Postdoc position in Paris on generalized continua modelling and experiments
THIS POSITION IS NO LONGER AVAILABLE.
A postdoctoral fellowship is available at Paris Institute of Technology (ParisTech) to work on generalized continua modeling.
Blog posts
Geometric nonlinearity
I am trying to write my own code for geometrically nonlinear analysis of mixed structures (cables, trusses, beams...). I would like to have it as general as possible ie. applicable also to 2D and 3D solids. I am trying to follow nonincremental Newton Raphson procedure from Ansys theory manual, but my computation are not converging.. Can I kindly ask you for advice ?
Here is my flow:
=== Linear analysis ===
(1) inv Kt *F = du
resluts are correct comparing to Ansys
=== Nonlinear analysis ===
while (F_ext - F_int) < 1e-3
(2) u = u +du
Experiment.com: Can molecules make music?
Experiment.com is a crowdfunding site for research (a Kickstarter for science!).
Open to all, a target amount for a project is set, and funds are raised through small individual donations. The success is based on how many people like your idea. It's kind of a fun/alternative idea to traditional grant sources! If you have an interesting idea, I recommend it.
Discrete and smeared approach
I am structural engineering student , working on discrete and smeared model of 1/4 th scale bridge girder using ANSYS software and facing some problems.
Some problems regarding discrete approach are:
1. can I use beam188 instead of link180 for modeling reinforcing steel???
2. what should I use value of shear transfer coefficient for open and closed crack ?? what is criteria for using these coefficient??
Case Studies in Engineering
Share your experience and learn from others'experiences
Share your knowledge with like-minded academics and engineers by contributing a short paper on the practical outcome of a project you’ve been involved in.
Watch the video! http://www.elsevier.com/casestudies
Two PhD positions are available at Iowa State University
Two PhD positions are available at
Iowa State University to perform work on federally funded projects on phase-field
modeling of stress-induced phase transformations, surface-induced phenomena, and interaction between phase transformation
and plasticity using FEM. Positions can be either in Engineering Mechanics program in Aerospace Engineering Department (preferable) or in Mechanical Engineering Department.
Nonlinear viscosity
The attached notes are written for a course on plasticity. When I update the posts, I will write a note on my twitter account: https://twitter.com/zhigangsuo.
VUMAT Double Precision
Hi all,
Can anybody help me out running a VUMAT with double precision?
If I define my variables in VUMAT as double precision and run "abaqus user=... job=..." the values do not match those in the inp file.
On the other hand, if I run "abaqus double user=... job=... " I get the following error:
Abaqus Error: Abaqus/Explicit user subroutines cannot be supplied as an object
file when double precision is used.
Abaqus/Analysis exited with error(s).
I know maybe it's a stupid question but I'd really appreciate if someone could give me a hint.