An interesting paper
I came across this very instructive article, so I decided to share it here.
Enjoy!
Blog posts
ABAQUS - Input file - Definition of nonlinear spring (SPRINGA)
Hello all,
I am currently working at a structural dynamic problem with Abaqus/Explicit. The work involves an impact and in this context the goal is to connect two rigid bodies (with their constraint, mass and velocity field) to each other with a NONLINEAR SPRING; the element used is the so called SPRINGA element.
Using File-->Import-->Model I have imported the input file, which I have previously modified in the following way:
*Spring, elset=SPRING-spring, nonlinear
0,0
1000,0.002481
2000,0.004963
Postdoctoral Position Opening at Stanford University
Prof. Wei Cai at the Mechanical Engineering Department of Stanford University is seeking a postdoctoral researcher to lead a project on the modeling of dislocations in strained semiconductor structures. The major task of this project is the development of an interface between the Dislocation Dynamics program (ParaDiS) with a general purpose Finite Element Method (FEM) program (such as ABAQUS). Molecular dynamics simulations may be required to provide physical input to the Dislocation Dynamics model.
Call for abstracts ICCM2015, Auckland, New Zealand: computational limit and shakedown analysis
Dear Colleagues,
We are inviting you to submit abstracts on ICCM2015, Auckland, New Zealand:
MS-008 Computational Limit and Shakedown Analysis.
We are looking forward to your presentations at our symposium.
Best regards,
Canh Le
rate-state dependent friction in ANSYS
Dear collegues
a quick question:- I am playing with continuum models of Contact (Hertz, Westergaard and so on) and friction laws. However, I prefer for my students to use ANSYS FEM code. In Ansys there is standard Coulomb, rate-dependence but not rate-state (unless one codes some user subroutines). See
https://www.sharcnet.ca/Software/Fluent14/help/ans_ctec/Hlp_ctec_realke…
Enforcing tie constraint
Dear iMechanica users,
I have a problem which I would appreciate any input on how to solve. I have an indentation problem, in which I indent a cell with an enclosing membrane. Therefore, I create contact between the (rigid) indenter and membrane, and tie the membrane and intracellular solid elements together. The model is an axisymmetric model, with CAX3 and CAX4R making up the intracellular axisymmetric solid elements and SAX1 the axisymmetric membrane.
Simpleware Australia Workshops
Simpleware will be running a series of free workshops in Perth, Sydney and Melbourne from March 23rd to April 1st 2015
These will include an overview of using the software to visualise, analyse, process and generate models from 3D image data (MRI, CT, micro-CT...). Learn how to obtain very high quality models from image data, how to integrate CAD objects with images, how to calculate effective material properties using Finite Element-based homogenisation techniques, and about exporting robust FE and CFD meshes for simulation in other software.
"A stiffness degradation model for cracked multidirectional laminates with cracks in multiple layers"
Free download until April 7, 2015, a new model for stiffness degradation in composite laminates.
http://www.sciencedirect.com/science/article/pii/S0020768314004843
Revisiting pyramid compression to quantify flexoelectricity: A three-dimensional simulation study
Flexoelectricity is a universal property of all dielectrics by which they generate a voltage in response to an inhomogeneous deformation. One of the controversial issues in this field concerns the magnitude of flexoelectric coefficients measured experimentally, which greatly exceed theoretical estimates. Furthermore, there is a broad scatter amongst experimental measurements. The truncated pyramid compression method is one of the common setups to quantify flexoelectricity, the interpretation of which relies on simplified analytical equations to estimate strain gradients.
Contact problem
Hello
Iam trying to model an orthodontic apparatus movement. Can anyone help me how to choose the type of interaction between the three parts. In attached the assembly. THE steps are : the ring will be opened then it will descend finally the ring will return to its initial position can anyone tell me how to choose interaction properties. Thanksa lot