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Deflection Shapes Due to Intrinsic Stress in Thin Films

Published online by Cambridge University Press:  16 February 2011

Christine B. Masters
Affiliation:
The Pennsylvania State University, Engineering Science and Mechanics Department, University Park, PA 16802
N. J. Salamon
Affiliation:
The Pennsylvania State University, Engineering Science and Mechanics Department, University Park, PA 16802
D. E. Fahnline
Affiliation:
The Pennsylvania State University, Materials Research Laboratory, University Park, PA 16802
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Abstract

The curvatures of thin film/substrate systems are obtained for a nonlinear plate deflection model using a Galerkin minimization procedure proposed by Hyer. A fifth order polynomial involving the curvatures is given. The results show that the linear models of Stoney and Brenner and Senderoff apply only at low stress states and that stable and unstable configurations develop at higher stresses even for isotropic systems.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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