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Dive into the research topics where Cristian Bagni is active.

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Featured researches published by Cristian Bagni.


Fracture and Structural Integrity | 2015

Gradient-enriched linear-elastic tip stresses to perform the highcycle fatigue assessment of notched plain concrete

Cristian Bagni; Harm Askes; Luca Susmel

Gradient Elasticity (GE) allows the stress analysis to be performed by taking into account the size of the dominant source of microstructural heterogeneity via a suitable length scale parameter. This is done by simply assuming that the material under investigation obeys a linear-elastic constitutive law, albeit equipped with additional spatial strain gradients. From a practical point of view, the most important implication of this modus operandi is that gradient-enriched linear-elastic stresses at the notch tips are always finite, this holding true also in the presence of sharp stress risers (such as cracks). In the present investigation, the accuracy of two different GE based design strategies was checked against a number of experimental results generated by testing, under cyclic four-point bending, plain concrete samples containing different geometrical features. The high level of accuracy which was obtained by directly using gradient-enriched linear-elastic notch stresses strongly supports the idea that GE is a powerful tool suitable for designing notched concrete components against high-cycle fatigue. This result is very promising also because the required stress analysis can directly be performed by using standard Finite Element (FE) solvers.


Fatigue & Fracture of Engineering Materials & Structures | 2013

Structural integrity assessment of metallic components under multiaxial fatigue: the C–S criterion and its evolution

Andrea Carpinteri; Andrea Spagnoli; Sabrina Vantadori; Cristian Bagni


International Journal of Fatigue | 2016

Microstructural length scale parameters to model the high-cycle fatigue behaviour of notched plain concrete

O. Jadallah; Cristian Bagni; Harm Askes; Luca Susmel


Fatigue & Fracture of Engineering Materials & Structures | 2016

Gradient elasticity: a transformative stress analysis tool to design notched components against uniaxial/multiaxial high‐cycle fatigue

Cristian Bagni; Harm Askes; Luca Susmel


Computers & Structures | 2015

Unified finite element methodology for gradient elasticity

Cristian Bagni; Harm Askes


Acta Mechanica | 2017

Gradient-enriched finite element methodology for axisymmetric problems

Cristian Bagni; Harm Askes; Elias C. Aifantis


Journal of Sound and Vibration | 2015

A micro-inertia gradient visco-elastic motivation for proportional damping

Cristian Bagni; Inna M. Gitman; Harm Askes


Procedia Materials Science | 2014

Finite Element Technology for Gradient Elastic Fracture Mechanics

Cristian Bagni; Harm Askes; Luca Susmel


The Annual Postgraduate research Student Conference - 2016 | 2016

Gradient elasticity: a new tool for the multiaxial high-cycle fatigue assessment of notched components

Cristian Bagni; Harm Askes; Luca Susmel


Fatigue & Fracture of Engineering Materials & Structures | 2016

勾配弾性:単軸/多軸高サイクル疲労に対するノッチ付き部品を設計するための変換応力解析ツール【Powered by NICT】

Cristian Bagni; Harm Askes; Luca Susmel

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Harm Askes

University of Sheffield

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Luca Susmel

University of Sheffield

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Elias C. Aifantis

Aristotle University of Thessaloniki

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O. Jadallah

University of Sheffield

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