Menu

Discussion Forum

New Discussion
查找

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Impulse Response of a simple structure

Posted 2013年6月11日 GMT-4 04:48 Structural Mechanics Version 4.3a 4 Replies

Jasha Poliakine
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi everyone,

I would like to simulate a simple structure under the action of an impulsive force.
The structure is a free-clamped cantilever, where the impulse force is applied at the free end.

The stationary study gives no problem at all, so I define magnitude and direction of the static load and I obtain the displacement (or other mechanical parameters) of the structure.

However I have no idea of how to define an impulsive load.
I set a Time dependent study, but the load keeps being static.

I'm using comsol 4.3.

Thanks in advance to whoever is going to help :)
(I'm quite sure it's pretty easy to do, even though I couldn't find any tutorial on this matter).
4 Replies Last Post 2013年9月26日 GMT-4 15:35
Sven Friedel COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2013年6月12日 GMT-4 05:17
Hi Jasha,

have a look at the tutorial "bracket transient" in the Model Library for the Structural Mechanics Module.

Best regards,

Sven Friedel
Hi Jasha, have a look at the tutorial "bracket transient" in the Model Library for the Structural Mechanics Module. Best regards, Sven Friedel
Jasha Poliakine
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2013年6月15日 GMT-4 05:38
Hi Sven, and thank you for answering.

I finally managed to define an impulsive load, and I can get the time-dependent simulation to run.

However, I have another problem since comsol seems not to integrate structural friction. Any ideas on how I can introduce such mechanism?

Thank you again
Jasha
Hi Sven, and thank you for answering. I finally managed to define an impulsive load, and I can get the time-dependent simulation to run. However, I have another problem since comsol seems not to integrate structural friction. Any ideas on how I can introduce such mechanism? Thank you again Jasha
Ruban Sugumar
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2013年9月26日 GMT-4 15:35
You can include it as structural loss factor under damping in linear elastic material.

--
RUBAN SUGUMAR
You can include it as structural loss factor under damping in linear elastic material. -- RUBAN SUGUMAR
Ruban Sugumar
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2013年9月26日 GMT-4 15:35
Physics(Solid Mechanics)>Linear Elastic Materisl>Damping(add it) and modify the settings

--
RUBAN SUGUMAR
Physics(Solid Mechanics)>Linear Elastic Materisl>Damping(add it) and modify the settings -- RUBAN SUGUMAR

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content