Failure mode transitions in RC beams: A cohesive/overlapping crack model application. (English) Zbl 1293.74401
From the summary: The analysis of reinforced concrete beams in flexure taking into account the nonlinear behaviour of concrete is addressed by a numerical approach based on the Cohesive-Overlapping Crack Model. An extensive experimental research was performed in order to obtain a rational explanation for failure transitional phenomena of RC beams by varying steel percentage and/or beam slenderness and/or beam size-scale. In the present paper, collapse mechanisms due to concrete tensile cracking, concrete compressive crushing and steel yielding and/or slippage are analysed and a numerical vs. experimental comparison is presented in order to validate the proposed model.
MSC:
| 74R99 | Fracture and damage |
| 74K10 | Rods (beams, columns, shafts, arches, rings, etc.) |
| 74E30 | Composite and mixture properties |
| 74-05 | Experimental work for problems pertaining to mechanics of deformable solids |
Keywords:
reinforced concrete beams; ductile-to-brittle transitions; size-scale effects; structural instability; cohesive crackReferences:
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