Unit MECHANICS OF SOLIDS AND STRCUTURES

Course
Civil and environmental engineering
Study-unit Code
70009212
Curriculum
In all curricula
Teacher
Vittorio Gusella
Teachers
  • Vittorio Gusella
  • Federico Cluni (Codocenza)
Hours
  • 80 ore - Vittorio Gusella
  • 16 ore (Codocenza) - Federico Cluni
CFU
12
Course Regulation
Coorte 2021
Offered
2022/23
Learning activities
Caratterizzante
Area
Ingegneria civile
Academic discipline
ICAR/08
Type of study-unit
Obbligatorio (Required)
Type of learning activities
Attività formativa monodisciplinare
Language of instruction
Italian
Contents
The beam model. Restraints. Kinematics and Static of the beam. Internal Forces. Theorem of virtual work. Constitutive Relations. Iperstatic structures. Method of congruence. The solid mechanics. Stress and strain. Theorem of virtual work. Linear elasticity. Clapeyron's Theorem. Kirchhoff's Theorem. Betti's Theorem. Isotropy. Navier's Equations. Beltrami - Michell Equations. De Saint-Venant 's Problem. Tresca's criterion. Von Mises's criterion. Notes on structural instability (omega method).
Reference texts
Lectures Notes - UNISTUDIUM UNIPG
Riccardo Baldacci - Scienza delle Costruzioni - UTET
Michele Capurso - Lezioni di Scienza delle costruzioni - Piatagora Editrice
Leone Corradi dell'Acqua - Meccanica delle strutture - Mc Graw Hill
Odone Belluzzi - Scienza delle Costruzioni - Zanichelli
Educational objectives
With reference to the Dublin Descriptor 1 - knowledge and under standing, the learning outcomes, expected and verified in the tests, are related to knowledge of the mechanical behavior of solids and structures in linear elastic range. In the written test, the main skill acquired (applying knowledge and under standing - Dublin Descriptor 2) are realtive to solving hyperstatic structures, calculation of displacements, analysis of the stress and strain for beams subject normal force, bending moment, torque, shear. The outcomes will also be checked, with reference to the Dublin Descriptors 3 and 4,in the oral test. As regards the calendar of the exams: http://www.ing1.unipg.it/didattica/studiare/34-calendario-appelli-esam
Prerequisites
Calculus: derivatives, integrals, functions of several variables, total and partial differential equations.
Geometry - Algebra: vector analysis, matrix analysis, surfaces.
Physics - Theoretical Mechanics: cinamatiche sizes, static equilibrium equations.
Teaching methods
Theoretical lessons and practical training
Other information
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Learning verification modality
The examination consists of two tests: a written test and an oral test.
The written exam consists of three questions: 1) resolution of a hyperstatic structure, 2) verification of beam section, 3) variable topic (beam bending, measurement displacements, analysis of stress, analysis of strain, etc.).
As part of this test will be assessed the knowledge and skills of the candidate's application (Dublin Descriptors 1 and 2) in the context both of structural mechanics that of solid mechanics. The duration of the test is about three hours.
The oral exam will focus on the entire program of the course. Please note that in the oral exam it is possible to require the solution of structures (applicative exercises) (statically indeterminate structures, internal forces in beams, etc.). In this context will check the autonomy and capabilities - command of the language (Dublin Descriptors 3 and 4). If the oral examination should be insufficient, the candidate must repeat the written test for admission.
The topics of education, that will be verified during the tests, are of great interest in the formation of a engineer oriented to the analysis, design and management of civil construction and civil infrastructure.
Calendar of examinations:
http://www.ing1.unipg.it/didattica/studiare/34-calendario-appelli-esami
Extended program
The beam model. Restraints. Kinematics of the beam. Static of the beam. Internal Forces. Internal restraints. Isostatic beams. Compatibility Equations. Equilibrium Equations. Theorem of virtual work. Constitutive Relations, Frame structures. Reticular structures. Iperstatic structures. Method of congruence. The solid mechanics. Equilibrium. Stress. Special components of stress. Cauchy Theorem. Normal stress and shear stress. Directions and principal stresses. Isotropic and deviatoric stress. Mohr circles. Deformation - strain. Tensor of strain. Geometric representation of tensor. Displacement field. Infinitesimal strain. The displacement gradient tensor and the deformation and rotation. Theorem of virtual work. Elastic potential energy. Linear elasticity. Deformation work - Clapeyron's Theorem. Kirchhoff's Theorem. Betti's Theorem. Isotropy. Navier's Equations. Beltrami - Michell Equations. De Saint-Venant 's Problem. De Saint-Venant's Postulate. Normal force. Bending moment. Shear. Torque. Tresca's criterion. Von Mises's criterion. Notes on structural instability (omega method).
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