caa a22 4500 465741908 CHVBK 20180323111810.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF00018125 doi (NATIONALLICENCE)springer-10.1007/BF00018125 Elasto-plasto overall response in single and mixed mode crack configurations [Elektronische Daten] [A. La Barbera, M. Marchetti, S. Tizzi] This paper deals with stress-strain fields and strain energy density distribution in single and mixed mode crack configurations. To avoid stress singularity in the neighbourhood of the crack tip a proper physical-mathematical model has been devised, where plasticization effects are taken into account. Following the Dugdale model, a "continuous fictitious crack extension” is realized. In this way the original nonlinear boundary-value problem is reduced to a linear one that is of elastic-perfectly plastic type. The governing equations are derived within the mathematical framework of "free boundary problems”, and the solution is evaluated by a numerical procedure based on the incremental loading method and the Williams' stress function. Experimental investigations, by using the optical method of caustics have been carried out, evaluating the SED distributions and the fracture angles for several crack configurations. Kluwer Academic Publishers, 1990 La Barbera A. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut Marchetti M. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut Tizzi S. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut International Journal of Fracture Kluwer Academic Publishers 43/1(1990-05-01), 25-45 0376-9429 43:1<25 1990 43 10704 https://doi.org/10.1007/BF00018125 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00018125 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- La Barbera A. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut NATIONALLICENCE 700 1- Marchetti M. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut NATIONALLICENCE 700 1- Tizzi S. Aerospace Department, "La Sapienza”, University of Rome, Via Eudossiana 16, 00184, Rome, Italy aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 43/1(1990-05-01), 25-45 0376-9429 43:1<25 1990 43 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer