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Non-linear compression spring

Question asked by Toby Mullarkey on Oct 15, 2010
Latest reply on Oct 15, 2010 by Roland Schwarz

Is there a way to simulate a non-linear spring?


I know the nominal force vs deflection figures for the spring -  160N/15%, 300N/30%, 420N/45%, 520N/60%, 600N/75% and 680N/90%


Because the force drops as the deflection increases, I run the risk of bottoming out the real spring when the FEA on a linear spring is ok.


The spring used is a Belleville washer type but I'm modelling the FEA with a spring connection in place of the washer.