The teaching unit aims at defining the bases to understand the methods of the solid mechanics fundamental for the design of mechanical structures and machine components.
L'insegnamento si pone l'obiettivo di impostare le basi per la comprensione dei metodi della meccanica dei solidi necessarie per la progettazione ed il dimensionamento delle strutture meccaniche e dei componenti delle macchine.
The course aims to provide students of the knowledge and understanding of the criteria of structural design for static strength
The teaching unit aims to provide students with methodologies and analytical tools for the study of the state of tension / deformation in solids and structures for the purpose of evaluating resistance in the static field, with particular reference to the mechanical elements attributable to the "beam".
Attendance to lectures and guided exercises and individual study will allow the student to:
Basics of mathematics and geometry (matrix algebra, operation with vectors, differential and integral calculus...).
The lectures, together with the development of numerous exercises, also in the form of guided exercises, aim to provide the student with a logical and orderly method to follow in the applications of the theory. All the examples / exercises solved use this methodology in order to favor a good assimilation of the theoretical principles, proceeding step by step from the simple example to the more complex and articulated one. The student would also achieve a good experience in solving various problems.
Mechanics of solids and structures: forces and moments; equilibrium of deformable body; articulated assemblages of rigid members
Stresses and strains in solids. Principal stresses . Mohr's Mohr's circle plane stress
Special problems of structural mechanics: beam theory
Materials: Steels and Cast irons; Classification.
Mechanical properties of materials: tension and compression test; stress-strain diagram; stress-strain behavior of ductile and brittle materials; Hooke's law; Poisson's ratio; shear stress-strain diagram.
Axial load: Saint-venant's Principle; principle of superposition
Torsion: torsional deformation of a circular shat, angle of twist; solid noncircular beams; thin-walled bams
Bending: shear and moment diagrams and graphical method for constructing; bending deformation of a straight member; flexure formula; unsymmetric bending
Transverse shear: shear in straight members; shear formula
Static strength of materials. Ideal or equivalent stress. Strength criteria for ductile materials. Safety condition: Limit stress, Safety factor, Admissible stress.
Russell C. Hibbeler "Mechanics of Materials" ,9th edition , Pearson Education - 2013
Ricevimento: By appointment via Microsoft Teams or at DIME, Mechanics Section – Via all’Opera Pia 15/A – second floor. To schedule an appointment, send an email
https://corsi.unige.it/en/corsi/8784/studenti-orario
FUNDAMENTALS OF MACHINE DESIGN
The exam consists of a written tests, two hours long, divided into two parts.
The first part requires to solve two exercices, of different topics, difficulties and weight.
The second part includes two questions related to the theoretical topics developed in the lectures.
During the tests only white paper, pens/pensils, rulers, and a calculator. Cellular phones, tablet, or laptops are not allowed.
Students with SLD, with disabilities, or with other regularly certified special educational needs will agree with the teacher on the exam method and the compensatory instruments, by contacting the instructor at least 10 days before the exam. They will also be able to take advantage of the additional time required by law.
The first part of the test will assess the student's ability to:
The secon part of the exam will focus on the topics faced during the lectures and aims to assess to which extent the student:
