Nylon Spring Force vs Temperature

[sninja]

Hi guys,

I'm working on designing a Nylon 66 part which grabs onto another part using a plastic snap finger. Nylon's flexural modulus decreases by about 4x when going from -40C to +40C. Source:

http://www.toray.jp/plastics/en/amilan/technical/tec_001.html

Is it therefore correct to say that if the snap finger was applying 4 pounds of force to the mating part at -40C, that force would decrease to 1 pound at +40C?

See the a simplified illustration attached for clarity.

Thanks!

 

[Tmoose]

Probably why details like this are so common.

http://store.440source.com/images/1011051.jpg

http://www.rubberoilseals.com/photo...seal_for_peujeot_bmw_mercedes_benz_engine.jpg

http://supersprings.biz/wp-content/uploads/2012/04/gs1.jpg