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Plastics Design
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This calculator calculates the Dynamic Strain of a
cantilevered flexing finger typically used in plastic snap fit type designs.
This calculator will calculate the unknown for the given conditions. Four (4) inputs
are required, See the application illustration at bottom of page. The following are definitions for the elements:
E = Deflection Strain Y = Maximum deflection
ho
= Thickness at base of finger L = Length of
finger K = Proportioned Constant for
Tapered Beam (see charts below) Check
calculated strain against material mechanical specifications.
K = hL / ho
CHART
Proportioned Constant K
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