A localized hybrid method of stress analysis: A combination of moiré interferometry and FEM |
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Authors: | J Morton D Post B Han M Y Tsai |
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Institution: | (1) Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, 24060-0219 Blacksburg, VA |
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Abstract: | A method of combining moiré interferometry and the finite-element method to effect localized stress analysis is presented.
The displacement data from local regions of interest in the optical experiment are used as boundary conditions for the finite-element
stress analysis.
The stability of the method is examined with data from simple numerical models one of which corresponded to the stress analysis
of a pin-loaded plate with friction. These studies show that the method requires the sensivity of moiré interferometry for
successful implementation, i.e., displacement data accuracy within 0.1 μm or 4 μin.
This localized hybrid method of stress analysis provides a powerful and efficient method for the reduction of experimental
data. |
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Keywords: | |
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