# education

## Looking for further learning opportunities

I am a PhD candidate at Shanghai Jiao Tong University, China.

My research intrest is Digital Image Correlation (DIC).

I am looking for the opportunities for further study.

My email: libangjian#sjtu.edu.cn

Thank you for considering my request.

All the best to you.

## Discrete Element Modelling (DEM)

Choose a channel featured in the header of iMechanica:

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

Thank you

## Large Deformation - Definition of total work energy density

Choose a channel featured in the header of iMechanica:

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.

Where,

PK2 is the second piola kirchoff stress tensor

E is the Green-Lagrange strain tensor

Thanks,

Prithivi

## Plane_Stress, Plane_Strain and 3D - Simple doubt..

Choose a channel featured in the header of iMechanica:

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

Choose a channel featured in the header of iMechanica:

Hello,

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.

## 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.

## 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.

Regards,

MD Aftab

## 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

Choose a channel featured in the header of iMechanica:

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

Choose a channel featured in the header of iMechanica:

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

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

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