Belts, as with chains have a spring rate. Whether you need a damper
depends on the system, not just the belt. A damper could make things worse if
not needed.
Ken Bauman
Ken,
I am sure that Paul would mention this if no one else did.  Tooth belts
DO NOT ABSORB SHOCK LOADS! There is miniscule if any stretch. You can
figure this yourself if you think about how these belts are used.
Frequently they are used as TIMING BELTS. If these belts stretched at
all they wouldn't be suitable for that use. The rounded tooth, (HTD
profile) which is used for all the high power applications, has a
arimid fiber strength section. This simply won't stretch, it's srtonger
than steel of similar weight. If you use a toothed belt drive you must
plan on other damping. My rule of thumb is if you would use a damper on
a chain drive (steel chain) you will need a similar damper on a belt
drive.
Bill Jepson


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