truck cabin project i'm working on

**knight23** · February 29th, 2008 12:00 AM

project namin sa school... Scania R500 cabin (day cab).

**wildthing** · February 29th, 2008 05:24 AM

sir anung ginawa ninyo dun sa cabin?... without description kasi, your picture post simply showed a cabin of a truck (nothing special about that)

**knight23** · March 1st, 2008 05:50 AM

working on the acoustics of the cabin... investigating the acoustic modes (modal analysis)

**dprox** · March 1st, 2008 07:11 AM

Originally Posted by knight23

working on the acoustics of the cabin... investigating the acoustic modes (modal analysis)

Uy, sayang knight23. Iimbitahin pa naman sana kita mag-EB.
Stay with this forum, and touch base with us when you're back home. OK?

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**knight23** · March 1st, 2008 05:13 PM

Originally Posted by dprox

Uy, sayang knight23. Iimbitahin pa naman sana kita mag-EB.
Stay with this forum, and touch base with us when you're back home. OK?

[SIZE="1"][ Ingat din sa sharing mo dito, kasi baka makompromiso ka sa amo mo diyan. Alam mo na ... ][/SIZE]

school/course project po, kaya walang problema. hehe

**wildthing** · March 1st, 2008 06:31 PM

para saan yung study? para ba malaman kung gaano kaingay sa loob ng cabin?!?

**drey** · March 1st, 2008 11:07 PM

oo nga... curious ako... :curious:

**safeorigin** · March 2nd, 2008 02:21 AM

/me is curious

**OyiL** · March 2nd, 2008 08:26 AM

hula ko:
hindi yan about external noise transmission into the cabin.

measure nila siguro how sound behaves inside the cabin. para sa entertainment system na i-dedesign nila.

**knight23** · March 2nd, 2008 08:40 AM

I'm doing experimental modal analysis, investigating the eigen-modes (patterns formed due to resonant frequencies) in the cabin and determine if there is a frequency or pattern that might be of interest.

Basically, measure the sound pressure at different points inside the cabin in a grid-like pattern. From the measured sound pressure a frequency response function/transfer function (frequency spectrum) is obtained. The FRF from the different points is processed through a modal analysis software where the eigen-frequencies, eigen-modes and modeshapes are obtained and also an animation can be made of the acoustical pressure inside the cabin. And for further work, make a FE-model and compare it with the experimental model.