# education

## Simplified slip-bearing action by using stop ellement in Abaqus

Hi
can anyone please advise me to define connector ellements with following details:
Using rigid plastic CARTESIAN element and a STOP element in parallel and The connector behaviour must be:
1- rigid up to the slip force limit Rn
2- slip at the bolts up to ±1 mm at constant force Rn
3- rigid bearing hardening

## Simple Physics concepts

Hello......

I have a small doubt. It may feel silly, but please reply..

Suppose I have a pendulum and it is impacting onto a structure. The mass of pendulum is 'm' and the intiial velocity is 'v'. The condition is that the KE at the time of impact should be 'E'. E= 0.5*m*v2 .

Now i change the mass of the pendulum to m1 correspondingly velocity should be changed to v1 so that E1=E.

Now i need to compare the force transmitted to the structure. F = ma.

## Welding analysis with Abaqus

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Hello everyone,

Hello everyone,

## 7th Summer School on Biomechanics of Soft Tissues: Multiscale Modeling, Simulation and Applications

7th Summer School on Biomechanics of Soft Tissues: Multiscale Modeling, Simulation and Applications
Graz University of Technology, Austria
July 4 - 8, 2016

coordinated by:
Gerhard A. Holzapfel, Graz University of Technology, Austria
Ray W. Ogden, University of Glasgow, UK

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Hi

I want to simulate experimental result of a CFRP [45/0/-45/90]s single lap joint in ABAQUS.

I have given geometry, properties & graphical result in the uploaded images.

Yellow color plate in the joint geometry is the E-Glass end tabs to grab both the ends

of the joint in the hydraulic grips. The loading(shear) is carried out at 0.5mm/min.

Thichness of each ply is 0.12mm; so thickness(T) of one CFRP plate is 0.12*8 = 0.96mm.

Thickness of adhesive layer is 0.15mm.

Overlap length(L) is 10mm.

## Help with a LS DYNA compression test model

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Hi

I amtrying to model a simple compression test om a foam cube with LS DYNA. I have tried a lot of different approaches but there is always something wrong in the model :(. I have managed to get on model up and running, but i am having problems with excessive penetrations! Do anyone have any idea how to fix this?

I have includef the .k file as a text file to this post.

## How to extract angle of twist and shear stress due to torque in Workbench

I set up this model of a shaft with to opposing torque simulating a shaft and pulley system.

Note that the origin (top left) has the rotation X constrained to eliminate rigid body motion and to set a reference of zero twist at that point.

I requested every result that I can imagine, see the Outline here: Ex-3-9-Outline2.png

The torque is shown here: Ex-3-9-TorsionalMoment.png

## VUMAT Algorithm for writing Cockcroft Lathom model

Can someone advise me the algorithm for writing VUMAT for C-L model?  I have doubts mainly in following steps.

1. Will Elastic and plastic predictor step be similar as isotropic hardening model given in VUMAT example pdf?

2. How to couple damage prediction steps?

## ANSYS terminology... confusing

Why ANSYS calls the well known "element coordinate system" with their own term, "solution" coordinate system?

Why ANSYS calls  the well know method of applying a "bias" for mesh refinement with their own term, "inflation"? -- I looked it up. INFLATION: to cause to expand or distend with air or gas.

Why ANSYS calls  the well know method of "partitioning" a solid model with their own term, "slice"? OK, may be "slice" is descriptive, but "inflation"? and "solution cs"?

## Happy , heureux

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Bonsoir,

Je ne sais pas du tout si je pose ma question au bon forum, alors si ce n'est pas le cas, j'en suis désolée.

Mon conjoint et moi comptons acheter un bien immobilier : une villa neuf sur plan (label BBC). Et j'aurais besoin de vos expériance et de votre concernant les différentes étapes d'achat.

Infos qui vous serons peut être utile pour me répondre : nous nous somme marier depuis quelque semaine. Et nous ne sommes pas non plus à la même caisse de crédit . Il est en CDI depuis 3ans, et moi je suis AE.

Voilà ce que je sais :
1) Prendre un premier rdv avec caisse de crédit . d'avoir une idée de notre budget. -> rdv passé : on a une capacité d'emprunt assez limitée (lui seul peut prétendre à un prêt)

2) Recherche d'appartement -> on a trouvé un résidence neuve label BBC qui nous intéresse énormément (mais qui est au dessus de nos moyens whistle: )

3) Prise de rdv avec l'agence immobilière -> il aura lieu cette semaine Voilà pour le moment où nous en sommes.

Supposons que dans résidence neuve se trouve la maison que nous aimerions effectivement acquerir.
Quelles sont les prochaines étapes?

Démarcher les mon établissement de crédit pour avoir le meilleur prêt à un meilleur taux? Quand devons nous faire la demande pour accéder au PTZ? Avant ou après avoir trouvé une la banque ?
Notre apport personnel provient du PEL de mon conjoint, quels avantages cela nous apporte exactement (le PEL)?

Savez vous si en général les prix indiqués [url=http://terre-a-terres.com/programme-immobilier-neuf-haute-savoie/sciez/l... appartement neuf à acheter[/url] sont négociables auprès du promoteur?

J'ai très certainement encore des millions de questions, mais je vais m'arrêter là. Pour le moment cela me semble déjà assez décousu et je n'aimerais pas vous décourager tout de suite lol:

Merci beaucoup d'avoir pris le temps de me lire et à ceux qui pourront me répondre.

## How can I avoid stress concentration at fixed support

I have a cantilever beam, 8 in long, rectangular cross section W=0.75 in, H=1.5 in, E=29 msi, Poisson's=0.3, under uniform line load qy = -50 lbf/in (y direction) entire length, bending around strong axis (zz). Beam theory solution M*c/I gives max. stress = 5687 psi.

I model with ANSYS Workbench, uniform mesh Ex-3-6-3D-Normal-Stress.PNG attached.

If I refine the mesh I only get more and more stress concentration. Expected but how to avoid? I just want to get the same result as M*c/I to show how FEA can predict the same as beam theory.

## An ECCOMAS Advanced Course on Computational Structural Dynamics

We would like to announce An ECCOMAS Advanced Course on Computational Structural Dynamics, shortcourse2016.it.cas.cz . The short course on computational structural dynamics will be held form July 13 to July 17, 2016 in Prague, Czech Republic.

## Are shear-moment diagrams wrong in ANSYS Workbench 16.1 ?

I think I found an ERROR in ANSYS Workbench 16.1 and I hope someone can either CONFIRM or show me what I did wrong.

This is very important because I am teaching this material, but I do not have support from ANSYS, so I am asking for your help.

beam_static_structural.jpg : shows a cantilever beam 8 in long under line load -50 lb/in, E=29 msi, cross section 0.75 in wide by 1.5 in tall.

beam_triads.jpg: element triads clearly show cross section coordinates are aligned with global x-y-z coords

## Seeking a PHD position （with CSC funding）

I'm Xiaoliang Fang from BeiHang University, China, and  I am applying a doctoral study.