Politecnico di Torino
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Politecnico di Torino
Academic Year 2015/16
09IHRMA
Fundamentals of structural mechanics
1st degree and Bachelor-level of the Bologna process in Biomedical Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Soma' Aurelio ORARIO RICEVIMENTO PO ING-IND/14 53 27 0 0 7
SSD CFU Activities Area context
ING-IND/14 8 B - Caratterizzanti Ingegneria meccanica
Subject fundamentals
The course aims to provide the fundamental basis to perform the design and verification of structural components and mechanical systems subject to static and fatigue loads.
Topics covered, after a resume of static equilibrium concepts, are:
- evaluation of the elastic properties and the static strength of materials by tensile test and some notes on creep;
- state of stress and state of strain in mechanical elements in linear elastic conditions; combined stress failure theories; static safety factors;
- calculation of stresses in one-dimensional structural elements subjected to loads in plane and space: geometric properties of areas, de St Venant solid, equilibrium and internal forces diagrams in statically determinate systems; extensional, flexural, torsional and shear behaviour; equation of the elastic curve; elastic instability;
- definition and effect of notches: the stress concentration factor; static component verification;
- high cycle fatigue strength in terms of uniaxial stress: cyclic stress, nucleation and propagation of cracks, diagrams for the presentation of fatigue tests results; application to the verification of mechanical components, the main factors reducing the fatigue strength.
Expected learning outcomes
Knowledge and understanding of the mechanical properties and strength of materials
Knowledge of methods for describing the state of stress and the state of strain in linear elastic conditions
Knowledge of static failure criteria and the concept of safety factor
Knowledge of methods for assessing the state of strain, stress and displacements in one-dimensional structural elements
Understanding the phenomenon of fatigue; knowledge of diagrams that describe the high cycle fatigue behaviour of materials.
Knowledge of methods of verification of components subject to constant amplitude cycling stresses.
Ability to verify elements subject to known static stress.
Ability to calculate reaction forces of statically determinate structures.
Ability to calculate the internal forces diagrams in statically determinate elements subject to known applied loads.
Ability to assess the stresses and strain in sections of one-dimensional elements with and without notches , known the internal forces applied to the section.
Ability to perform fatigue assessment of components subject to constant amplitude cycling stresses.
Prerequisites / Assumed knowledge
Concepts of mathematics (study of functions and computation of derivatives and integrals, matrix algebra, eigenvalue / eigenvectors problems) and physics (basic concepts of kinematics and statics).

Programma provvisorio per l'A.A.2015/16
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