Modelagem paramétrica de pórticos rolantes: estabilidade estrutural e otimização. / Gantry cranes parametric modeling: structural stability and optimization.
AUTOR(ES)
Gustavo Sobue
DATA DE PUBLICAÇÃO
2005
RESUMO
The objective of this work is to develop a tool to generate an automatic structural design of gantry cranes. With an automatic generation of finite element models and also a design report, this routine allows a fast verification against yield of material and structural instability. The use of the finite element method was chosen for the structural design because it is a modern analysis tool that permits the evaluation of geometric configurations for which there are no analytical formulations available. However, the time necessary to build these models may be high, especially if there are changes in the initial geometry and many load cases. The use of a pre-processor allows the evaluation of a series of geometric alternatives, within which would be chosen the one with the lowest cost that attends the clients specifications. Like many other engineering problems, there are no direct equations to find an adequate structure; there are only verification procedures available; the optimum structures are searched by trial and error, based on the designers experience. To accelerate this search process, an optimization routine was developed. Mass reduction was adopted as the objective function, which leads to reduction of the cross section area of the beams. Yield strength and buckling were adopted as restrictions to this optimization. Excel (Microsoft), Ansys (Ansys Inc) and Mathcad (Mathsoft) software were integrated to provide an user-friendly interface, reliable structural analysis and an automatic report generation.
ASSUNTO(S)
parametrização e otimização elementos finitos máquinas de elevação e transporte parametrization and optimization transportation and lifting machines finite elements gantry cranes pórticos rolantes
Documentos Relacionados
- Mutually connected DPLL networks: modelling, simulation and optimization.
- STRUCTURAL OPTIMIZATION OF PLANE FRAMES
- Tolerâncias dimensionais em conjuntos mecânicos: estudo e proposta para otimização.
- Mathematical modeling of an industrial process for chlorine and caustic manufacturing using brine electrolysis aiming at its optimization.
- Modelagem e otimização de custos logísticos