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software of interest to mechanicians

Mimics®14 enables design on anatomical data

Mimics 14 comes with a CAD-like functionality, enabling you to design directly on anatomical data. 

 

CONTACT version 10.2 released

Dear all,

Herewith I want to announc the release of CONTACT version 10.2.

The main changes with respect to earlier versions of the program are as follows:

Your Opinions About Open Source Software

All, I am conducting a survey and your response would be very much appreciated. The purpose of the survey is to gather data that will help the developers of open source software improve the success of their projects. All replies received before midnight Sunday 26th September will be entered into a draw for a £30 Amazon gift voucher. Here is a link to the survey: Click here to take survey Thanks for your participation! Lee Margetts

boolean operation

Hi

I want to model a plate that connected with stiffening beams in ANSYS.

 beams and plates has rigidly connected together, and there were no joints.

for model this, I first make an area and secondly extend this area to make a volume.

then I divide this volume to seperate plate and beams.

this is my question :

what relation exist berween components when they divide from one volume.

I mean suppose we have a volume, then we divide it in to two parts, what relation exist between this two new

volumes. 

ANSYS CODE FOR FATIGUE CRACK PROPAGATION

Hi all,

     Currently, I am using ANSYS 12.1 for the fatigue crack propagation simulation for the edge crack & center crack plates. It is a mixed mode crack propagation.

 

Can anybody please tell me or guide me how to write the code in the ANSYS using APDL for automatic remeshing around the cracktip when crack propagates to the new position?

 Thanks in advance. :) 

FEM Programming -Adaptive Remeshing Problem Because of Penetration(Figure was attached to illustrate the problem)

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Hello,everyone!

I'm programming by myself to do the simulation of forming process. I met the problem below. [img_assist|nid=8910|title=probelm|desc=penetration in adaptive remeshing|link=none|align=left|width=60|height=100]

I used second order triangular elements and h-refinement method in the simulation. When the workpiece(bottom) is remeshed, the new node is inside of the tool(upper). How can i solve the problem?

Any help will be appreciated!

Thanks!

Discrepancy of numerical results from analytical solution for an nonlinear viscoelasticity model

  I have written a Fortran code for nonlinear viscoelasticity according to the Hughes' recurrence algorithm based on a total Lagrangian formulation.  And a relaxation test is made. There is some deviation from the analytical solution(Theoretically the stress response should be an exponential decay plus a constant, isn't it?). The numerical ultimate stress is larger than the analytical one. As a larger initial strain is applied, the deviation is smaller. For a inital strain of 10%, there is almost no difference between the num. and analy. solution. What can account for this?

 

pin forces in ANSYS

hi all,

i am doing static analysis on a pick and carry crane, i need to find the pin forces. for this i created entity set with the nodes where the forces are to be derived and ran a static analysis in ansys.In order to derive the forces , i first picked the entity set and then applied the nodal loads from the list result options. the result that i got was not fine. it states there was zero forces on the pins, but its not.i need to find the pinforces, so kindly let me know , how to do it.

 

thanks

kamesh.G

LBB Modeling in ANSYS

Hi every one.

i realy need to know how can model and solve LBB condition for a simple example in ANSYS.please help me.

god bless you 

mof15922@yahoo.com 

question about abaqus

Hi guys

I want to simulate a problem with abaqus,but during runing of my project,percent of process not increas for axample when i change mesh sizes to biger runing go up to 50 % and when i change mesh sizes to smaller than the previos size,it occure again but in 25%

is there any one that know about this problem,i'm trying to solve it for 2weeks but i cann't.

I'm waiting for your suggestions...

masoudeng's picture

ansys rotor dynamics analysis

dear all

I need information about ansys rotor dynamics modeling and vibration analysis. please help me in this reserc. 

tanks everyone.

 

Crack modeling

Hi guys

I want learning about crack modeling in abaqus,

is there anyone to give me some example about crack modeling in abaqus?I think working on example is too faster to learn about modeling this type of events.

I'm waiting for your help

arun689's picture

dynamic loading

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hiii

i m, arun sahu student of IIT kharagpur.my mtech thesis is effect of dynamic loading on slope stability analysis in open cast mines.i hav startted my work using software ABAQUS.can i give velocity as input in abaqus?

and here i just want to give trapezoidal form of load up to 2 sec.so plz help me in these ...............

 

Hello everybody

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Hello

I do my thesis on bearing capacity of foundations near slopes, I use mohr coulomb plasticity with el asticity

but I cant understand what should I do and why my result is dependent on the mesh size and why when I refine elements near

foundation the bearing capacity of the foundation becomes smaller please help me how can I do this thesis

 

FRICTION STIR WELDING -SIMULATION-ABAQUS

Could you tell me how to define inflow and outflow eulerian boundary in ALE? MY ERROR IS "An Eulerian boundary region cannot overlap a sliding boundary region"

Defined in the first interface surface, and then modify the inp file, change to add
REGION TYPE = EULERIAN

*SURFACE, NAME=SURF1, REGION TYPE=SLIDING
TOP,S4

*SURFACE, NAME=EULER1, REGION TYPE=EULERIAN
EULER1,S3

Then, I go on the File/Import/Model...inp.file  - when he fined warning

bugatti87's picture

abaqus

how can i define frequency domain viscoelastic material & electrorheological in abaqus ?

Can I retrive strain increment in ABAQUS with python?

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Dear all,

I just finished extrusion process simulation in ABAQUS with the input of stress-strain data. Now I want to retrive the strain increment of certain element during each deformation increment. Surely one can write straininc to a *.txt file when simulating with VUMAT. But the simulation of extrusion will be extremely slow with VUMAT. So How can I get the strain increment when simulating with the input of stress-strain data? 

Best regards,

mkury0121's picture

Abaqus Pin-on-disc Simulation problem

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ANSYS VISCOELASTIC MODELING

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Hi,

 I am trying to model a sheet of Poly Vinyl Butryl (PVB), which is a viscoelastic material in ANSYS. I have all the regular properties like elastic, shear and bulk modulus, poisson ratio, denstiy and damping factor. I also have a stress- strain curve of PVB. With all this data, is it possible for me to find the various constants in the viscoelastic models using ANSYS?

 Thanks

Saurabh 

Acoustic analysis in Abaqus

Dear all.

I hope you are well,

I want to know how i can analyze the acoustic and noise problems with Abaqus? can anyone recommend me some valuable tutorials or documents to start? or is there any superior software in order to work on these subjects?

Regards

hossein_r's picture

install franc3d

 

Hi all

 I want to install franc 3d , i read the installation guide in  the site:

 

You can examine the documentation at http://www.cfg.cornell.edu/software/software_documentation.htm . Below, I will try to explain how to install, start and use the program in a very basic way.

 

solved

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solved thanks

Best regards

Foundation on soil - ABAQUS

Hi there,

 Recently I have modelled a 2D block of soil, at the first step of analysis the soil block subjected to a gravitational load (Gravity) and gravitational stresses generated in the soil block, at the second step, a little rectangular part of soil block removed and currently a concrete block with same size of removed soil embedded on the soil block. this concrete block to be subjected a surface loading.

Abaqus error: code 5

Hi all,
I am trying to run a VUMAT subroutine for isotropic hardeining, whenever I input the command "abaqus j=inp_name user=subroutine_name " the analysis begins, the ODB file is generated but in few secs the analysis exits with an error, and the error is..

Abaqus Error: The executable C:\ABAQUS\6.7-1\exec\explicit.exe
aborted with system error code 5.

It also says...

pngwriter

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How can one install pngwriter with MinGW and Code::Blocks?

Also can anyone suggest some easy visualization library/tools for C++ that can be useful for simulation.

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