Projeto e simulação de muleta alta feita de bambu
Crutches are essential equipment to help people who have some kind of temporary or permanent limitation in locomotion, but frequent use can cause several types of injuries, especially in the users' armpits and wrists, due to the pressure caused by the reaction of the supports on these parts of...
| Autor principal: | Ostapiv, Gabriel |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2022
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/27672 |
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| Resumo: |
Crutches are essential equipment to help people who have some kind of temporary or permanent limitation in locomotion, but frequent use can cause several types of injuries, especially in the users' armpits and wrists, due to the pressure caused by the reaction of the supports on these parts of the human body. This work has as main objective to build and test prototypes of a tall bamboo crutch, with an innovative shape being taller than the user. It is expected that this type of crutch will reduce the rate of injuries from frequent use, as well as expand the functions of the equipment, making it possible to use accessories such as umbrellas and lanterns, since its use is difficult due to the fact that the user with both hands busy when traveling. Still in this work, numerical computational analyzes were developed on a virtual model of the new bamboo crutch, seeking to evaluate the deflections on the equipment, caused by mechanical efforts of vertical loading. Pieces of bamboo stalks of the species Phyllostachys aurea, also known as cane-india, from fishing rods, sold commercially, were used as structural material in the prototype. The purpose of using fishing rods is to allow easy reproduction as well as to reduce the productive cost, in order to make this type of crutch accessible to the low-income population. The computer numerical simulation was performed with the ANSYS academic software, from Workbench, used for structural analysis of complex geometries, and for the creation and improvement of prototypes. As a result, the simulated, manufactured and tested crutch proved to be mechanically resistant, easy to build, low cost and functionally efficient, adding new functions compared to traditional equipment. According to the results of the numerical simulation, there is a maximum displacement in the critical region of the crutch, it was about 1.9 mm, tending to open the upper arch of the crutch, when the peak load found by Goh et al (1986) was applied. The field tests suggested that the crutch fulfill the objective of reducing pressure and discomfort in the user's armpits, due to the use of elastic straps and velcro-padded straps; and proved to be functional, supporting the weight of an 80 kg person. |
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