Scheda insegnamento (lingua inglese)

Scheda insegnamento (lingua inglese)

Stampato il 19.05.2024 ore 14:42

Title

Costruzione di macchine
Machine design

Degree

Corso di Laurea in Ingegneria Meccanica (PN) (DM 270/04)

Year

Teaching Period

Credits

Teacher: Denis Benasciutti

Academic year: 2012/2013

Objectives:

Providing basic tools to: • perform the design of machine components; • understand models and solutions usually applied by mechanical engineers to the static and fatigue analysis of mechanical structures; • perform stress and deflection analysis of structural elements by means of numerical and experimental approaches.

Requirements:

Analisi matematica I
Chimica
Fondamenti di informatica
Algebra lineare
Analisi matematica II
Economia ed organizzazione aziendale
Fisica generale I con laboratorio

Acquired skills:

being able to select the most suitable approach to perform a structural analysis
performing stress and deflection analysis of a structural mechanical component
providing a diagnosis of the failure modes of a mechanical structure

Lectures and exercises		hours
Topics	Specific contents
Introduction	Static failure of brittle and ductile materials. Safety coefficient. Examples	2
Fatigue	Basic concepts. Fatigue strength. Woehler curve. Failure analysis. Parameters affecting fatigue strength. Smith and Goodman diagram. Lifetime computation cumulative damage.	6
Notch effect	Notched geometries. Stresses: theoretical, nominal and actual. Notch coefficients.	6
Machine elements	Structural analysis on: transmission shafts, ball bearings, gears, curved beams, springs tubes.	14
Experimental strain analysis	Photoelasticity.	2
Numerical methods	Introduction to FEM.	2
EXERCISES	Numerical examples	14
Total hours for lectures and exercises		46
for exercises only		14
Further educational activities		hours
Labs		4
Tutorials / Seminars
Workshops
Guided tours

Total hours for further educational activities		4
Total hours		50

Type of exam: Written and oral

References:

A.Strozzi, Appunti del Corso di Costruzione di Macchine, Pitagora, 1998.
R.C. Juvinall, K.M.Marshek, Fondamenti della Progettazione dei Componenti delle Macchine, Edizioni ETS, Pisa, 1993.
J.E.Shigley C.R. Mischke D.Budynas Progetto e costruzione di macchine, McGraw Hill 2006.
R.J. Roark, W.C.Young, Formulas for Stress and Strain, Int. Student Edition, 1976.

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