Department of Robotics Brain and Cognitive Sciences - RBCS (http://www.iit.it/en/rbcs/)
Italian Institute of Technology - IIT, Genoa
Application deadline: Sept. 24th 2010

Project Description:
Conventionally designed robots are made of metal parts, bearings, levers, gears or other components that are assembled with fasteners and screws, to obtain the desired functionality. An alternative approach is to derive this functionality directly from the properties of the materials and to embed components as, for example, with shape deposition manufacturing. CAD and FE simulations are essential tools to design and optimize the details of the robot's shape.

Hello
I'm a new commer in Abaqus and working on topology shape optimization for dental implantation.I have two user-defined materials for Jaw bone area, and using the stress-increment-controlled methodYoung's modulus of an element is changed according to the following equation (1) with two constraints (2)
E(i+1) = E(i) + k(sigma(i) - sigma_ref)   --- (1)
where k and sigma_ref are constants
E(i+1) = E_min if E(i+1)<E_minE(i+1) = E_max if E(i+1)>E_max    (2)

Hello all,

I need to mount an accelerometer in the test rig for dynamic measurement (machine condition monitoring). I am using MMF make KD41V accelerometer. The machine has limited space and I have to protect the accelerometer from splashing oil due to continuous lubrication. Due to space constraint, i have came up with a design in which a 25mm long, 25 mm diameter hylam material block is used in between machine face and accelerometer. Hylam material acts as insulator too. My question is, if i use such a long material in between accelerometer and machine face, will it affects the reading? Schematically this is shown in the following figure. Please guide me!

-Anoop A D

The group of Mechanics of Solids and Structures at the  University of
Brescia is seeking two candidates for Ph.D. positions. The appointment
is starting on January 1st 2011, application deadline Sept. 15th 2010.

The research topics involve: computational dynamics of solids with
reference to ground motion simulation due to seismic input, multiscale
computational fracture mechanics and discrete dislocation mechanics.

Interested applicants are welcome to send a resume to

Dear all,

 The programme for the course on "Contact mechanics with the CONTACT software", to be held October 28th-29th 2010 in Delft, the Netherlands, is now available via the registration form on our website www.kalkersoftware.org.

Best regards,

Edwin Vollebregt

Qualified applicants are welcome to send CV to gzhu@yorku.ca

SUSHIL SINGH
Address: 417 Reed street
Tuscaloosa, AL 35401
Tel :   (205) 239 1696 E-mail : singh.sushil@live.com

Hello,

       Currently , I am working on the fatigue crack propagation in ANSYS 12.1. Can anybody help me regarding how to get the next cracktip position?

Currently, I am referring to the paper named, “Mixed mode fracture analysis of aluminium repaired panels using composite patches” , Authors : Hossein Hosseini-Toudeshky, Bijan Mohammadi, Hamid Reza Daghayani.

According to this paper, I am using following two equations for calculating the incremental angle of crack propagation (α) :

Refer images.

could somebody help me to get a paper,named 

I used Ansys to model a concrete slab supported on the wood to simulate my experimental vibration test.

The materials are already very close to the real materials, and the Boundary conditions: simply supported wood support. Regarding the contact between wood and concrete, I tried coupling and mpc, all gave close results(natural frequencies). However the Ansys frequencies are all much bigger than the experimental numbers. 

Could anybody give some suggestions on this modeling?  

 Thanks a lot!

I'm hoping that someone can share the physical significance (i.e. type of motion) resulting when the (spatial) velcity gradient L is constant. I'm not certain if L constant wrt to only position or also time. Gurtin (The Mechanics & Thermodynamics of Continua, pp. 107-08) uses this assumption to develop the motion equation given below.

I think (?!) that the resulting motion can include rigid body and uniform stretch but not sure. I'm also wondering if the exponential term, additive decomposition of L into spin & stretch rate, & multiplicative decomposition of F into F = RU = vR suggests a Lie group/algebra relationship for this motion. 

Thanks, 

John

Hello

I was analyzing pavement subjected to traffic wheel load. I was using the load as cyclic pressure. Suppose an amount of pressure with 200 different time frame. But I am not getting the right result as measured. So, would you please help on applying moving load? How can I assigned that load as moving load? where can I find the step load function? how can I determine the initial increment? is it more realistic to simulate the wheel load as dynamic? how can I do that?

Hi

 I am facing some problems with FRANC3D 3.2 as my getting different errors. Does anyone has the older version of FRANC3D i.e. version 2.6.

Furthermore all the manuals are for older version.

Kindly let me know if anyone has.

Thanks

Ayjwat

Dear all,
I had been looking forward to use level sets to keep track of the surface in a simulation, but one thing has me stumped. Since many here work with XFEM, I was hoping someone might have some valuable input.

I want to simulate flows driven by a surface tension. This will typically yield holes, which will close rapidly. At the point at which the hole disappears, the signed distance function will have a discontinuity.
I would expect this to happen in pretty much any fluid simulation, but I can't see any way to handle it.

 Hai,

 i tried to apply hydrostatic pressureon a plate.But the input file showes,it is distributed load .how can i get correct figure i.e, uniformly varying load on the plate

Dear All

 I have a problem with some theories in plate analysis such as bending and buckling of plates.

 you know that in various theories of plates, equations have different order and different number of boundary condiotions must be apply. for example in classisal theory of plates we have 4 B.C.,  and in first order shear deformation theory the number of B.C. are 5.

I am confused, how should I recognize the number of required B.C. in each theory?

Regards

Mansouri

Hello,

      Im doing my M.Tech project on 'Analysis of grinding using nano cutting fluids with ANSYS" .  But ANSYS has to work at nano level.. So how to make programming to make ANSYS to use to solve nano level problems.

Hi,

I am modellling a beam with a  hole in ABAQUS and runs pretty well. Now I would like to model a small area of the beam.

For an example the rectangular area which has been shown in the attachment file. When I model it What should I put as a boundry

conditions ?. I know that you may say that reactions of the beam (namely, Moment, shear, axial force) but I would like to just

investigate this part under pure bending and shear. What should I do? 

A model without  support is unstable ????

It is a crazy idea but how could it be followed?

Thank you,

Parisa

hello all,

i modeled a cantilever column with eccentric loading to simulate half of ordinary column, i get a small displacement at cantilever tip (equals 1/3 of reality,) so i want ahelp a bout updating geometry during analysis in order to getting effect of second order/nonlinear effects due to eccentric load.

thanks for all,

for contacting or sending any information my e-mail address:hany_well70@hotmail.com

best wishes.

hany ghazalah

Dear firends,
I run some abaqus input files and got my odb files(for example 100 odb files in a specific folder with the name of try). I want to extract LPF (load proportionality factor for whole model) using python script (In my analysis I used static riks). I used the following commands but when I run my script I get an error :

I am doing research in Bio mechanics field. I need to
get some urgent ABAQUS/Explicit result from my generated knee model
from MRI information. I am very very new user of ABAQUS. I need your kind
help.  In light of this connection, I am attaching one file regarding
to my quarries . if you kindly guide me for some few steps, I
will continue then on and it would be highly appreciable.

 I tried to post anot one input file. But I cannot do that hereby. If any one wants me to help me out , I will send that via your personal email.

Arif

i am new to Abaqus and i am unsing Abaqus 6.10

i planned to solve a contact problem by taking a bearing for example problem. i modelled the bearing section in pro-e and inmported it to Abaqus.

*i gave the material properties of steel for both ball and races

* in interferance i defined ball as master and the surfaces in the reces in the bearing as slave. frictionless.

* i gave pressure on the top race and arresteed the bottom race.

* the sides were given symentric with respect to y axis.

when solved i get the job is aborted.

the error i get is

=>displacement increment is too large.

=>the increment value is too low

Hi

I am using Abaqus to model the profiled steel sheet and the dry board will be attached to it. i have two question:

1) i have drawn the profiled sketch and have to extrude it to the proper length. if i do so, then how can i add some points in between the sheet in order to put some springs.

2) if i extrude the created sketch to the certain length (ex. 200mm), can i then copy the created model and paste it there to reach the desirable length for the sheet.

thank you.