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Publicly-available fatigue test data

Submitted by Mike Graham on
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Fatigue
experimental data

Can anyone help point me to publicly-available fatigue or fracture test data? I am interested in obtaining a variety of data for statistical processing. It seems many authors have used the data collected by Virkler and Hillberry which seems to be widely used, but I have not found raw data for their tests so far; is this data available somewhere for me to use? Any help is very appreciated.

Moving Heat Source in Gmaw

Submitted by PATELAM on
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Moving Heat Source in Gmaw process

Dear Sir/Madam,

       

i m quite new wd the ansys and was trying to simulate a problem of moving heat source in GMAW and has to move wd some Heat flux on  the plate .how could i model heat distribution of the GMAW and how could i move it wd some velocity.. 

i hope i m clear,plz help me out.

 Thank You,

Amrat Patel

patel_am [at] yahoo.com (patel_am[at]yahoo[dot]com)

Journal Club Theme of December 2009: Impact Behaviour of Materials with Cellular Structures

Submitted by Henry Tan on
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impact
Journal Club Forum
cellular materials

Welcome to the forum! Discussion topics were suggested initially as follow:

Metal foams, cell deformation (bending, buckling, plasticity and fracture), constitutive stress-strain behaviour of cellular materials, energy absorption, hypervelocity impact, shock wave behaviour, 1D shock modelling, shock attenuation, shock enhancement, Material Point Method (MPM) simulation and microscopic tomography experimental observation;

and later were extended to many related:

VUMAT for Nitinol --- why VUMAT and not UMAT?

Submitted by cece83 on
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Nitinol
VUMAT
Abaqus/Explicit

Dear all,

 I'm new in imechanica. I need some informations about VUMAT for Nitinol. I would like to implement in fortran a subroutine for the behaviour of shape memory alloy.I looked for some subroutines already implemented but they have been developed in the implicit way.

It's true that with the VUMAT(explicit) I could have some problems of stability and convergence.Could someone suggest me any reason to make this model in the VUMAT?I know that in VUMAT I can't redifine the time increment so before running the analysis It's important to pay attention on Dt.

Yield line theory application to a edge fixed disk by central load

Submitted by jason Zhu on
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Yield line theory

Dear all,

   I am trying to apply the Yield line theory to analyze the fracture of a disk by central load, F.

   Do anybody know the yield line on the disk? I searched some books to find most references focus on rectangular plate rather than disk.

   All suggestions are welcome. Thanks.

 

Meshfree model of shear at two-layer material interface

Submitted by Olumide on
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multilayer
Shear
mesh free

Hello IMechanicans,

 I am interested in modelling shear response to mechanical stress at the interface of a two layer matrial e.g. the skin of the human hand, where the superficial layer of tissue slides over the deeper layer, while retaining some sort of attachment to it. 

Does anyone know of any research papers that have investrigated this topic? I would rather base my work on the advances made my others, instead of reinventing the wheel.

Thanks,

- Olumide

 

3D Composite model in ABAQUS

Submitted by parimal_maity on
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ABAQUS/CAE
composite

Dear Abaqus Users,

I would like to model 3D composite structures using Hashin Damage model in ABAQUS. I have seen in ABAQUS manual that Hashin damage model is applicable only for shell element. I would like know whether I can use 3D element available in ABAQUS. Any help would be higly appreciated.

Parimal

Research Scholar

Michigan State University.

 

 

 

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