
prof. dr hab. inż. Wojciech Witkowski
Zatrudnienie
- Profesor w Katedra Wytrzymałości Materiałów
Kontakt
- wojciech.witkowski@pg.edu.pl
Profesor
- Miejsce pracy
-
Gmach Główny
pokój 170 otwiera się w nowej karcie - Telefon
- (58) 347 18 91
- wojciech.witkowski@wilis.pg.gda.pl
Wybrane publikacje
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Modeling of Composite Shells in 6-Parameter Nonlinear Theory with Drilling Degree of Freedom
Within the framework of a 6-parameter nonlinear shell theory, with strain measures of Cosserat type, constitutive relations are proposed for thin elastic composite shells. The material law is expressed in terms of five engineering constants of classical anisotropic continuum plus an additional parameter accounting for drilling stiffness. The theory allows for unlimited displacements and rotations. A number of examples are presented...
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Geometrically nonlinear FEM analysis of FGM shells based on neutral physical surface approach in 6-parameter shell theory
The paper presents the formulation of the elastic constitutive law for functionally graded materials (FGM) on the grounds of nonlinear 6-parameter shell theory with the 6th parameter being the drilling degree of freedom. The material law is derived by through-the-thickness integration of the Cosserat plane stress equations. The constitutive equations are formulated with respect to the neutral physical surface. The influence of...
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Nonlinear FEM 2D failure onset prediction of composite shells based on 6-parameter shell theory
Within the framework of the nonlinear 6-parameter shell theory with the drilling rotation and asymmetric stress measures, the modifications of Tsai-Wu and Hashin laminate failure initiation criteria are proposed. These improvements enable to perform first ply failure estimations taking into account the non-symmetric stress measures. In order to check the validity of the proposed criteria, finite element analyses are performed with...
Uzyskane stopnie/tytuły naukowe
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2011-11-23
Nadanie stopnia naukowego
dr hab. inż. Budownictwo (Dziedzina nauk technicznych) -
2005-03-16
Nadanie stopnia naukowego
dr inż. Budownictwo (Dziedzina nauk technicznych)
wyświetlono 1052 razy