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Lecturer(s)
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Šuba Oldřich, doc. Ing. CSc.
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Course content
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- Properties of plastics from the point of view of product design, influence of temperature, load duration, short-term, time dependent mech. behaviour. - Technological aspects, residual deformations/stresses. Shape design from the standpoint of stiffness and load capacity, ribs of injection-moulded products. Snap fits, mech. design, technological aspects. FEM analyses in the area of plastic and composite products. - Technical theory of bending of composite beams, sandwich elements, optimisation, bimodularity. - Nonlinear bending, ultimate bending moment, principle of ultimate load design. Ultimate bending moment of one-axis symetrical sections, differ yield points in tension and compression. Calculation of ultimate loads, statical - kinematical approach. - Rubber/metal springs, linear, rotationally symmetrical case of simple shear, rotational shear. Compresive springs, shape factor, shaping function. Strain energy density of small deformations, compressibility, finite deformations of elastomers. - Hyperelastic behaviour of elastomers. - Isotropic hom. walls of thermoplastic products, membrane, bending stress/deformation shell constructions. - Isotropic walls generally layered structure, mech., thermal stresses. Thermoplastic shells with temperature gradient, stress redistribution. - Specifics of mech. behaviour of light-walled products. Buckling of cylindrical shells, long cylindrical shell, stability of ring-reinforced shells. - Anisotropic layered plates and shells - laminates. - General equations of elasticity, matrixs C,S, transformation. Symmetry of elastic properties, monotropic, orthotropic materials, elast., thermoelast. behaviour of orthotropic lamina. - Micromechanic of uniaxially reinforced 2D element, effective elastic constants. - Macromechanic of laminate structures, constitution equations of laminates. - Mechanical behaviour of injection moulded products reinforced with short fibres.
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Learning activities and teaching methods
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Methods for working with texts (Textbook, book), Individual work of students
- Preparation for examination
- 50 hours per semester
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| prerequisite |
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| Knowledge |
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| Basic knowledge of strength of materials. |
| Basic knowledge of strength of materials. |
| learning outcomes |
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| Student has knowledge about mechanical behaviour of elastic solids, technical design and dimensioning of plastic products and structures. |
| Student has knowledge about mechanical behaviour of elastic solids, technical design and dimensioning of plastic products and structures. |
| teaching methods |
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| Individual work of students |
| Methods for working with texts (Textbook, book) |
| Methods for working with texts (Textbook, book) |
| Individual work of students |
| Skills |
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| Individual work of students |
| Individual work of students |
| Practice exercises |
| Practice exercises |
| assessment methods |
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| Knowledge |
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| Oral examination |
| Oral examination |
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Recommended literature
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Agarval, B.D., Broutman, L.J. Vláknové kompozity. SNTL Praha, 1987.
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Bareš, R. A. Kompozitní materiály. Praha, SNTL, 1988.
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Brostow, W., Corneliussen, R.G. Failure of Plastics. Hanser Public, New York, 1986.
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Ezrin, M. Plastic Failure Guide. Hanser Public, New York, 1986.
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Turvey, G.J., Marshall, I.H. Buckling and Postbuckling of Composite Plates. Chapman and Hall, London, 1995.
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Vasiliev, V.V., Gurdal, Z. Optimal design. Technomic P.C., 1999.
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Williams, J.G. Stress analysis of polymers. Longman, 1973.
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