can we model semi rigid joint in abaqus if yes can any one please give me a hint how to model the semi rigid joint..

 Hi, this is Ravindra

I am doing my M.Tech project in JNNCE college Shimoga, Karnataka.

 I am facing some problem with the ansys, my problem is to solve the 3D rotational problem in ansys, in this the constraining and the loads are the major problem im not able to solve this problem can you guide me.

Dear all, 

I have posted a meshfree class implemented in C++ in my web site. Although this is nothing new (which is why I am releasing it), it might be useful for some of you. Its capabilities include the computation of first order maximum entropy (maxent) basis functions and first order moving least squares (mls) basis functions along with their corresponding derivatives. It is a generic code in the sense that it can compute the aforementioned basis functions in one, two and three dimensions with just one single code. If you have comments or find a bug, please do let me know. It is available for Windows and Linux. The code along with its manual can be downloaded from here.

Someone has experience of moving mesh applied to the dynamic fracture under the plane stress, someone could help me understand the restart with COMSOL multiphisics, thanks for your attention

Hi,

I've a problem with the trasfer of a part from Solidworks to Abaqus and I hope that somebody can help me. Solidworks Abaqus Associative Interface gives me the possibility to trasfer part manteining features like partitions or mesh and it's a powerful tool; the problem is that I would to execute this passage in an automatic way because I must repeat this operation many times: so I need a script or a macro that enables this associative interface. I tried using the recording macro tools in Solidworks or looking the journal file of Solidworks but seems that the command that enable this interface hasn't an equivalent code in a macro.

Has anybody any ideas?

Thanks in advance,

Jam3s

I am looking into object oriented programing of the finite element method. I don't know whether somebody can provide a general-purpose oop design of a general finite element program, say a linear static analysis of a 3D solid. Or somebody who are experienced in this field point out some good references for this purpose. It will be better if the oop design is language free, i.e. not directly related with implementation in a specific language such as c++. Thanks in advance.

 Dear all:

During simulation in ABAQUS , I encountered a severe problem . I used ABAQUS Explicit but I could not define the interactions between for example 200 particles.I mean I used surface-to surface contact (explicit),so I had to define many many interactions between every particle with the others ,which is waste of time.It seems that I have to use  General contact(explicit) ,but by using general contact (explicit),an error occured which says :"CONTACT currently does not support the use of 2D surfaces".

I appreciate any ones help.

The default value of penalty stiffness scale factor in Ansys-Lsdyna  is 0.1, when one varies this value, he/she obtains different results, the question, how can one  know the right value of penalty stiffness scale factor?

I am simulating the impact of a 6mm - diameter steel solid ball with a rigid falt surface using Ansys-Lsdyna. the speed of the ball at the impact moment  is low (from 1 to 10 m/s). specificly, i am intersted in the period between  just touching and  just leaving the ground for the first impact.

hi

i am working with abaqus program

i run a analysis with propagtion crack and then i have fil file ( *.fil )

i konw that detailed information are in the fil file. but i could not be opening and view this fil file. i dont know that how to open fil file ( *.fil )

please help me

how the method for open and view fil file ( *.fil ) ???

please help

thanks

LSEL,S,LOC,Y,0 $LSEL,R,LOC,X,0.1

DL,ALL,,UY

 LSEL,S,LOC,Y,0 $LSEL,R,LOC,X,0.9 DL,ALL,,UY

 the first commands are always overrided by the second sets. I want to apply constraints to both lines, but why the first never works?

 Also, I have same problem with area constraints,

Thanks a lot if you could help me solve this problem!

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Thanks for all the replies!  Already solved.

Dear,

Dear All,

I am looking for a freeware molecular dynamics software working for Windows operative systems.

I have tried LAMMPS, but it seems to me that it works only under UNIX. 

Thank you very much in advance for any information.

Best wishes, Marco Paggi 

Does anyone know which software can plot implicit functions (such as ellipse in the form of x^2-x*y+y^2=1)as well as experimental data?

I'm new to this web,but I know this is a wonderful  forum for reserchers where you can discuss scientific problems with others.(some professors are  experts in their fields). I'm now studying anisotropic yield criteria,so I need  a graph software which can plot implicit funtions (such as  ellipse in the form of x^2-x*y+y^2=1) as well as experimental data.

I know Graph can plot implicit funtions,but the quality of  its graph is not good enough.Anyone knows other softwares please give me some advice,thanks in advance.

Is there anyone using LAMMPS for nano-mechanics? or for dislocation analysis?

I would like to discuss few things.

Hi!

I am wondering if anyone here knows of a generic heat engine simulator. I.e. something that can simulate the behavior of reciprocating engines, Stirling engines, and so forth.

The outputs I'm interested in include things like power and efficiency. The input variables that I would play around with include engine dimensions and material properties.

The approaches I've found tend to be CFD type simulations, but I'm not particularly concerned with fuel flow or combustion. In fact, for my purpose I could abstract the heat source as a simple heat flow. The heat transfer parts are what concerns me, mostly.

We are offering a free size-limited version of the ADINA finite element analysis software widely used for solving linear and nonlinear structural, heat transfer, CFD and multiphysics problems.

To request your free copy please visit:

http://www.adina.com/n900.shtml

hi``eveybody.

I am new to ABAQUS,have a model to simulation.

it has 3 plies that are combined with glue.

the core ist polymer and the upper,lower ply is the same steel.

the 3 plies have eigenvalue of thichness

should i build 3 parts,or only 1 part in the parts model?

when i cannot ignore the glue,thus what should i do?

should i use Create Composite layup in the Property model or create a solid Composite

 thanks.

Dear friends

I've prepared a dynamic model of saturated loose sandy soil with abaqus software. Unfortunately, after  running the model, the pore water pressure is didn't raise up. I don't know if any kind of subroutines I must use or anything else. I'm in the final step of  my thesis analysisand I really need your helps.

Sincerely yours

alishafi

Hi,

 I am new to ansys, does anyone know how can I create a surface to surface contact pair using batch mode. My contact elements are conta172 and targe169 (always bonded). Thank you.

New version introduces 3D LiveWire to easily segment very complex or low-quality scan data. 

Hi, I have difficulties in dealing with contacts in Adams/View: 

ERROR:    Only solids are supported in 3d contacts, some of the geometries used in contact are not valid solids.

I create the parts by writing a command file. Would anyone konw what causes this error? Thanks! 

I've been tasked with creating a 3D model of a demo inflatable
structure here in our lab. The goal is to inflate it in ABAQUS, and I
have been making some progress in using the *FLUID CAVITY keyword.
However I'm noticing odd things in my results. I have the pressure of
the gas increase to 4psi in a tabular form, however as I watch the
frame by frame, the stress concentrations on the structure vary oddly,
and the model deforms oddly. Almost as if it was a ball being pressed
back and forth against the floor, expand contract, that kind of deal.
I'm not really sure what is causing it.

I m lecturer in Engg. coll. n I've started to learn Abaqus 6.9. Anybody help me for tutorials for abaqus 6.9.

Rgds

Tarun Aseri