Computer Aided Design of Mechanical Structures - a.y. 2016/2017
Period (Year/Semester): I/I
Required/expected prior knowledge: Nothing
Lecturers: Armentani Enrico
The course aims at providing the knowledge of the FEM (Finite Element Method) numerical methodology for structural calculation, as well as basic knowledge of multybody and BEM (Boundary Element Method) approaches. The student will develop the needed skills on the solution of basic engineering problems with the aforementioned approaches.
Tables of contents:
Matrix analysis of structures. Characterization of the numerical methods applied to the analysis of the continuous deformable solid. The finite element method. Discretization process and solid modeling. Displacement and finite element model. Stiffness matrix of the typical elements. Stiffness matrix of assembled structure. Linear static analysis of structures. Introduction of load and boundary conditions. SPC and MPC constraints. Solving system and resolving numerical method. Finite element modelling for composite laminates. Stiffness matrices for anisotropic materials. Transformations of coordinate systems. Experimental characterization of mechanical properties for anisotropic materials. Characterization of extensional-bending laminate. The calculation for substructures. Static condensation. Geometric stiffness matrix. Geometric nonlinearity. Structural instability problems. Material non-linearity. Mass matrix. Damping matrix. Dynamic characterization of a complex structure. Discretization of the dynamic equilibrium equations. Solution for free and forced vibrations. Time integration problems. Thermo-mechanical analyses. Description of BEM technique and fields of application. Description of Multybody techniques. Simple and emblematic 2D and 3D structural applications with the use of GP FEM, BEM and Multibody codes.
Lessons, exercises, seminars and guided tours.
Textbooks and learning aids:
Material provided at the course
R. Esposito, Appunti del corso di Progettazione Assistita di Strutture Meccaniche
G. Belingardi, Il metodo degli elementi finiti nella progettazione meccanica
Assessment will be oral. Project development.