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jenda_z's picture

Postdoctoral position in topology optimization of pneumatically actuated sensing metamaterials at Czech Technical University in Prague

Fri, 2023-11-03 06:05 - jenda_z
job
#job #postdoc
Topology optimization
metamaterials
pressure actuation
contact
multi-stability

One month left to apply! With Ondřej Rokoš, we are looking for a postdoc to work with us on the computationally-driven design of pneumatically actuated microstructures with applications in active mechanical metamaterials (with sensing capabilities) and soft robotics. To achieve this goal, the project aims to develop new topology optimization techniques combining pressure actuation, internal contact, and multi-stability.

»
ndaphalapurkar's picture

Postdoc opening--Modeling Shock Compaction of Granular Materials

Fri, 2022-02-18 12:29 - ndaphalapurkar
job
granular mechanics
shock compaction
wave propagation
friction
contact

Colleagues,

The Solid Mechanics--Damage and Failure team at Los Alamos National Laboratory is seeking a highly motivated and productive postdoc candidate in the area of shock compaction, with a focus on simulating the microstructure evolution of granular materials using explicit representation of microstructures.

Job ad here

»

PhD in Biomaterials for Aerospace Composites

Wed, 2016-01-27 09:40 - Lee Margetts
job
phd
biomaterials
aerospace
multiscale modelling
Stochastic modelling
Monte Carlo Simulation
Cellular Automata
Finite Element Method
HPC
parallel computing
contact
impact
High Strain Rate Physics

Applications are invited for a fully funded PhD studentship at the University of Manchester to help develop the next generation of simulation tools. These will be used to evaluate the structural integrity of novel aerospace composites under a wide range of operational conditions.

»
mmakaremi's picture

Abaqus contacting thin membrane

Fri, 2015-01-16 04:28 - mmakaremi
Forums: 
Ask iMechanica
Free Tags: 
ABAQUS
thin
contact
membrane

Hello everyone,

I'm a beginner in Abaqus. I must simulate effect of water stream on thin membrane contactin with ground. Which element type do you suggest? Can STRI65 be a good option?

Thanks in advance

Best

»
mmakaremi's picture

Abaqus contacting thin membrane

Fri, 2015-01-16 04:20 - mmakaremi
Abacus
contact
thin
membrane

Hello everyone,

I'm a beginner in Abaqus. I must simulate effect of water stream on thin membrane contactin with ground. Which element type do you suggest? Can STRI65 be a good option?

Thanks in advance

Best

 

»

Rolling Ball

Mon, 2014-03-31 13:22 - naseefo
research
ABAQUS
contact
dynamic rolling contact
rigid body-deformable body contact
contact mechanics; friction; rolling

Hi,

 Please refer to the figure given below. I want model this problem using ABAQUS.

 

»

Abaqus 2d contact model not working

Wed, 2014-02-26 03:34 - winand
Forums: 
Ask iMechanica
Free Tags: 
Plasticity
ABAQUS
contact
2D

Normal
0
21
false
false
false
DA
X-NONE
X-NONE

Hi

 

Sorry in advance, but this will be a long story...
Thank you for taking the time to look at it! :)

 

I have a 2D model that worked fine until a couple of
days ago where I tried changing the mesh a bit. Now when I try to run it aborts
calculation and gives some of the following errors:

 

- There are 14 unconnected regions in the model.

»

Extract natural frequencies in abaqus

Thu, 2014-01-30 05:36 - Davidgc
research
ABAQUS
contact
Composites
Natural frequency
constraints

Hi all,

 I am new in the blog, so I would like to appologies if this post is already published.

 I am doing a research in vibracion-based health monitoring based in CFRP beams. As a part of my research, I am modeling a composite beam in abaqus and apply transient analysis on it. Before I would like to validate my model with a very simple a easy model for this reason I have elaborated this procedure:

»
SIMULIA's picture

Contact Updates in Abaqus 6.13 Webinar Recording

Tue, 2013-09-03 12:02 - SIMULIA
ABAQUS
contact
dassault systemes

Each year our customers look forward to the Contact Update
webinar, and this year we have provided the replay of the webinar right here in
the SIMULIA Learning Community!

 

 

http://bit.ly/NunoRebelo

»

Beam-Shell contact in Abaqus

Wed, 2013-03-20 10:48 - icecube477
Forums: 
Ask iMechanica
Choose a channel featured in the header of iMechanica: 
software
Free Tags: 
contact
Beam
Shell

Hello everybody.

 

I am doing my diploma project and I have to model an off-shore oil-rig in Abaqus. It's a metallic truss-type system. I've defined all of the elements composing the structure as wire elements and the decks as solids. Does anybody know how to define the contact between the decks and the supporting beams? The decks are supposed to be bolted to the beams.

 

 

»

ANSYS Contact Elements

Thu, 2013-02-21 19:25 - Deivyd
contact
tutorial
ansys

Hi,

Please does anyone have a tutorial or an example problem on how to model contact elements in ANSYS?

Thanks for all your help.

»

Simulation of composite delamination caused by impact

Sun, 2012-12-09 18:00 - zhang922
Forums: 
Computational Mechanics Forum
Free Tags: 
impact
delamination
contact

Hi All,

While using LS-DYNA to simulate the impact damage of composites, I have a question about modeling.

I plan to create the model by solid element. Each ply has one element in the thickness direction. The contact between plies is *contact_automatic_surface_to_surface_tiebreak. My question is how to create separate ply models while using this contact. It is clear that common nodes are not allowed. So there might be two possibilities.

»

Frequency analysis with Contact constraint

Tue, 2012-09-11 09:11 - sidd04mech
education
ABAQUS
friction
contact
frequency analysis

Hi,

 

I am trying to analysis a model in ABAQUS with a plate bolted to the Bracket top surface at 4 ends. I have to define contact between them (and also bolted at 4 ends) to get the Modal frequency. But When I searched for it, I got the answer that contact doesn't work with Modal analysis as contact is a nonliner problem and Modal Analysis only solves linear problem.

 

»
Vladislav Yastrebov's picture

Postdoctoral position in computational mechanics, at MINES ParisTech

Wed, 2012-06-20 19:13 - Vladislav Yastrebov
job
contact
postdoc
parallel computing
paris

 

A 1-1.5 year postdoctoral position on the subject "Modeling of contact in parallel computing" is open at Centre des Materiaux, MINES ParisTech.

»

How to update solution-dependat variable (SVARS) during iterations

Wed, 2012-02-08 20:07 - haghighat
research
ABAQUS
xfem
contact
User subroutines in ABAQUS
UEL subroutine
User Subroutine
UEL
UEL ABAQUS
cohesive/XFEM
UELMAT

Hello everyone,

 I am implementing a uel user subroutine in ABAQUS. This uel is for modeling contact in X-FEM framework. Thus, it's a nonlinear problem and I need to store some solution dependent variables during each iteration. I know I can store SDVs in SVARS. But this vector will update at the end of each step, and not during iterations. Anybody knows about this problem?

 I really appreciate if anybody can help me with this.

    Thanks

    Ehsan 

»

use of ABAQUS Explicit - importance of *bulk viscosity

Wed, 2012-01-25 11:03 - pirs
Forums: 
Computational Mechanics Forum
Free Tags: 
contact
Dynamic analysis
cold-formed steel
bulk viscosity

Hello there!

 I am fairly new to ABAQUS but I have been trying to model several experimental set-ups on cold-formed steel beams. I intend to obtain both the elastic buckling critical modes (*buckle analysis), as well as the load parameter corresponding to failure, which i first modelled through a NLGEOM analysis (*STEP, NLGEOM, INC=xxx/*STATIC, RIKS).

»

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