# STRENGTH OF MECHANICAL STRUCTURES

 Title ΑΝΤΟΧΗ ΜΗΧΑΝΟΛΟΓΙΚΩΝ ΚΑΤΑΣΚΕΥΩΝ / STRENGTH OF MECHANICAL STRUCTURES Code 201 Faculty Engineering School Mechanical Engineering Cycle / Level 1st / Undergraduate Teaching Period Winter Coordinator Georgios Savvaidis Common No Status Inactive Course ID 20000303

### Programme of Study: UPS of School of Mechanical Engineering

Registered students: 30
OrientationAttendance TypeSemesterYearECTS
EnergyElective Courses belonging to the other745
Design and StructuresElective Course belonging to the selected specialization (Elective Specialization Course)745
Industrial ManagementElective Courses belonging to the other745

 Academic Year 2020 – 2021 Class Period Winter Faculty Instructors Weekly Hours 4 Class ID 600170938
Mode of Delivery
• Face to face
Digital Course Content
Erasmus
The course is also offered to exchange programme students.
Language of Instruction
• Greek (Instruction, Examination)
• English (Examination)
• German (Examination)
Prerequisites
Required Courses
• 102 PHYSICS
• 103 MECHANICAL DRAWING I
• 108 STATICS
• 112 MECHANICS OF MATERIALS
• 119 MACHINE ELEMENTS I
• 101 CALCULUS I (MATHEMATICS I)
• 106 CALCULUS II (MATHEMATICS II)
• 111 DIFFERENTIAL EQUATIONS (MATHEMATICS III)
Learning Outcomes
Students shall understand multiaxial stresses, strains and dislacements acting on metallic two-dimensional structures, the relationships between them and should be able to calculate them by means of physic-mathematical equations. They shall understand elastic-plastic material behavior and the different material behavior under monotonic and cyclic loading. They shall understand and calculate the mechanical behavior acting in failure-critical locations of engineering components subjected to stochastic and random loading using the principles of Mechanics. They shall recognize technological factors affecting the strength of engineering components and they shall determine their influence on strength. They shall understand and apply the state-of-the-art methodologies to determine the lifetime of components subjected to cyclic loading with variable mean values and ranges and they shall be able to calculate and assess their lifetime.
General Competences
• Apply knowledge in practice
• Retrieve, analyse and synthesise data and information, with the use of necessary technologies
• Work autonomously
• Work in teams
• Work in an international context
• Work in an interdisciplinary team
• Generate new research ideas
Course Content (Syllabus)
Elastic deformation - Three-dimensional state of stresses and strains, plane strain, plane stress, Airy's stress function, discs, paltes, shells. Elastoplastic material deformation at monotonic and cyclic constant amplitude loading, Ramberg-Osgood law, Masing behavior, cyclic relaxation, fatigue failure, cyclic loading with variable amplitudes, material memory, cyclic loading with variable mean stresses, Haigh-diagrams, mean stress parameters, damage parameters, fatigue failure under variable mean stresses and amplitudes, Palmgren-Miner rule. Mechanics of notches, Methods for evaluation of stresses and strains in notched engineering components, Neuber's rule, influence of technological parameters (roughness, size, type of loading, residual stresses) on fatigue strength, Load spectra, range-pair method, level-crossing method, Modern fatigue life calculation methods for engineering components: Nominal Stress Concept, Notch Stress Concept, Local Strain Approach.
Keywords
discs, plates, shells, elastoplastic behavior, material fatigue, fatigue of engineering components, fatigue life calcualtion methods
Educational Material Types
• Notes
• Slide presentations
Use of Information and Communication Technologies
Use of ICT
• Use of ICT in Communication with Students
Course Organization