Virtual Work Principle
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Flexure of thick orthotropic plates by exponential shear deformation theory
In the present paper, a variationally consistent exponential shear deformation theory taking into account transverse shear deformation effect is presented for the flexural analysis of thick orthotropic plates. The inplane displacement field uses exponential function in terms of thickness coordinate to include the shear deformation effect. The transverse shea
Lat. Am. j. solids struct.. Publicado em: 2013-05
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14. Free vibration of thick orthotropic plates using trigonometric shear deformation theory
In this paper a trigonometric shear deformation theory is presented for the free vibration of thick orthotropic square and rectangular plates. In this displacement based theory the in-plane displacement field uses sinusoidal function in terms of thickness coordinate to include the shear deformation effect. The cosine function in terms of thickness coordinate
Latin American Journal of Solids and Structures. Publicado em: 2011-09
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15. Analysis of magnetic force production in slider actuators combining analytical and finite element methods
The production of magnetic forces in a magnetic actuator is the focus of the present analysis. Magnetic circuit analysis is used to investigate the direction as well as the expected order of magnitude of the force that attracts the armature into the central portion of a stationary core. A sequence of finite-element based solutions is used to investigate magn
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2011-06
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16. A refined shear deformation theory for flexure of thick beams
A Hyperbolic Shear Deformation Theory (HPSDT) taking into account transverse shear deformation effects, is used for the static flexure analysis of thick isotropic beams. The displacement field of the theory contains two variables. The hyperbolic sine function is used in the displacement field in terms of thickness coordinate to represent shear deformation. T
Latin American Journal of Solids and Structures. Publicado em: 2011-06
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17. Desenvolvimento e aplicações de sensores de campo magnético por indução : [dissertação]
This work addresses the development of magnetic elds meters at low frequencies. The sensing elements used are induction coils and the Chattock-Rogowski coils, both with non-ferromagnetic cores. Theoretical and experimental studies on the working principle of these sensors are presented, considering the practical aspects related to their non-ideal behavior. T
Publicado em: 2009
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18. Mathematics Teaching with TelEduc support: an ethnographic experience on an Administration Course / Ensino de Matemática com o apoio do TelEduc: experiência etnográfica em um curso de Administração
The investigation presented here is based on the scoop of the Teaching and Learning of Science and Mathematics, from the Post-Graduation program in Education in Science and Mathematics, from the Federal University of Goiás and its main goal is to study a group of second-year students from the Administration Course, evening-course, from a private college, lo
Publicado em: 2009
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19. A formação do gestor educacional da escola pública em ambientes virtuais de aprendizagem: trilhando caminhos na via da complexidade / The formation of educational manager in virtual environments: a research based on the theory of complexity
This academic work researches the potentiality of dialogic approach in the Theory of Complexity based on Transdisciplinarity and Ecossistemic Thought to online formation of educational manager of brazilian public schools. It is linked to RIES (Red Internacional de Ecología de los Saberes), which defends the humanist approach as an alternative to the contrad
Publicado em: 2009
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20. Modelos constitutivos para materiais hiperelásticos: estudo e implementação computacional / Constitutive models for hyperelastic materials: study and computational implementation
The main objective of this work is to implement nonlinear hyperelastic constitutive models in a computational code of geometrically nonlinear analysis of shells. For this purpose, concepts of linear and tensor algebras, kinematics, strain, stress, balances, variational principles, numerical methods and hyperelasticity are necessary. Such program uses the pos
Publicado em: 2008
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21. DYNAMIC BEHAVIOR OF BURIED PIPES: METHODOLOGY AND COMPUTATIONAL IMPLEMENTATION / COMPORTAMENTO DINÂMICO DE DUTOS ENTERRADOS: METODOLOGIA E IMPLEMENTAÇÃO COMPUTACIONAL
This work presents a numerical methodology for the analysis of buried pipes employed by the transport of oil and gas subject to dynamic loads. Emphasis is given to seismic loads. A finite element model based on a special class of beam element for the pipe representation is employed. Both geometric and material nonlinearities are considered in a total Lagrang
Publicado em: 2008
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22. A experiência na formação do professor que atua em ambientes virtuais / A experiência na formação do professor que atua em ambientes virtuais
This work addresses the knowledge derived from experience for the training of teachers that act in a virtual learning environment. More specifically, it tries to understand how teachers identify the relations originating from experiences in virtual environments lived in the roles of student, teacher, monitor, manager or tutor with the one lived in the School
Publicado em: 2007
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23. Influência do comportamento estrutural no erro de posicionamento de uma máquina de cinemática paralela. / Influence of the structural behavior in the error of positioning of a parallel kinematic machine.
In spite of the effort spent by the academic and industrial communities (goods, patents and laboratory prototypes), the Parallel Kinematics Machines - PKMs - they still present an inexpressive participation in the market of machine-tools and robots. One of the reasons for this fact is their low indexes of accuracy and precision, in comparison with the machin
Publicado em: 2007
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24. Técnica de elementos finitos para análise limite de pórticos planos associada à automação do processo de modelagem 3d de estruturas reticuladas via cad
The present work presents a finite element technique for the limit analysis of plane frames using linear programming (LP). The formulation is integrated with a CAD (Computer Aided Design) system developed to automate the modeling of threedimensional and two-dimensional reticular structures. The CAD system developed, named structural modeler, works as pre and
Publicado em: 2006