FONDAMENTI DI MECCANICA E STATICA
Academic Year 2022/2023 - 2° Year- Introduction to structural mechanics - Statics: Francesco CANNIZZARO
- Physics: Fabio SIRINGO
Scientific field
- ICAR/08 - Structural mechanics
- FIS/01 - Experimental physics
Term / Semester: 1°
Introduction to structural mechanics - Statics
Expected Learning Outcomes
The module of Statics aims at delivering students the basic knowledge of the mechanics of structures, in view of the future courses of Mechanics of Structures and Design of Structures.
In particular, as shown below in the contents of the course, after dealing with the basic topics regarding the equilibrium, the statics and kinematics of rigid bodies, several plane structural typologies subjected to forces were analyzed (beams, frames, articulated systems, arches).
Such structures will be classified, characterized on the basis of a kinematic analysis, and the reactions and the force on the structure will be obtained.
Finally, a part of the course will be devoted to topics which will be applied in future courses with reference to the stress and strain analyses. In particular, the geometric properties of plane figures will be inferred.
Course Structure
Required Prerequisites
Attendance of Lessons
Detailed Course Content
- Theory of vectors and grephic statics (see the website of the course)
Polygon of forces, decomposition of a force along two assigned directions, definition of moment, resultant force and moment of a system of forces, equivalent system of forces, central axis, funicular polygon.
2.Cardinal equations of the statics (A. Greco, Scienza delle Costruzioni, Aracne Editrice, 2012)
Definition of rigid body; the principles of dynamics; equilibrium with respect to translation and rotation, graphic method, analytical and graphic applications.
3.Statics and kinematics of restrained rigid bodies (A. Greco, Scienza delle Costruzioni, Aracne Editrice, 2012)
Definition of restraint; static and kinematic characterization of external restraints; kinematics of rigid bodies; absolute centre of rotation; statically determined, statically indetermined and ill-conditioned systems; graphic and analytical evaluation of reactions for statically determined rigid bodies, uniaxial problems, bi-dimensional problems, forces, indefinite equilibrium equations, static and kinematic characterization of internal restraints, articulated systems, internal reactions, equilibrium of articulated systems, graphic method, symmetric systems, kinematic analysis of articulated systems, virtual displacement, relative centre of rotation, kinematic chains, Chasles and Kennedy's theorems, static-kinematic duality, virtual work principle for rigid bodies, computation of reaction and forces with the virtual work principle, applications.
4.Statically determined structural typologies (A. Greco, Scienza delle Costruzioni, Aracne Editrice, 2012)
Truss systems; node equilibrium method, Ritter's section method, il metodo dell’equilibrio ai nodi; il metodo della sezione di Ritter; Gerber beams, arches, physical reality and structural modelling.
5.Geometry of areas (see the website of the course)
Center of gravity of discrete and continuous systems, graphic and analytical assessment, static moment, moment of inertia, Huygens's theorem, principal axes of inertia, central ellipse of inertia, pole and anipole with respect to the central ellipse of inertial, central core or inertia, application to common sections.
Textbook Information
1) J.L. Meriam, L.G. Kraige Statics (7th edition), Wiley
2) A. Greco, Scienza delle Costruzioni, Aracne Editrice, 2012
3) E. Viola. Esercitazioni di scienza delle costruzioni – vol.1: strutture isostatiche e geometria delle masse. Pitagora, 1977.
Course Planning
Subjects | Text References | |
---|---|---|
1 | Vectors and static graphics | Provided notes |
2 | Cardinal equations of statics | Provided notes |
3 | Statics and kinematics of restrained rigid bodies | Provided notes |
4 | Statically determined structural typologies | Provided notes |
5 | Geometry of areas | Provided notes |
Learning Assessment
Learning Assessment Procedures
Examples of frequently asked questions and / or exercises
Physics
Expected Learning Outcomes
Full knowledge and understanding of the basic elements of mechanics
Course Structure
Traditional lectures
Should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.
Learning assessment may also be carried out on line, should the conditions require it.
Detailed Course Content
- Kinematics
- Laws of Dynamics
- Conservation principles
- Ideal fluids
Textbook Information
Any physics book is fine. For instance, a good book is:
D. Halliday, R. Resnick, J. Walker, Fondamenti di Fisica, Ambrosiana (Vol.I)
Course Planning
Subjects | Text References | |
---|---|---|
1 | Cinematica | D. Halliday, R. Resnick, J. Walker, Fondamenti di Fisica |
2 | Leggi della Dinamica | D. Halliday, R. Resnick, J. Walker, Fondamenti di Fisica |
3 | Principi di conservazione | D. Halliday, R. Resnick, J. Walker, Fondamenti di Fisica |
4 | Fluidi ideali | D. Halliday, R. Resnick, J. Walker, Fondamenti di Fisica |