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Do you know how to model fork support?

Do you think this is correctly modeled as fork support (picture)

minor axis bending- restrained, torsion - restrained , free to warp

 

 

Lateral torsional buckling of I beams with restraint

I am looking to model buckling of I steel beams with restraint in abaqus. But I do not know how to make rigid connections between the steel members. 

 

Why is the other beam( beam with fixed supports) not stressed? How do i define contact between the two beams.

"Plane Remains Plane" boundary condition in Abaqus

I am working on micromechanics modelling of steels. I need to implement  a "plane remains plane" kind of homogeneous boundary condition on some edges of my RVE of Dual Phase Steel. How can i do it by using *Equation option in Abaqus? I want to understand what all and how the nodes needs to be constrained? I am aware of "Planar Constraint" plugin in Abaqus, but some how it is not working for my RVE, so i want to go via the *EQUATION route. Any help would be greatly appreaciated.

 

Thanks ,

Danish 

c.tasan's picture

MSc, PhD and Post-doc Vacancies in Max-Planck Institute @ Dusseldorf, Germany

Openings at various levels are immediately available in Max-Planck Institute for Iron Research, for projects on experimental micro-mechanics and/or alloy design. The positions are in the group of Cem Tasan (Adaptive Structural Materials), in the Microstructure Physics and Alloy Design department of prof. Dierk Raabe.

For more details on the openings and the group, please visit http://asm.mpie.de.

For more information regarding the institute, please visit http://www.mpie.de 

Underlying Material Response for Lüders-Like Instabilities

► The underlying material response of partially unstable materials is measured. ► This is done for Lüders deformed steel and a shape memory alloy. ► They both exhibit an up-down-up response. ► The extracted responses used in numerical models reproduce the structural responses.

Model steel phase change and residual strain and stress using abaqus

 

Hi, I'm a Mechanical Engineering student and I need to learn how to create a simulation of the martensitic transformation as a result of quenching of steel using Abaqus.

I'm just trying to get as much information as I can on my own but I want to ask for some advise; at this time what I have found is that I may need to use some Abaqus user subroutines as UMAT or VUMAT ir order to succed on the simulation but I want to know if theres any other way to avoid using them.

Corrosion rates of reinforcing steel in cracked concrete

Hi all,

 

In the course of our project, we are monitoring the corrosion behavior of steel reinforcement in cracked concrete, while exposed to simulated sea water. Recent results are posted on our blog,  http://microlab-m3c4.blogspot.nl/ ! Be sure to check them out! For more information, you can contact us, or follow us on twitter @MicrolabM3C4.

 

Cheers!

New Editorial Structure for Construction and Building Materials Journal

Professor Luigia Binda, one of the foremost authorities in masonry research, and in particular the restoration of historic buildings, steps down from her role as European Regional Editor of the journal. Professor Andrew Boyd, from McGill University, Canada and Professor Amir Mirmiran from Florida International University, USA who served as North American Regional Editors for the past four years, are also retiring.

Manaliac's picture

Prediction of failure in loaded thin steel plates

 

Hello everyone,

 

I am curretly working on predicting the failure in thin loaded plates. The plates are impacted by a hemispherical rigid cylinders at a low speed (4.53 m/s <--> Free fall from 1.05 meter) and are perforated experimentally at their center.

I tried to simulate failure with ls-dyna on a shell based model ( the sheet is very thin : 1 mm thickness Vs  130 x 130 mm ), but it seems that the failure strain measured on the tensile tests is underestimated ( the curves after the begining if necking are false).

Miniature disk bend testing

Hello everybody

     Thanks for your loads of response and I am glad that you have given such valuable data regarding MDBT.

M ostly I need some more data reagarding MDBT and its fixture design.What should be the exact design procedure to perform this test and what should be the exact circumstances and precautions need to be taken are the concerned area where I need your help.
Its hearty request to help me sort out my problem and let me help in this regard.

Lath martensite

Choose a channel featured in the header of iMechanica: 

Does any one knows a good reference about lath martensite?

Why we see the retained austenite? why doesn't it transformto martensite? What's its effect on the phase transformation? Does the plasticity change the morphology of the transfromation? How about the speed of the transfromation? When should we expect to see the lath martensite? What's the effect of the diagonal terms in the transformation matrix? What's the effect of the shear components? Is there any difference between 2d and 3d simulations, and which one is more realistic?

Simulating explosions

Recently Henry talked about software that could be used to simulate explosions and introduced CartaBlanca. Luming asked whether anyone had used the software, how good it was, and whether one needed Java to implement models into CartaBlanca.

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