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oai:recercat.cat:2117/105622025-07-17T06:42:39Zcom_2072_1033col_2072_452950

A new damage model for structures subjected to cyclic loads Barbat Barbat, Horia Alejandro Oller Martínez, Sergio Horacio Paredes, Jairo Andrés Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures Structural stability Structural failures Resistència estructural The structures subjected to dynamic loads often show alternative tensioncompression states stress; in such a case, even if certain damage (fracture) is reached during the tension cycle, the structure should maintain its capacity to withstand subsequent compression based only on the contact effect in the damaged area. In order to control this behavior requires a phenomenological constitutive model able to consider the contact as a structural limitation. On the other hand, from the constitutive point of view geomaterials have different damage thresholds for tension and compression and, from the structural point of view it must be ensured that the material damaged in tension still can resist compression. In this case, it is accepted that cracks behave as a contact surface at the structural level. To meet the above mentioned phenomenology, a modification of the damage model differentiated in tension and compression of Faria et al. (1998) is performed in this paper, considering independent strength thresholds in each of these processes, controlled with a single discontinuity threshold function. Postprint (published version) 2010 Conference report Barbat, H.; Oller, S.; Paredes, J. A new damage model for structures subjected to cyclic loads. A: World Congress on Computational Mechanics and Asian Pacific Congress on Computational Mechanics. "9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics". Sidney: 2010, p. 1-11. https://hdl.handle.net/2117/10562 eng Restricted access - publisher's policy 11 p. application/pdf