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Discrete Element Modelling (DEM)

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Can I use DEM using Abaqus 6.14?? If yes how?? 

Thank you

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Large Deformation - Definition of total work energy density

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Like we have the elastic strain energy density for small deformations  defined as 0.5* σ :e  .

Is the equation PK2:E valid for the total work energy density for elastoplastic regimes ? If not, what would be a valid equation for total energy density ?

How can we decompose total work density into elastic work and plastic work densities for a large deformation case.


PK2 is the second piola kirchoff stress tensor

E is the Green-Lagrange strain tensor






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Plane_Stress, Plane_Strain and 3D - Simple doubt..

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Hello everybody,

 UPDATE :   Question can be deemed as closed.. :)

                       I have a very simple doubt in 3D model simplification. I believe plane stress and plane strain conditions are the two extreme states to simplify a 3D model to 2D case.

Transfroming applied tractions into statically equivalent nodal force BC

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I am trying to produce results for problems with analytical solution to validate my FE code. One of the problmes is the classical plate with a hole configuration with tractions applied at boundaries. However, presently, I can only impose BC in terms of nodal forces and displacements. Therefore I must transform the applied stress in statically equivalent nodal forces.

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Modeling of Localized Inelastic Deformation 2016 (LID 2016)

Dear colleagues,

on behalf of the course organizer, I would like to bring to your attention to the advanced course on Modeling of localized inelastic deformation that will be taught by Milan Jirásek in Prague, Czech Republic on 19-23 September 2016.

Simpleware at Hartree Summer Schools 2016: Week 2 - Engineering Simulation

Dates: June 27 - July 1, 2016

Venue: The Hartree Centre, STFC Daresbury Laboratory, Warrington, WA4 4AD, UK    [Directions]

School Leaders: Lee Margetts (University of Manchester), Anton Shterenlikht (University of Bristol), and Llion Evans (Culham Centre for Fusion Energy)

Registration Fee: £150

Simpleware are contributing to this event.

h.yazdani's picture

PhD and Master’s Positions in Civil and Materials Engineering at Howard University, Washington, DC

The Sustainable Infrastructure, Geotechnics, and Materials (SIGMa) Lab at Howard University, Washington, DC invites applicants for two PhD and one Master’s positions in geotechnical and materials engineering for Fall 2016 and Spring 2017. Highly-motivated, industrious individuals with strong computational and/or experimental skills, journal/conference publications, excellent English proficiency, and the ability to work both independently and as part of a collaborative team are strongly encouraged to apply.

IIMEC 2016 summer school on "Advanced Material Systems: Experimentation and Modeling"

On behalf of the International Institute for Multifunctional Materials for Energy Conversion (IIMEC) and the Department of Mechanical Engineering at Aristotle University of Thessaloniki, we would like to announce a summer school on Advanced Material Systems: Experimentation and Modeling. The summer school will be held from July 3–9, 2016 on the Aristotle University campus in Thessaloniki, Greece. 

Pressure Difference Calculation in ABAQUS

Hi everyone, 

I am working on ABAQUS to simulate Pipeline Inspection Gauge (PIG) movement in a pipeline via CEL technique. I am unable to find how to calculate Pressure Difference in the pipeline using Abaqus.

If anyone of you can guide me through it.


MD Aftab

Simplified slip-bearing action by using stop ellement in Abaqus

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


Summer School - HPC for Engineering Simulation

The STFC Hartree Centre (in Warrington, UK - located between Manchester & Liverpool) is running 4 high performance computing summer schools from June to July 2016. They are primarily aimed at PhD students and postdoctoral researchers, but are also open to academics and industry at no extra cost. The tuition fees are subsidised by STFC and each week only costs £150. There is a 1 week school on each of the following topics:

Dargazany's picture

PhD position in Mechanics of High Performance (bio)Materials

Our Group of High Performance Materials in Enviormental & Civil Engineering Department at Michigan State University has an openings for PhD positions to work on Multiscale Modeling of Soft Materials starting Fall 2016.


Simple Physics concepts


    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,

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

kourousis's picture

PhD position in Additively Manufactured Metals Plasticity (Extended Deadline: 17 June 2016)

PhD Studentship (4 years) @University of Limerick

Cyclic Plasticity of Additively Manufactured (AM) Metals: Experimental Investigation & Constitutive Modelling

Background & Research Objectives

IMECE 2016: Student Travel Awards and Best Paper Contest

Dear IMECE Attendees:

The Applied Mechanics Executive Committee (AMD-EC) is pleased to announce the 2016 IMECE student travel award and best paper competition.

lavajiitsingh's picture

CFRP/Composite Adhesive lap joint.

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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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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. 

The supports and loads are shown here: Ex-3-9-LoadsAndSupports.png

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?


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