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DESIGN WITH COMPOSITE MATERIALS

Valentino Paolo BERARDI DESIGN WITH COMPOSITE MATERIALS

0622300046
DEPARTMENT OF INDUSTRIAL ENGINEERING
EQF7
MECHANICAL ENGINEERING
2023/2024



YEAR OF COURSE 2
YEAR OF DIDACTIC SYSTEM 2018
AUTUMN SEMESTER
CFUHOURSACTIVITY
660LESSONS
VALENTINO PAOLO BERARDI T Curriculum
Objectives
THE COURSE PROVIDES THE FUNDAMENTALS OF MAIN ADVANCED MECHANICAL MODELS AND APPROACHES ADOPTED IN STRUCTURAL ANALYSIS AND DESIGN OF COMPOSITE COMPONENTS IN THE FIELDS OF INDUSTRY, AUTOMOTIVE, BOATING, AVIATION AND AEROSPACE.
COMPOSITE MATERIALS PLAY A CENTRAL AND STRATEGIC ROLE IN THE FOURTH INDUSTRIAL REVOLUTION (INDUSTRY 4.0) DUE TO THEIR PARTICULAR ATTRACTIVENESS AND COMPETITIVENESS IN THE FIELD OF INDUSTRIAL MANUFACTURING, DUE TO THEIR LIGHTNESS, THEIR HIGH MECHANICAL PROPERTIES, THE REDUCED MANUFACTURING LEAD TIME, THEIR REMARKABLE VERSATILITY AND FLEXIBILITY TO DIFFERENT TECHNICAL-FUNCTIONAL REQUIREMENTS.

KNOWLEDGE AND UNDERSTANDING
THE COURSE EXTENDS THE KNOWLEDGE ON STRUCTURAL MEMBERS MADE OF HOMOGENEOUS AND ISOTROPIC MATERIALS, ALLOWING A MORE IN-DEPTH UNDERSTANDING OF THE MECHANICAL BEHAVIOR OF ELEMENTS BUILT WITH INNOVATIVE ORTOTROPIC MATERIALS, LIKE AS COMPOSITES BASED ON POLYMERIC, CERAMIC AND METALLIC MATRIX, AND THE MECHANICS OF CORRESPONDING STRUCTURAL JUNCTIONS.

APPLYING KNOWLEDGE AND UNDERSTANDING
THE COURSE PROVIDES USEFUL AND PRACTICAL TOOLS FOR:
-THE DESIGN, OPTIMIZATION AND VERIFICATION OF COMPOSITE COMPONENTS, COMPOSITE SYSTEMS AND CORRESPONDING STRUCTURAL JUNCTIONS;
-THE USE OF THE FINITE ELEMENT METHOD (FEM) FOR STRUCTURAL APPLICATIONS IN THE FIELDS OF INDUSTRY, AUTOMOTIVE, BOATING, AVIATION AND AEROSPACE.

MAKING JUDGEMENTS
BY THE END OF THE COURSE, THE STUDENT WILL DEVELOP A CRITICAL SENSE IN IDENTIFYING THE MOST SUITABLE THEORIES AND MODELS FOR STRUCTURAL ANALYSIS COMPOSITE COMPONENTS AND COMPOSITE SYSTEMS.

COMMUNICATION SKILLS
EXPLAINING THE KEY ASPECTS OF STRUCTURAL MODELLING IS THE MOST IMPORTANT EXPECTED COMMUNICATION SKILL.

LEARNING SKILLS
THE ABILITY OF APPLYING THE ACQUIRED KNOWLEDGE TO STRUCTURAL PROBLEMS IN CONTEXTS DIFFERENT FROM THOSE PRESENTED DURING THE COURSE.
Prerequisites
THE KNOWLEDGE OF THE CONTINUUM MECHANICS, THE THEORY OF ELASTICITY, THE ENERGY PRINCIPLES, THE BEAM THEORY, THE ELASTOSTATIC AND ELASTODYNAMIC PROBLEMS IS REQUIRED.
Contents
THE COURSE DURATION IS 60 HOURS (THEORETICAL LECTURES: 35 HOURS; CLASSROOM PRACTICES: 10 HOURS, SEMINARS:15 HOURS)

THE THEMES DEVELOPED DURING THE COURSE ARE REPORTED IN THE FOLLOWING.

COMPOSITE MATERIALS: DEFINITION, PHYSICAL PROPERTIES, CLASSIFICATION (COMPOSITES WITH PARTICLES; FIBRE COMPOSITES: LONG FIBER, SHORT FIBER; MATRIXES: POLYMERIC, METALLIC, CERAMIC. FIBERS: METALLIC, GLASS, ARAMID, CARBON, NATURAL). (3 HOURS)

ELASTIC, LINEAR ELASTIC AND LINEAR HYPERELASTIC MATERIALS: STIFFNESS MATRIX FOR AN ANISOTROPIC LINEAR HYPERELASTIC MATERIAL. ORTHOTROPIC MATERIAL, TRANSVERSELY ISOTROPIC MATERIAL. (5 HOURS)

MINDLIN’S THEORY: DEFINITIONS, ASSUMPTIONS, KINEMATIC MODEL, GENERALIZED STRESSES AND DEFORMATIONS, EQUATIONS OF EQUILIBRIUM, CONSTITUTIVE LAWS, ELASTOSTATIC PROBLEM. (5 HOURS)

LAMINA MICROMECHANICS: DEFINITIONS, ELASTIC CONSTANTS, STRENGTHS. (3 HOURS)

LAMINA MACROMECHANICS: DEFINITIONS, STIFFNESS MATRIX AND COMPLIANCE MATRIX, EVALUATION OF THE ELASTIC CONSTANTS ALONG AN ARBITRARY DIRECTION, CASE STUDIES. (4 HOURS)

CLASSICAL LAMINATION THEORY: DEFINITIONS, ASSUMPTIONS, ANALYSIS OF GENERALIZED STRESSES AND STRAINS OF THE LAMINATE, ANALYSIS OF LOCAL STRESSES AND STRAINS IN AN ARBITRARY LAYER, STIFFNESS MATRIX AND COMPLIANCE MATRIX, BALANCED LAMINATES, SYMMETRIC LAMINATES, ORTHOTROPIC LAMINATES, QUASI ISOTROPIC LAMINATES, CASE STUDIES. (5 HOURS)

FAILURE MECHANISMS AND CRITERIA: DEFINITIONS, FAILURE MODES FOR SIMPLE STRESSES (TENSILE AND COMPRESSIVE NORMAL STRESSES ALONG LONGITUDINAL DIRECTION, TENSILE AND COMPRESSIVE NORMAL STRESSES ALONG TRANSVERSE DIRECTIONS, SHEAR STRESSES), FAILURE CRITERIA (MAXIMUM TENSION, MAXIMUM DEFORMATION, TSAI-HILL AND TSAI -WU), FPF LOAD, POST-FPF ANALYSIS, ANALYSIS OF CROSS-PLY LAMINATES, INTERLAMINAR STRESSES. (5 HOURS)

EXPERIMENTAL CHARACTERIZATION OF COMPOSITES: TENSILE TEST, COMPRESSION TEST, SHEAR TEST, BENDING TEST, DELAMINATION TEST. (5 HOURS)

JUNCTIONS OF COMPOSITE SYSTEMS: DEFINITION, SINGLE AND DOUBLE OVERLAPPING ADHESIVE JOINT, STRESS DISTRIBUTION, JOINT LENGTH AND MAXIMUM LOAD, EFFECT OF JOINT THICKNESS, EFFECT OF ADHESIVE THICKNESS, NOTES ON BOLTED JOINTS, CASE STUDIES. (10 HOURS)

FEM MODELING AND CASE STUDIES: FEM MODELS FOR COMPOSITES AND FOR ADHESIVE JUNCTIONS OF COMPOSITE SYSTEMS, USE OF FEM CODES FOR APPLICATIONS IN THE FIELDS OF INDUSTRY, AUTOMOTIVE, BOATING, AVIATION AND AEROSPACE, SEMINARS GIVEN BY EXPERTS. (15 HOURS)
Teaching Methods
LECTURES AND LABORATORY EXCISES BY USING FEM CODES ARE THE MAIN TEACHING FORMAT.
Verification of learning
THE FINAL TEST CONSISTS OF AN ORAL INTERVIEW, WHICH COVERS THE THEORETICAL AND PRACTIVE ASPECTS.

THE ORAL TEST, DEVELOPED THROUGH A WRITTEN TEST, AND COMPLETED WITH AN ORAL DISCUSSION AFTERWARDS, CONSISTS IN 5 QUESTIONS. FOR EACH ANSWER, THE STUDENT GETS 30 POINTS AS A MAXIMUM. A MINIMUM OF 18 POINTS IS REQUIRED FOR EACH ANSWER.

THE FINAL MARK (POSSIBLY WITH LAUDEM), IS, USUALLY, THE MEAN VALUE OF THE MARKS OF THE WRITTEN AND THE ORAL TESTS.
Texts
-ONLINE NOTES.
-E.J. BARBERO, “INTRODUCTION TO COMPOSITE MATERIAL DESIGN”, TAYLOR AND FRANCIS, NEW, YORK, 1999.
-J.N., REDDY, “MECHANICS OF LAMINATED COMPOSITE PLATES”, CRC PRESS, 1997.
-J. N. REDDY, “THEORY AND ANALYSIS OF ELASTIC PLATES AND SHELLS”, 2ND ED., TAYLOR & FRANCIS, 2007.
-I. BABUSKA, T. STROUBOULIS, “THE FINITE ELEMENT METHOD AND ITS RELIABILITY”, OXFORD UNIVERSITY PRESS, OXFORD, 2001.
More Information
ON LINE NOTES ARE AVAILABLE AT WEBSITE: HTTP://DOCENTI.UNISA.IT/004668/RISORSE
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