EQUIPMENT DESIGN for CHEMICAL INDUSTRY

Programma

 

 

 

Corso di Laurea Magistrale in ChemicalEngineering for Industrial Sustainability(LM-22)

Anno Accademico 2014 - 2015

 

CORSO di“EQUIPMENT DESIGN FOR CHEMICAL INDUSTRY”(Cod. 91286)

 

Course teacher: Prof. Giuseppe Mirone

Room# 37–Dipartimento di Ingegneria Industriale, Building 03.

Tel095-7382418, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ,personal webpage:http://www.diim.unict.it/users/gmirone/index.html

Office hours: Tue.13.00-14.30;Wed. 13:00-14:30;Thur.13.00-14.30

OBIETTIVI

The course aimsatdeliveringthe basic skills in structural analysis and design, with special focus to chemical plants-related structures and compenents.The students who positively pass an examshould be able to assess, verify and design simple piping lines, supporting structures, pressure vessels and the most typical related sub-components.

To achieve this goal is essential an extensive preliminary review of basic concepts of construction science.

The teaching methodologyof thecourse consists of lectures, exercisesto be made both in class and at home; the use of a personal computer and spreadsheets software is required.

PREREQUISITI RICHIESTI

 No preliminary knowledge of structural analysis concepts is required.

FREQUENZA LEZIONI

Student are required to attend at least 70% of the lessons, cfr. Punto 3.3 of RegolamentoDidattico of CLM in Chemical Engineering for Industrial Sustainability

TESTI DI RIFERIMENTO

  1. SHIGLEY'S MECHANICAL ENGINEERING DESIGN, Richard Budynas, Keith Nisbett, McGraw-Hill;
  2. PRESSURE VESSELS DESIGN MANUAL, Dennis R. Moss, Gulf Professional Publishing, Elsevier.
  3. PRESSURE VESSELS, David Roylance, Department of Materials Science and Engineering, Massachusetts Institute of Technology, http://ocw.mit.edu/courses/materials-science-and-engineering/3-11-mechanics-of-materials-fall-1999/modules/pv.pdf
  4. Lecture notes

PROVA D’ESAME

Appelli successivi all’erogazione del corso

Oralexaminations.

Modalità di iscrizione ad un appello d’esame

The reservation for an exam session ismandatory and must be made exclusively through the web portal students within the scheduled period.

 

Date d’esame

http://portalestudente.unict.it/portalestudente/mapServlet

 

To be published on the web portal www.Unict.it

 

 

ATTIVITA’ INTEGRATIVE

-                  Class, PC-assisted exercises

-                  Finite Elements simulations of pressurized pipes and vessels

-                  Laboratory for mechanical testing of materials

 

PROGRAMMA DEL CORSO

 

 

STRESS TENSOR

Stress definition and dimensions, Stress tensor, Invariants, Stress space coordinates, change of physical reference system, principal stresses and directions.

Examples & Exercises.

 

STRAIN TENSOR

Strain definition and dimensions, Strain tensor, Invariants, dilatational and distortional components.

Examples & Exercises.

 

STRESS-STRAIN RELATIONSHIPS

Elasticity matrix (vector representation of stress and strain), Yield criteria, basic concepts about plastic response and failure in special cases (uniaxial, torsional stress), path dependence.

Examples & Exercises.

 

STRUCTURAL PROPERTIES OF AREAS

Beam, Center of mass, Centroid, 1st order (“static”) and 2nd order (“inertia”) sectional moments, Huygens–Steiner theorem.

 

STATICS OF BEAMS

Definitions, De Saint Venant’s principle, Constraints and DOF, Normal and shear forces, Bending and torsion moments, Equations of statics for single beams, Unstable, Isostatic and Hyperstatic beams, Diagrams of Axial and Shear forces, Diagrams of Bending and torsion moments, Multiple-beams plane structures Truss structures, method of joints, method of sections

 

STRESSES AND STRAINS WITHIN DEFORMED BEAMS

Tension-compression (stress, strain, deformed shape),

Bending (Navier formula, strains distributions, equation of axis curvature, deformed beam shapes, bending of highly-curved solids), Shear (stress, strain and deformed shape of solid and thin-walled cross sections,  shear center), Torsion (stress, strain and deformed shape of solid and thin-walled axisymmetrical cross sections,  non-symmetric cross sections, principles about warping).

 

BUCKLING OF COLUMNS

Euler critical load, eccentric compression, effect of constraints, higher order buckling, membrane buckling, wrinkling.

 

THERMAL EFFECTS

Relaxation, Creep, viscoelastic response, principal material models

 

FATIGUE OF MATERIALS

Time dependent loads, difference between fatigue and high strain rate, Wohler curves, uniaxial symmetric, pulsating and intermediate loading histories, Testing methods, basic concepts about multiaxial fatigue.

 

NOTCH EFFECTS

Shape variations, uniaxial vs-triaxial stress states, geometry-material interaction, notch effect on static and fatigue response, Notch factor curves for main notch shapes

 

DESIGN OF BASIC MECHANICAL COMPONENTS

Flexural and torsional springs, specific energy parameter, main basic configurations and design problems.

Possible loads on shafts, Combined torsion, bending, shear and axial loads, bearing-load schemes, notch effect and fatigue considerations, safety factors.

 

DESIGN OF PIPES, VESSELS AND SUPPORTING STRUCTURES

Biaxial stress states, Thin sheets, Membranal behavior, typical basic configurations of pipes and vessels, positive and negative pressure effects, shape discontinuities, hatches and flange junctions, bolted joining and leakage pressure, supporting structures, internal pressure-induced loads and external loads.