Advanced mechanical modeling of new materials and structures for the solution of 2020 Horizon challenges

    Progetto: Research project

    Dettagli progetto

    Description

    Challenges for the contemporary society call for significant technological improvements to be achieved in different fields,such as risk mitigation of Cultural Heritage, sustainable raw material supply and safeguard of social security, in accordancewith the topics of the Horizon 2020 Framework Programme. Among the cited challenges, we plan to solve the followingtarget problems:• Structural analysis of Heritage building and Reliability of masonry structures• Next generation materials and methodologies for vibration abatement and enhanced design• Structural nonlinear analysis of Concrete and Composite buildingsIt is believed that the key to successfully approach such a broad range of problems is the study of the mechanical behaviorof innovative materials, relying on effective constitutive and structural modeling and advanced numerical methods. Suchinvestigations require a final validation step, implemented through the analysis of specific real-life case studies, belonging todifferent engineering areas in which innovation is needed.The study of the mentioned problems will be performed by using a multidisciplinary approach, involving interactions ofseveral internationally recognized research units, which have already proved their capability of mutual collaboration (havingwon many PRIN and European Grants). The Research will focus on the following four different levels:1. CONSTITUTIVE MODELS to capture material responses of importance for the applications of interest. In particular,attention will be devoted to classes of materials and effects, ranging from concrete, masonry, FRCM composites tocarbon-nanotubes.2. STRUCTURAL MODELS to capture the response of macro- and micro-structures of interest.3. NUMERICAL METHODS to perform simulations of real-life cases related to the project applications. In particular, attentionwill be devoted to integration schemes for the proposed constitutive equations as well as to techniques for the solution ofinitial/boundary-value problems, e.g., advanced approaches for nonlinear structural statics and dynamics, meshless methodsfor multiphysics interaction, homogenization and multiscale methods for micro/macro interaction.4. REAL-LIFE CASE STUDIES to validate both the proposed constitutive models and numerical methods as tools to exploreinnovative solutions within the project target problems. In particular, the project will propose innovative solutions for thefollowing real-life applications:• Structural analysis of real masonry buildings (in Perugia, Venice, Palermo, Emilia Romagna, Rome);• Design of sustainable retrofit techniques for civil structures based on high-performance concrete and composite materials;• Development of advanced monitoring tools for structures and infrastructures.For the topics under investigation we plan to adopt a virtual testing approach. Accordingly, the numerical models arecalibrated using experimental data produced within the project.

    Layman's description

    The sets of objectives (O), methodologies (M) and results (R) are arranged according to the work packages (WPs) andrelated sub-packages, which have been envisaged for the project development.In particular, WP4 Real-life case studies. (Leader: DI PAOLA UNIPA)WP4.1 Masonry buildings. O4.1.1: Dynamic and seismic analysis of masonry buildings. M4.1.1:Identification and structural analysis of case studies, including nonlinear static analysis, non-standard limit analysis,spectrum and signal analysis, modal analysis. R4.1.1: Benchmark analysis on real scale historical buildings.WP4.2 Composite structures. O4.2.1: Durability analysis of concretes subjected to freezing and salt transport. M4.2.1:Definition of the theoretical model; standard FE formulation for the numerical model. R4.2.1: Model validation andapplication to real cases.WP4.3 Nanomaterials. O4.3.1: Analysis of CNT nanocomposites and innovative nanodevices. M4.3.1: SEM analyses andnonlocal modeling; designing nanodevices based on small-scale effects. R4.3.1: Design tools for innovative nanodevices.WP4.4 Laboratory and in situ testing. O4.4.1: Experimental tests on cement and innovative composite materials. M4.4.1:Shear bond tests performed on steel FRCM tapes bonded to concrete and masonry; characterization of recycled aggregatesusing experimental tests; experimental investigation of mortars reinforced by basalt fibers; digital image correlation andoptical fibers; experimental tests on hybrid reinforced concrete beams; laboratory tests for mechanical and durabilitycharacterization of composites with natural/recycled fibers; strengthening of masonry specimens with composites; laboratorytests for mechanical characterization of cement/lime mortars with self-healing materials; non-destructive tests on casestudies. R4.4.1: Calibration and validation of numerical and theoretical models.WP4.5 Monitoring. O4.5.1: Advanced tools for processing recorded data from monitoring using environmental noise. M4.5.1:Stochastic analysis, signal theory, low-cost sensors. R4.5.1: Remote control of structures through low-cost sensors.

    Key findings

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    StatoFinito
    Data di inizio/fine effettiva2/5/172/4/20