Tag Archives: FEA analysis

Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.
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Two Discussions on Cantilevered Snap Fit and Calculating Max Shear Stress

By Jeff Wickham, P.E.
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Jeff Wickham, P.E. is the Principal at LifeHope Medical, Inc.

Q: I designed a cantilevered snap fit that extended as a continuation of a wall, but some of the prototypes cracked at the snap finger barb. Usually, the highest stresses are at the base of the cantilever. So why did the snap finger crack where it did? A: The snap finger would likely have cracked at its base if it were extending from a flat surface rather than as a continuation of a wall.  In this case, because it was extending from a wall there was no stress concentration at the base,…

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