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PhD in Biomaterials for Aerospace Composites

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

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

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

Hi,

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

 

Abaqus 2d contact model not working

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

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

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

Choose a channel featured in the header of iMechanica: 
Free Tags: 

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

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

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

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

 

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

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

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).

Periodic Boundary Conditions and Contact Elements with Cohesive Zone Law in Ansys

Hi all,

 

I have a problem with periodic boundary conditions using contact elements with a cohesive zone law in Ansys.

In my micromechanical simulations of an RVE with periodic boundary conditions I would like to have a predefined fracture path. My aim is to realize the fracture path with voronoi cells. There I get problems at the boundary of the periodic domain.

A picture of the simplified problem is attached here:

http://dl.dropbox.com/u/4920002/PBC_CZM.png

 

Problems with 3D contact/contact status

hi all,

I have some problems with contact elements in ANSYS.

My model is a cube of matrx containing two fibres with periodic boundary conditions. The interface between Matrix and Fibre is modeled with contact elements and cohesive zone law. 

In 2-D everything works out just fine when bringing up displacement in x-direction. Here is a movie I made of the Contact Status over the loadsteps:

suitable contact for sph in LS-DYNA

Hi there,

I'm using SPH in LS-DYNA as my tool to simulate the projectile penetrate the box. Both projectile and box are modeled as sph. 

I'm having problem to determine the suitable contact of these two entity.

Could someone please help me... any tips that will help me to tackle this problem is highly appreciated!

 

Thanks... 

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