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-Equazioni indefinite <strong>di</strong> equ<strong>il</strong>ibrio per le travi.-Esercizi vari sulle equazioni indefinite <strong>di</strong>equ<strong>il</strong>ibrio per le travi.24-Telai a maglia chiusa. Risoluzione <strong>di</strong> alcuniportali semplici isostatici a maglia chiusa.Diagrammi delle caratteristiche <strong>di</strong>sollecitazione.-Esercizi vari relativi a portali sempliciisostatici a maglia chiusa con determinazionee <strong>di</strong>agrammi delle caratteristiche <strong>di</strong>sollecitazione.25-Travi Gerber. Risoluzione analitica e grafica <strong>di</strong>alcune travi Gerber.-Travature reticolari piane. Principali tipi <strong>di</strong>travature reticolari. Analisi cinematica delletravature reticolari.26-Metodo dell’equ<strong>il</strong>ibrio dei no<strong>di</strong> per larisoluzione delle travature reticolari piane.Applicazione del metodo dell’equ<strong>il</strong>ibrio deino<strong>di</strong> ad alcune travature reticolari piane.-Metodo della sezione <strong>di</strong> Ritter per larisoluzione delle travature reticolari piane.Applicazione del metodo della sezione <strong>di</strong>Ritter per la risoluzione <strong>di</strong> alcune travaturereticolari piane.27-Sistemi materiali <strong>di</strong>screti. <strong>Bari</strong>centro <strong>di</strong> unsistema materiale <strong>di</strong>screto. Proprietà delbaricentro. Momento statico. Teorema <strong>di</strong>Varignon. Cambiamento <strong>di</strong> coor<strong>di</strong>nate.-Sistemi materiali continui. Determinazioneanalitica e grafica <strong>di</strong> baricentri <strong>di</strong> figure piane.28-Momento <strong>di</strong> inerzia e momento centrifugo <strong>di</strong>sistemi materiali <strong>di</strong>screti e <strong>di</strong> sistemi materialicontinui. Teorema <strong>di</strong> Huyghens e teorema <strong>di</strong>Steiner.-Assi principali <strong>di</strong> inerzia e momenti principali<strong>di</strong> inerzia. Determinazione dei momentiprincipali <strong>di</strong> inerzia <strong>di</strong> alcune figure piane.29-Centro relativo ad un’asse. Assi coniugati.Teorema <strong>di</strong> reciprocità. Polarità <strong>di</strong> inerzia.Ellisse centrale <strong>di</strong> inerzia.-Determinazione per via analitica dell’ellissecentrale <strong>di</strong> inerzia <strong>di</strong> alcune “sezioni”geometriche significative ut<strong>il</strong>izzate per larealizzazione degli elementi strutturali (travi ep<strong>il</strong>astri).30-Nocciolo centrale <strong>di</strong> inerzia. Proprietà delnocciolo centrale <strong>di</strong> inerzia. Determinazionedel nocciolo centrale <strong>di</strong> inerzia <strong>di</strong> alcunesezioni significative.-Esercitazione in aula sulla geometria dellemasse consistente nella determinazione pervia analitica del baricentro, degli assiprincipali <strong>di</strong> inerzia, dei momenti principali <strong>di</strong>inerzia, dell’ellisse centrale <strong>di</strong> inerzia e delnocciolo centrale <strong>di</strong> inerzia <strong>di</strong> una figura pianacomposta.Lessons and teaching seminars of the 1stsemester1-Presentation of the course. Definition of“vector”. Vectorial sum and multiplicationby a real number.“Dot” product, “outer” or cross productamong vectors. Properties of vectorialoperations.2-Exercises on vector operations. Doublevectorial product.-Vector components in Cartesiancoor<strong>di</strong>nates. Vectorial operations inCartesian coor<strong>di</strong>nates.3-Parametric equation of a line parallel to avector, passing for an assigned point.Equation of a plane perpen<strong>di</strong>cular to avector and passing for an assigned point.Vector spaces.-Linear applications. Properties of linearapplications.4-Exercise on linear applications.-Rotations. Euler representation.5Exercises on “rotations”. Infinitesimalrotations. Determinants. Inverse andorthogonal applications.“Applied vectors “. Resultants of a systemof applied vectors. Transportationmoments. Equivalent systems of appliedvectors, balanced systems of appliedvectors, balancing systems of appliedvectors. Couples of forces.6- Reduction of a Force and Couple Systemto a point. Scalar invariant. Central axis.Equivalent resultant. Systems having nullscalar invariant.- Funicular polygon and related exercises.Normal polygon.7Decomposition of a force along two parallelor non parallel lines. Decomposition of aforce along three lines not belonging to thesame penc<strong>il</strong>. Composition of a force and acouple.Decomposition of a couple along twoparallel or non parallel lines. Graphicdetermination of the moments of a systemof plane forces. Systems equ<strong>il</strong>ibratingparallel forces along parallel lines.8-Kinematics. Discrete material systems.Continuum material systems. Rigiddeformations and rigid <strong>di</strong>splacements.Rigid bo<strong>di</strong>es. Rotations and translations.-Rigid <strong>di</strong>splacements in a plane.Infinitesimal rigid <strong>di</strong>splacements.Infinitesimal rigid <strong>di</strong>splacements in a plane.Exercises on rigid <strong>di</strong>splacements an<strong>di</strong>nfinitesimal rigid <strong>di</strong>splacements.9- Constraint. Plane constraints: simple,double and triple constraints. Kinematicalproperties of plane constraints.10-Kinematical analysis of constrained planerigid bo<strong>di</strong>es. Kinematical matrix [C].Exercises.-Rotation centres of constrained plane rigidbo<strong>di</strong>es. Examples of analytical andgeometrical solution of constrained planerigid bo<strong>di</strong>es. Ineffective or insufficientconstraint con<strong>di</strong>tions.11-Statics of rigid bo<strong>di</strong>es. Contact forces andbody forces. Singular loads, <strong>di</strong>stributedloads. Definition of work for forces and forcouples. Static characterization of planesmooth constraints.- Con<strong>di</strong>tions for Rigid-Body Equ<strong>il</strong>ibrium.Equations of Equ<strong>il</strong>ibrium. Reactions.12-Static analysis of a constrained rigid body.Static matrix [S]. Exercises.-Virtual work principle. Exercises solvedwith <strong>di</strong>fferent solution methods: virtualwork principle, equ<strong>il</strong>ibrium equations,44.2.9 Progetti <strong>di</strong>dattici del I ciclo del CdLm in Architettura83

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