Ask for help about sound pressure induced force/moment

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Michael Liu - 30 Jan 2004 20:40 GMT

Could anyone give me some information about how to calculate the
force/moment induced by an incident sound pressure?

I guess the principle of virtual work should be utilized to approach
this problem, but it is hard to find references on this topic.

If you can advise any reference materials or give me some idea, it
will be highly appreicated!

Thanks a lot!

Reply to this Message

dvt - 30 Jan 2004 21:59 GMT

> Could anyone give me some information about how to calculate the
> force/moment induced by an incident sound pressure?

We must be on different wavelengths, since the only answer I can conjure
is pretty simple. Force is the integral of pressure over the area normal
to the direction of interest.

Dave
dvt at psu dot edu

Reply to this Message

Hal Zintel - 31 Jan 2004 02:07 GMT

> > Could anyone give me some information about how to calculate the
> > force/moment induced by an incident sound pressure?
>
> We must be on different wavelengths, since the only answer I can conjure
> is pretty simple. Force is the integral of pressure over the area normal
> to the direction of interest.

Sounds good to me. I assume the "incident sound pressure" is striking a
surface of some sort. If so, both the pressure of the reflected and incident
waves will contribute to the total force. If the surface is perfectly
rigid, the total pressure will be twice the free field pressure.

Hal

Reply to this Message

Natural Science Forum / Physics / Acoustics / January 2004

Ask for help about sound pressure induced force/moment