Politecnico di Torino
Politecnico di Torino
Politecnico di Torino
Academic Year 2007/08
Machine Design
1st degree and Bachelor-level of the Bologna process in Mechatronic Engineering - Verres/Ivrea
Teacher Status SSD Les Ex Lab Tut Years teaching
SSD CFU Activities Area context
ING-IND/14 5 C - Affini o integrative Discipline ingegneristiche
Objectives of the course
The aim of the course is to introduce the main concepts of the classical mechanical design. To this end the first part of the course is devoted to illustrate the main assumptions and methodologies of the stress analysis. The static and fatigue failure theories are illustrated in the second part of the course. The design of some components such as roller bearings and springs is illustrated in the end of the course.
Equilibrium and constraints of structures: load Analysis; Beam loading.
Static body stresses.
Materials: The static tensile test; strength and hardness relation; Use of 'Handbook' data for material strength properties; Cast iron, steel, and aluminum alloys.
Elastic strain, stress and deflection, De Saint Venant assumptions; load conditions: normal, shear, bending torsion; combined stresses: principal stresses, Mohr circles representation; stress concentration factors.
Failure theories, safety factors, and reliability; safety factors; Maximum normal stress theory, maximum shear stress theory, distorsion energy theory.
Fatigue; fatigue under reversed axial and bending loads: the Wohler diagram; influence of surface, size, loading, reliability; effects of mean stress: the Goodman's diagram; fatigue under multiaxial loading.
components; roller bearings; springs
Robert C. Juvinall, Kurt M. Marshek, 'Fundamentals of Machine Component Design' Wiley
Revisions / Exam
written examination, oral examination optional

Programma definitivo per l'A.A.2011/12

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