20.500.12556/RUL-165209 Computationally efficient stress reconstruction from full-field strain measurements Stress reconstruction based on experimentally acquired full-field strain measurements is computationally expensive when using conventional implicit stress integration algorithms. The computational burden associated with repetitive stress reconstruction is particularly relevant when inversely characterizing plastic material behaviour via inverse methods, like the nonlinear Virtual Fields Method (VFM). Spatial and temporal down-sampling of the available full-field strain data is often used to mitigate the computational effort. However, for metals subjected to non-linear strain paths, temporal down-sampling of the strain fields leads to erroneous stress states biasing the identification accuracy of the inverse method. Hence, a significant speedup factor of the stress integration algorithm is required to fully exploit the experimental data acquired by Digital Image Correlation (DIC). To this end, we propose an explicit stress integration algorithm that is independent on the number of images (i.e. strain fields) taken into account in the stress reconstruction. Theoretically, the proposed method eliminates the need for spatial and temporal down-sampling of the experimental full-field data used in the nonlinear VFM. Finally, the proposed algorithm is also beneficial in the emerging field of real-time DIC applications. stress reconstruction plasticity material testing 2.0 digital image correlation virtual fields method rekonstrukcija napetosntega stanja plastičnost materialno testiranje 2.0 korelacija digitalnig slik metoda virtualnih polj true false true Angleški jezik Slovenski jezik Članek v reviji 2024-11-27 08:10:24 2024-11-27 08:10:27 2025-03-20 09:40:14 0000-00-00 00:00:00 2024 0 0 Str. 849–872 Vol. 74 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531 1432-0924 10.1007/s00466-024-02458-4 190346755 Halilovic,_Starman,_Coppieters_-_Computationally_efficient_stress_reconstruction_from_full-field_strain.pdf Halilovic,_Starman,_Coppieters_-_Computationally_efficient_stress_reconstruction_from_full-field_strain.pdf 1 F2E7E03F3BB86D289A2B831509BD4DFC 0cbcaea36cc5403b307765fe4786a159119ae45b2b413c4be057171314dafd12 9f667100-ac8e-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=196242 https://link.springer.com/article/10.1007/s00466-024-02458-4 1 4502e873-ac8e-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=196241 Fakulteta za strojništvo 0 0 0