contact
Answers
-
but about 25 flag. i have been solving the task about tie plates 2 moths ago. ihave written in forum about my issue and to support too. support recommended to use 25. it helped=)
0 -
Whatever is on help is what I have right now about GTS
0 -
/emoticons/default_unsure.png' title=':unsure:'>
<?xml version="1.0" encoding="UTF-8"?>
0 -
Altair Forum User said:
<?xml version="1.0" encoding="UTF-8"?>
is it from reference_guide?
0 -
Altair Forum User said:
is it from reference_guide?
yes,
0 -
Altair Forum User said:
yes,
maybe you have new reference_guide. in my r_g i have only about 25/26/30 spotflag.
0 -
attached is documantation for type 2 interface (version is 2017.2.3)
0 -
thanks, @Ivan!
Where did you find it?
what do you think about these graphics?
imposed displacement.
<?xml version="1.0" encoding="UTF-8"?>
should be in tutorial said. where did energy dissipate? Do you have any idea?
0 -
it was exported from user guide which comes with above mentioned Hyperworks version.
You have correctly observed that some energy was dissipated and the energy balance in the .out file is negative. There are two possible causes:
-hourglass energy
-contact energy, especially with friction
Attached is documentation on energy balance; also check the same topic in Crash Analysis With RADIOSS- A Study Guide
Plot both energies to see if they account for the difference (they are not included in total energy).
0 -
thanks my second picture was from crash_book. there isn't enough information. added mass is a little. but Energy error is 13.5%, so i do not like it=(
i use i solid=17 and shell type=24. hourglass energy and contact energy are enough little.
0 -
I suspect contact energy. Can you plot the contact energy and check the graph along with other?
0 -
Hello, @Prakash Pagadala!
it's enough little.
i suspect mass scale. it's enough little, but part that can move is smaller than entire model.
i am checking this cause now.
if it's true i will write to you! if it isn't true i will write to you too)))
0 -
Altair Forum User said:
if it's true i will write to you! if it isn't true i will write to you too)))
0 -
i haven't used mass scale.
it's interesting.
i have imposed displacement (stend).
and gravity load.
<?xml version="1.0" encoding="UTF-8"?>
i didn'w 0 -
Maybe that is coming from imposing time step.
0 -
i sent to you model.
please, look it=)
0 -
OK, I will check and update you soon,
thanks
0 -
0
-
Hi Yeah,
I am running the same now. I will update you soon.
0 -
I tried several changes, but I still the same at my end.
I will check with experts on this and I will get back to you ASAP!!!
0 -
I just had a word with one of the RADIOSS experts. Physically there is no problem with the analysis and the spikes can be ignored.
Due to restart, such spikes/disturbances in the plot are expected.
0 -
Hi, @Prakash Pagadala!
i have been waiting the answer from support since wednesday!
if i have answer i will write about it here!
and could you explain about RESTART if i have spikes?
<?xml version="1.0" encoding="UTF-8"?>
0 -
Altair Forum User said:
and could you explain about RESTART if i have spikes?
For now you can ignore the spikes as long as the animation is fine. If you see any strange behavior, then there is something wrong.
I am waiting for more information from experts. I will share as soon as I have it.
0 -
ok.
0
Altair Employee
