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Subject: Re: [ANSYS/LS DYNA] Missile penetration
Author: Paris Altidis
Date: 2008-05-02 15:35:03

Hi Ilker,
Yes, this is very possible to do. We opt for this route all the time.
One word of caution: Keep the Dyna documentation handy since not all
materials and element types are defined the same way. What I mean by
that is the presence of second and third control cards that need to be
inserted and used for specifying an element manually.
As others mentioned, the LS PrepPost program is powerful enough to help
you - as long as you become familiar w/ sometime cryptic
buttons/options.

Regards,

Paris Altidis
BELCAN Engineering Group
Adv. Engineering & Technology Division
630-786-0008
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-----Original Message-----
From: xansys-bounces_at_xansys.org [mailto:xansys-bounces_at_xansys.org] On
Behalf Of Ilker KAZAZ
Sent: Friday, May 02, 2008 2:35 AM
To: ANSYS User Discussion List
Subject: Re: [Xansys] [ANSYS/LS DYNA] Missile penetration

Thank you very much Dave, Joe, Chuck and Mou,



You have clarified me over the subject. I see that I can do something
with ANSYS/LS DYNA. I am familiar with ANSYS but I have never used LS
DYNA.



Let me ask one more thing. Depending on your comments about modifying
the k
file, if I did not misunderstand I can have full access to LS DYNA's
capabilities as far as I perform the necessary modification on the k
file.
However, while creating the model in ANSYS preprocessor, only limited
number
of element types and material models (concrete damage model -
Material#72 in
LS DYNA) is available to be used in the model. I wonder whether I can
change
the material model written to the k file, for instance to material model
#78
in LS DYNA, manually and run the analysis, since k file has nothing to
do
with ANSYS? Is it possible?



Let me put it in this way: I use SOLID164 from ANSYS library, but
material
model is #78 from LS DYNA library (by modifying the k file manually). In
the
k file SOLID164 is matched to a compatible element type in LS DYNA
(SECTION_SOLID - constant stress 8 node brick element). Can I still post

process the results or will the result file be incompatible to read by
the
post processor?



Thanks for all the response in advance.



Ilker



Ilker KAZAZ

Middle East Technical University

Department of Civil Engineering

06531 Ankara / TURKEY

Tel: +090 3122105478





----- Original Message -----
From: "chuck ritter"
To: "ANSYS User Discussion List"
Sent: Thursday, May 01, 2008 5:49 PM
Subject: Re: [Xansys] [ANSYS/LS DYNA] Missile penetration


> You can download the LS-DYNA manuals from the LSTC website, if you
haven't
> already. You can also download the pre and post processor LS-PRE/POST
for
> free, which will get you access to more features. It doesn't have
great
> documentation, but it sure is fast once you figure out what series of
> buttons to click on.
>
> You can still execute the modified K file with the ANSYS launcher or
> create
> a batch file to do it (.bat on Windows).
>
> Chuck Ritter
> JAR Associates
> ritter_at_jar.com
> 401-294-4589 fax 401-294-3826
>
> ----- Original Message -----
> From: "Metrisin, Joe"
> To: "ANSYS User Discussion List"
> Sent: Thursday, May 01, 2008 10:34 AM
> Subject: Re: [Xansys] [ANSYS/LS DYNA] Missile penetration
>
>
>>A word of caution here: As Dave mentioned, ANSYS/Ls-Dyna basically
adds
>> pre- and post- processing capability to the LS-Dyna solver. It only
>> supports the most basic meshing, material properties, and loading,
etc.
>> It doesn't support ALE, and sucks as a post processor.
>>
>> For the kind of problem you describe, don't expect to do all your
model
>> prep in ANSYS and hit the solve button. You'll have to do a lot of
>> manual editing of the .K file.
>>
>> Joseph T Metrisin
>> Florida Turbine Technologies, Inc.
>> 1701 Military Trail, Suite 110
>> Jupiter, FL. 33458-7887
>> (561) 427-6346
>>
>> -----Original Message-----
>> From: xansys-bounces_at_xansys.org [mailto:xansys-bounces_at_xansys.org] On
>> Behalf Of Dave Lindeman
>> Sent: Thursday, May 01, 2008 10:22 AM
>> To: ANSYS User Discussion List
>> Subject: Re: [Xansys] [ANSYS/LS DYNA] Missile penetration
>>
>> ANSYS/LS-DYNA is simply an interface between ANSYS and LS-DYNA. It
>> allows you to used ANSYS as a pre- and post-processor for LS-DYNA.
So,
>> if you feel LS-DYNA can solve your problem, then ANSYS/LS-DYNA should
>> work just fine.
>>
>> Regards,
>>
>> Dave
>>
>> -------------------------
>> Dave Lindeman
>> Lead Research Specialist
>> 3M Company
>> 3M Center 235-3F-08
>> St. Paul, MN 55144
>> 651-733-6383
>>
>>
>> Ilker KAZAZ wrote:
>>> Dear group members,
>>>
>>>
>>>
>>> I want to perform numerical simulation on the perforation of
>> reinforced concrete targets by high velocity missile. The missile
>> penetrates and passes through a target reinforced concrete slab,
indeed
>> three of them. ANSYS/LS DYNA is available in the university
currently. I
>> wonder whether ANSYS/LS DYNA can perform the simulation
satisfactorily.
>> The matter of importance in this simulation will be the damage
pattern,
>> i.e. the shape of crater in the entrance and exit regions on the
>> reinforced concrete target. Additionally can I simulate the fracture
and
>> fragmentation of concrete? The papers I have read convinced me that
>> these simulations can be done with codes like LS DYNA and AUTODYN.
What
>> about ANSYS/LS DYNA?
>>>
>>>
>>>
>>> Any informative comments will be highly appreciated.
>>>
>>>
>>>
>>> Ilker KAZAZ
>>>
>>> Middle East Technical University
>>>
>>> Department of Civil Engineering
>>>
>>> 06531 Ankara / TURKEY
>>>
>>> Tel: +090 3122105478
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>
>
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Posts possibly associated with message #93127AuthorDateScore
93105[ANSYS/LS DYNA] Missile penetrationIlker KAZAZ 2008/05/01 
93114Re: [ANSYS/LS DYNA] Missile penetrationDave Lindeman2008/05/01 
93115Re: [ANSYS/LS DYNA] Missile penetrationJoe Metrisin2008/05/01 
93116Re: [ANSYS/LS DYNA] Missile penetrationJoe Metrisin2008/05/01 
93117Re: [ANSYS/LS DYNA] Missile penetrationChuck Ritter2008/05/01 
93118Re: [ANSYS/LS DYNA] Missile penetrationChuck Ritter2008/05/01 
93120Re: [ANSYS/LS DYNA] Missile penetrationMou Jianqiang 2008/05/02 
93124Re: [ANSYS/LS DYNA] Missile penetrationIlker KAZAZ 2008/05/02 
93125Re: [ANSYS/LS DYNA] Missile penetrationMou Jianqiang 2008/05/02 
93126Re: [ANSYS/LS DYNA] Missile penetrationritter_at_jar.com2008/05/02 
93127Re: [ANSYS/LS DYNA] Missile penetrationParis Altidis2008/05/02