Topology optimization is employed to define the optimal layout of fiber-reinforced layers to be applied on concrete plates subjected to transverse loads in order to maximize their elastic stiffness, for a given amount of reinforcing material. The mechanical properties of the reinforcing material are assumed to depend on their local density, according to the so-called SIMP model. Both the density and the orientation of the reinforcing material are design variable fields. Compressive stresses along the fibers are avoided by a suitable penalization technique. The possibility of cracking in the concrete core is also indirectly taken into account. Some numerical examples illustrate the capability of the proposed approach in defining reinforcing layouts that spontaneously resist the failure mechanisms of the unreinforced plate predicted by limit analysis.
Fiber-reinforcement of concrete plates by topology optimization
BRUGGI, MATTEO;TALIERCIO, ALBERTO
2015-01-01
Abstract
Topology optimization is employed to define the optimal layout of fiber-reinforced layers to be applied on concrete plates subjected to transverse loads in order to maximize their elastic stiffness, for a given amount of reinforcing material. The mechanical properties of the reinforcing material are assumed to depend on their local density, according to the so-called SIMP model. Both the density and the orientation of the reinforcing material are design variable fields. Compressive stresses along the fibers are avoided by a suitable penalization technique. The possibility of cracking in the concrete core is also indirectly taken into account. Some numerical examples illustrate the capability of the proposed approach in defining reinforcing layouts that spontaneously resist the failure mechanisms of the unreinforced plate predicted by limit analysis.File | Dimensione | Formato | |
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