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Analysis of nonlinearly elastic cantilever snap beams for assembly of plastic parts
Author(s) -
Gupta Mahesh
Publication year - 1997
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11840
Subject(s) - cantilever , materials science , nonlinear system , deflection (physics) , constitutive equation , structural engineering , stress–strain curve , mechanics , composite material , classical mechanics , finite element method , physics , engineering , deformation (meteorology) , quantum mechanics
Accounting for the nonlinear stress‐strain behavior of plastics is important for good design of a snap joint. A constitutive equation for approximating the nonlinear stress‐strain behavior of plastics is introduced in this paper. The equations for the stress, strain, and deflection of a cantilever beam, based upon the newly introduced constitutive equation are presented. In comparison with the experimental results, the cantilever deflection predicted from the nonlinear analysis is found to be about 50% more accurate than the corresponding predictions from the linear analysis.