iMechanica - about Ansys Ls-Dyna - Comments

ANSYS/LSDYNA

Hessam Ghasemnejad — Fri, 25 Jan 2008 13:26:41 -0500

Hello Friend,

I am using ansys/lsdyna for quasi/static modelling. But I have not got satisfactory results. Could you please give me some comments about quasi-static modelling?

many thanks

in Ansys Ls-dyna thr is

lakku12 — Fri, 07 Dec 2007 05:45:40 -0500

in Ansys Ls-dyna thr is option to write ".k" file time in solution window.

Just try that. to get the .K file and try to run it in the LsDyna Solver.

The main problem is the postpor tht r using is of diffrent flatform.

Just chech it.

A Comprehensive Pre and Post Processor for LS-DYNA

Tracy J. Flemings — Thu, 06 Dec 2007 11:21:21 -0500

If you are creating LS-DYNA models and having trouble defining advanced features, you may find that it is easier to use a pre-processor that supports the entire LS-DYNA keyword set. eta software sells a preprocessor called eta/VPG is that fits this description. Nearly all of the LS-DYNA Keywords are supported within the preprocessor, so that you don't have to edit the input deck by hand.

VPG is easy to learn to use and affordably priced for academic institutions.

VPG also has a complete post-processor and several special purpose modules. You can get more information about eta/VPG at www.eta.com or by contacting me.

TJ Flemings

ANSYS LS DYNA s

george salib — Thu, 06 Dec 2007 02:45:34 -0500

Hello Mr. Laku,

I have a question about LS DYNA, as Im yusing an implicit to explicit anaylsis. I have done the implicit anaylsis in ANSYS, as i switch to explicit and perform all the changes in the ANSYS/LS DYNA GUI all is working perfectly. I want ot add a command that isnt present in the ANSYS , so i ask to generate the .k file through the GUI command EDWRITE. The problem starts that when i run the code for the ANSYS/LS DYNA and LSDYNA solver each one alone i get two different results, even i didnt perform any changes yet. Actaully the ANSYS/LS DYNA results is the right one while the LS DYNA solver one is wrong, I also get in teh resutls missing element in the graphics and load isnt working properly. I still need to run through the solver of the LS DYNA after I add the additional LS DYNA command. What could be the problem, I have no clue. Could you help me please.

Thanks

George Salib

in ansys you are not

lakku12 — Tue, 04 Dec 2007 22:56:50 -0500

in ansys you are not getting the explicit method. its only the steady state method.

Thr is no need of specifing the time with respect to load, you have o use the contact element in Ansys. If your using he Ansys Ls-Dyna you can study the explicit behavior of the material under a time with a load.

My intention

irfan ucun — Fri, 30 Nov 2007 03:04:08 -0500

Mr Lakku 12, Hi

My intention is constiute oortogonal cutting model in Ansys and determine cutting force and cutting temperature on cutting tool.

How I can cutting model in ansys?

which parameter I use?

thanks for all

Please go through some

lakku12 — Fri, 30 Nov 2007 01:40:48 -0500

Please go through some journals or some reseaach papers.

What is ur intention???. if u want to study the behavior of Workpiece, make tool as rigid and viceversa. if its composite material then its more havey to assign the material property and meshing.

In ansys there is help file

lakku12 — Fri, 30 Nov 2007 00:29:48 -0500

In ansys there is help file with examples.

please go through all help.

if ur facing any problem mail me.

Thnak u

Hi

irfan ucun — Sun, 25 Nov 2007 16:18:53 -0500

Hi MR. Lakku12

Could you help me for constituting ortogonal cutting model in Ansys Ls-Dyna?

thanks. I want to your message

asking for help

Chandana M Bandara — Sun, 25 Nov 2007 04:40:11 -0500

Dear frind,

I m a new user to FEM and trying to solve engineering proplams in my working place by ansys.I would be greatly thankfull if i am sent some ansys examples u done.

thank u verymuch

about Ansys Ls-Dyna

lakku12 — Fri, 02 Nov 2007 09:02:50 -0400

Hello all,

I am MTech Final Year student. Doing project in Ansys Ls Dyna. The project is on machining of the Al SiC composite material.

I am facing problem in selecting the element type and the assigning the material properties, because it is a MMC. This analysis is modeling contain the 2D model of orthogonal cutting.

I used the 2D plane 162 material, and givem the material properties as min and its not showing anything but giveing the error.

that Contact is not taken... i used the commond EDCGEN. but it still showing the same error.