ls-dyna

Hi,

I am trying to use iso-geometric elements in LS-Dyna with the keyword *ELEMENT_NURBS_SHELL_PATCH. The job manager terminates without mentioning where the errors are.

Can someone help me with this? A sample .k file using the above keyword will be helpful.

Thank you!

Regards,

Harsha Reddy

Hello,

Can anyone help me with some examples of XFEM implementation in LS-DYNA? Also, is XFEM in LS-DYNA currently applicable with shell elements only?

Thank you,

Prathyush

This training course covers the ANSYS LS-DYNA Interface, which seamlessly links the ANSYTS traditional environment pre- and post-processing software with the LS-DYNA explicit solver to conduct highly nonlinear, transient dynamic analyses. Sequential solutions are also discussed, in which the ANSYS implicit solver is used in conjunction with the LS-DYNA explicit solver to extend the range of applications.

http://www68.zippyshare.com/v/72688173/file.html

September 2013

Position Description: 
     Sr. Staff Mechanical Engineer

Targeted Salary Range:   BSME $62k to $78k | MSME or Ph.D. $72k to
$90k

We are looking for a talented mechanical engineer with exceptional
communication skills with a background in FEA.

Hi there,

I'm using LS-DYNA as a tool in my study. Currently, i'm facing this problem:

Run-time check failure#3 - the variable 'count_ntime' is being used without being initialized

Please...help me...I've done so many new models, yet the same error keep occurring...

Thanks... 

p/s: i can be reached by this e-mail: man@ppinang.uitm.edu.my 

Hello, everyone!

I am a graduate student in Hunan Univ, my research field is meshless method. Instead of using codes to calculate, I find EFG has been well developed in ls-dyna, and using software may be more convienient for me.  

But I can only find some introductional information, so I want to find some useful material in iMechnica.com!

THX! 

Hello everyone,

I am curretly working on predicting the failure in thin loaded plates. The plates are impacted by a hemispherical rigid cylinders at a low speed (4.53 m/s <--> Free fall from 1.05 meter) and are perforated experimentally at their center.

I tried to simulate failure with ls-dyna on a shell based model ( the sheet is very thin : 1 mm thickness Vs  130 x 130 mm ), but it seems that the failure strain measured on the tensile tests is underestimated ( the curves after the begining if necking are false).

Dear all,

I would like to run a tensile test under ls-dyna of a mild steel  and
apply a 7000 N load to the dog bone specimen on a explicite scheme.

Unfortunately, I
have wild deformations ( and an error) on the nodes on edges where the
load is applied, so can you please tell me what are the importants
constants (like time termination, mass scale,...) and how to perform a
perfect run?

Have a good day,

Thank you

M.

Hi,

I am solving an implicit non-linear problem in LS-DYNA. I was not able to achieve convergence. I changed the default displacement andenergy norm (which are 0.001 and 0.01 respectively) to 0.009 and 0.05respectively, the solution converged. My question is, is it advisable to changethe default norms to achieve convergence?