We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Direct Pointwise Comparison of FE Predictions to Stereo DIC Measurements: Developments and Validation Using Double Edge-Notched Tensile Specimen.
- Authors
Myers, Troy; Sutton, MichaelA.; Schreier, Hubert; Tofts, Alistair; Kattil, Sreehari Rajan
- Abstract
To compare finite element analysis (FEA) predictions and stereovision digital image correlation (StereoDIC) strain measurements at the same spatial positions throughout a region of interest, a field comparison procedure is developed. The procedure includes (a) conversion of the finite element data into a triangular mesh, (b) selection of a common coordinate system, (c) determination of the rigid body transformation to place both measurements and FEA data in the same system and (d) interpolation of the FEA nodal information to the same spatial locations as the StereoDIC measurements using barycentric coordinates. For an aluminum Al-6061 double edge notched tensile specimen, FEA results are obtained using both the von Mises isotropic yield criterion and Hill's quadratic anisotropic yield criterion, with the unknown Hill model parameters determined using full-field specimen strain measurements for the nominally plane stress specimen.UsingHill's quadratic anisotropic yield criterion, the pointby- point comparison of experimentally based full-field strains and stresses to finite element predictions are shown to be in excellent agreement, confirming the effectiveness of the field comparison process.
- Subjects
DIGITAL image correlation; FINITE element method; RIGID bodies; FORECASTING
- Publication
CMES-Computer Modeling in Engineering & Sciences, 2024, Vol 140, Issue 2, p1263
- ISSN
1526-1492
- Publication type
Article
- DOI
10.32604/cmes.2024.048743