Study programmes / C-TIMS Timber Structures and Wood Building Construction / Calculation Procedures in Technical Practice
Course code:VPTP
Course title in language of instruction:Výpočtové postupy v technické praxi
Course title in Czech:Výpočtové postupy v technické praxi
Course title in English:Calculation Procedures in Technical Practice
Mode of completion and number of credits:Fulfillment of requirements (3 credits)
(1 ECTS credit = 28 hours of workload)
Mode of delivery/Timetabled classes:full-time, 0/2; part-time, 10/0
(full-time, hours of lectures per week / hours of seminars per week; part-time, lectures per period / seminars per period)
Language of instruction:Czech
Level of course:bachelor; master; master continuing; doctor
Semester:SS 2015/2016 - FFWT
Name of lecturer:Ing. David Děcký (examiner, instructor, lecturer)
Ing. Jaromír Milch, Ph.D. (examiner, instructor, lecturer)
Ing. Václav Sebera, Ph.D. (examiner, instructor, lecturer)
Ing. Jan Tippner, Ph.D. (examiner, instructor, lecturer, supervisor)
Mgr. Ing. Miroslav Trcala, Ph.D. (examiner, instructor, lecturer)
Ing. Eva Troppová, Ph.D. (examiner, instructor, lecturer)
Ing. Barbora Vojáčková, DiS. (examiner, instructor, lecturer)
Prerequisites:none
 
Aims of the course:Application of mechanics of continuum theory, thermodynamics and biomechanics in advanced tasks of civil engineering, design and wood processing. Introduction into the finite element method. Modeling of structural, thermodynamical nonlinear geometric tasks, fluid flow and coupled physical fields. Definition of material models - introduction into the material engineering. Probabilistics models - introduction into the theory of probability. Evolutionary processes and affinity with material optimization by living organisms (emphasize to wood). Superelement formation. Nowadays models of turbulent fluid flow. Problems of static, transient and dynamic tasks.
Course contents:
1.Selected numerical methods for solution of differential equations. Introduction into the problems of variational methods. Introduction into the problems of finite element method and boundary element method. Significance of separation of domain geometry and it's physical background. Guidelines for selection of base physical phenomena of material response. Implementation of base and some advanced chapters of physics and mathematical background of selected variational methods. (allowance 0/2)
2.Modeling of structural tasks I. Base steps of structural analysis. Base classification of FE entites in the whole process of modeling. Types of geometric and finite element entites. Problems of transforamtion among local and general coordinate systems. Base principles of CAD modeling. Classification and type of finite elements in common finite element modellers. Definitions and applications of initial and boundary conditions in FE task. (allowance 0/2)
3.Modeling of structural tasks II. Homogenization of finite element mesh (isotropic and anisotropic mesh). Homogenization of material response according to different scales. Determination of sulution error. Ways of verification. Modeling of directional properties of material (isotropic, orthotropic, anisotropic, or its modifications). Base chapters from mechanics of continuum. Definitions and descriptions of stress/strain fields. Solution of stationary tasks, base assumptions and principles (equilibrium equations) (allowance 0/2)
4.Modeling of structurals models III. Definitions of material models (stress-strain diagrams). Stress state of simple material models. Simple ways of verification of CAD-FE model. Description of base properties of mechanics of continuum and evaluation of its significance and evaluation in solution process. Failure criterions: definition, implementation, ways of utilization and evaluation. Mathematical formulation and programm algoritmization of Dirichlet, Neumann and Newton boundary conditions. Physical background of eimple elastic boundary condition. (allowance 0/2)
5.Modeling of structural models IV. Probabilistic models. Principles of methods Monte Carlo and simple pseudogenerators of random numbers with fixed definition of distribution curve and its parametrs mainly Normal, Weibull, lognormal, Poisson and regular distributions. Dependency of input characteristics of structural task on variable inputs with probabilistic character. (allowance 0/2)
6.Probabilistic models. Introduction into the theory of probability. Probabilistic appearance of stress/strain field. Probability of failure. Optimization of structural task by conventional FEM. Definition, algorithmization and evaluation. Convergence and conditionality of solution. Principles of topology optimization. Basics of inverse variational methods. Evlutionary processes and affinity with material optimization by living organisms (emphasize to wood) (allowance 0/2)
7.Nonlinear models. Introduction into the nonlinear geometrical tasks. Introduction into the large strains, deflections, stiffness and softening. Advanced methods of mesh modification. Mapped mashing. Local mesh adaptavity. Substructuring of domain. Super element formulation. Introduction into the theory of systems. Concept of object and structure in FEM. (allowance 0/2)
8.Thermodynamic phenomena I. Introduction into the theory of thermodynamic continuum. Equilibrium equations -- mass, momentum, dynamics, energy, entropy. Motion and deformation of continuum. Thermodynamic characteristics. First and second thermodynamical law. Thermoviscoelastic material. Ways of heat and moisture transfer. Nowadays diffusive models for description of moisture and temperature transport. (allowance 0/2)
9.Modeling of thermodynamic phenomena II. Specifics of modeling in FEM and preparation of CAD model. Principles of phase change (fluid-solid in stable state). Degrees of freedom and definition of boundary conditions in thermodynamic tasks. Conductive, convective and radiating heat transfer model and their combinations. Solution of combined transfer of multiple species by diffusive way. (allowance 0/2)
10.Fluid-flow modeling. Navier-Stokes theorem. Compatibility equation. Laminar and turbulent fluid flow. Modeling of compressible and uncompressible fluids. Nowadays models of turbulence (standard, zero, RND, NKE, GIR, SZL). Hydrostatic and hydrodynamic pressure. Nowadays description of multiple fluids flow (ALE formulation). Steps of fluid flow analysis. (allowance 0/2)
11.Coupled physical fields. Combination of structural, thermodynamic and electromagnetic fields. Combination of structural and thermodynamical tasks with fluid flow. Introduction into the solution of acoustics tasks, oscillation (computation of eigen values of oscillation, spectra) of fast dynamic phenomena. Comparison of transient and dynamic analysis. Significance and application of modelling of physical fields in wood science and industry. (allowance 0/2)

Learning outcomes and competences:
Generic competences:
 
-ability to analyse and synthesize
-basic computing skills
-skilled at utilizing and processing information

Specific competences:
 
-Ability of combining the knowledge of biological and technical processes
-Ability to solve 3D space probles and to visualize the solution properly
-Analysis and solution of technical problems
-Knowledge of the kind of materials, their properties and using
-Obtaining knowledge

Type of course unit:optional
Year of study:Not applicable - the subject could be chosen at anytime during the course of the programme.
Work placement:There is no compulsory work placement in the course unit.
Recommended study modules:none
Assessment methods:A defense of seminary project: presentation and discussion. The project (10-20 pages, standard structure) consist of building of numerical model, numerical analysis and interpretation of results.
 
Learning activities and study load (hours of study load)
Type of teaching methodDaily attendanceCombined form
Direct teaching
     practice22 h10 h
     consultation21 h33 h
     public presentation (oral)1 h1 h
Self-study
     preparation of presentation10 h10 h
     writing of seminar paper30 h30 h
Total84 h84 h

Basic reading list
  • MADENCI, E. -- GUVEN, I. The finite element method and applications in engineering using ANSYS. New York: Springer, 2006. 686 p. ISBN 0-387-28289-0.
  • Composite Materials: Mechanical Behavior and Structural Analysis. New York: Springer Verlag, 1998. 645 p. ISBN 0-387-98426-7.
  • BRDIČKA, M. -- SAMEK, L. -- SOPKO, B. Mechanika kontinua. 3rd ed. Praha: Academia, 2005. 799 p. Česká matice technická ;. ISBN 80-200-1344-X.
  • KOLÁŘ, V. -- NĚMEC, I. -- KANICKÝ, V. FEM - Principy a praxe metody konečných prvků. 1st ed. Praha: Computer Press, 1997. 12 p. ISBN 80-7226-021-9.
  • NAKASONE, Y. -- YOSHIMOTO, S. -- STOLARSKI, T A. Engineering analysis with ANSYS software. Amsterdam: Butterworth-Heinemann, 2006. 456 p. ISBN 0-7506-6875-X.
  • Finite element analysis: theory and application with ANSYS. 3rd ed. Upper Saddle River, N.J.: Pearson Prentice Hall, 861 p. ISBN 978-0-13-241651-1.
  • Finite element simulations with ANSYS workbench 14: [theory, applications, case studies]. Mission, Kan.: Schroff Development Corp., 2012. 602 p. ISBN 978-1-58503-725-4.
  • ANSYS, I. Manuál výpočetního systému ANSYS.  [online]. URL: http://ANSYS theory reference. .
  • TOPPING, B H V. Advances in finite element procedures and techniques. Edinburgh: Civil-Comp, 1998. 298 p. ISBN 0-948749-56-3.
  • TOPPING, B H V. -- KUMAR, B. Developments in analysis and design using finite element methods. Edinburgh: Civil-Comp, 1999. 282 p. ISBN 0-948749-61-X.
  • BARBERO, E J. Finite element analysis of composite materials. Boca Raton: CRC Press, 331 p. ISBN 978-1-4200-5433-0.
  • HUTTON, D V. Fundamentals of finite element analysis. Boston: McGraw-Hill, 2004. 494 p. McGraw-Hill series in mechanical engineering. ISBN 0-07-112231-1.
  • Multiphysics modelling with finite element methods. New Jersey ;: London :, 422 p. ISBN 9789812568434.
  • Process modelling and simulation with finite element methods. Singapore: World Scientific, 2004. 382 p. ISBN 981-238-793-5.
  • ZIENKIEWICZ, O. -- TAYLOR, R. The finite element method : Basic formulation and linear problems . Volume 1. 4th ed. London: McGraw-Hill, 1989. 648 p. ISBN 0-07-084174-8.