کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
774945 | 1463220 | 2011 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Contribution of heterogeneous strain field measurements and boundary conditions modelling in inverse identification of material parameters Contribution of heterogeneous strain field measurements and boundary conditions modelling in inverse identification of material parameters](/preview/png/774945.png)
The present paper aims at applying the Finite Element Updating inverse method to several sample geometries by the means of Digital Image Correlation. The full-field data are experimentally obtained from three geometries exhibiting increasing strain fields heterogeneities. For each test, a Finite Element model is built and boundary conditions are duplicated from the measured displacements at the sample borders. Field comparisons are performed at several time steps until fracture occurs and a Levenberg–Marquardt method is used to solve the optimization problem. Six parameters of an anisotropic elastic–plastic constitutive model are identified and validated through the simulation of a deep-drawing forming operation. Results show that identification quality is improved when heterogeneous strain fields are used.
Journal: European Journal of Mechanics - A/Solids - Volume 30, Issue 3, May–June 2011, Pages 373–382