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spring displacement with gap

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I have to design two solid blocks (3d) with a spring and gap in between, but the k constant change when the distance (between the spring points) gets a specified value. Ive use pprobe, to create a delta variable gap , I ´ve use piecewise function to define k but the spring function in the model doesnt accept the k function, also I dont know if Im using pprobe correctly. I have to use two points, but the variable is the distance, I dont know how to set this newvariable, any clue or I m in the wrong diretion?

0 Replies Last Post 1 lug 2015, 08:56 GMT-4
COMSOL Moderator

Hello Maria Rey

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