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The Strain Corrections for Accuracy Improvement to Predict Large Deformation of Wings
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 Title & Authors
The Strain Corrections for Accuracy Improvement to Predict Large Deformation of Wings
Lee, Hansol; Kim, In-Gul; Park, Sunghyun; Kim, Min-Sung;
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The information about the deformations of high-aspect-ratio wings is needed for the real-time monitoring of structural responses. Wing deformation in flight can be predicted by using relationship between the curvatures and the strains on the wing skin. It is also necessary to consider geometric nonlinearity when the large deformation of wing is occurred. The strain distribution on fixed-end is complex in the chordwise direction because of the geometric shape of fixed-wings on fuselages. Hence, the wing displacement can be diversely predicted by the location of the strain sensing lines in the chordwise direction. We conducted a study about prediction method of displacements regardless of the chordwise strain sensing locations. To correct spanwise strains, the ratio of spanwise strain to chordwise strain, Poisson`s ratio, and the ratio of the plate strain to the beam strain were used. The predicted displacements using the strain correction were consistent with those calculated by the FEA and verified through the bending testing.
Strain Correction;Large Deformation;Strain;Nonlinear Displacement Prediction;
 Cited by
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