa State University in Ames, IA. The meeting is held on biannual basis as a standalone meeting to foster and promote the exchange of ideas and information among the various disciplines of engineering and the fields of physics, chemistry, mathematics, bioengineering and related scientific and engineering fields.
finite difference solution of convective boundary layer flow
Hi
i want to solve convection boundary layer flow past a vertical plate problem using Finite difference method, that is, i have to solve momentum (NavierStokes) and energy equations. Most of the boundary layer problem is solved by similarity transform method. That is they convert PDE to ODE then they solve ODE by Runge Kutta Shooting method. I would like to solve the PDE directly.
Momentum Eqn
U_t+U U_x + V U_y = U_yy + Gr T
Energy Eqn
Mechanics
Mechanics is the paradise of
the mathematical sciences
because by
means of it
one comes to the fruits
of mathematics.
Leonardo da Vinci (1452-1519)
Structure of Defective Crystals at Finite Temperatures: A Quasi-Harmonic Lattice Dynamics Approach
In this paper we extend the classical method of lattice dynamics to defective crystals with partial symmetries. We start by a nominal defect configuration and first relax it statically. Having the static equilibrium configuration, we use a quasiharmonic lattice dynamics approach to approximate the free energy. Finally, the defect structure at a finite temperature is obtained by minimizing the approximate Helmholtz free energy. For higher temperatures we take the relaxed configuration at a lower temperature as the reference configuration.