6 documents found, page 1 of 1
Recycled reinforced PLA as ecodesign solution for customized prostheses
Gaspar, Marcelo; Ferraz, Miguel; Ramalho, Armando; Vasco, Joel; Capela, CarlosAdditive manufacturing is a key technology for the digital production of customized prostheses and orthoses. Considering that such assistive devices can be designed to meet specific biomechanical needs based on the actual contours of the patients’ limbs, the ability of those having physical disabilities being able to produce their custom prostheses and orthoses at home would be groundbreaking, by current standa...
Influence of materials and their constitutive laws on the stress fields produce...
Ramalho, Armando; Ferraz, Miguel; Gaspar, Marcelo; Capela, CarlosCurrent research uses a finite element analysis to characterize the effect of the materials mechanical and tribological properties on the interaction between the biological tissues of a transfemoral amputation and the combined prosthesis. Considering that both friction and mechanical properties influence the stress distribution between different interfaces, these were analyzed on the contacts of the prosthesis ...
Efeito do atrito no membro residual numa amputação transfemoral: influência do ...
Ramalho, Armando; Ferraz, Miguel; Gaspar, Marcelo; Capela, CarlosNeste artigo é avaliado o efeito das propriedades mecânicas e tribológicas dos materiais na interação entre os diversos componentes da prótese numa amputação transfemoral, através de uma análise por elementos finitos. O modelo numérico é desenvolvido sobre o software MSC.marc. O atrito vai influenciar a distribuição de tensões entre as diversas interfaces – prótese/liner, liner/tecidos moles e tecidos moles/oss...
Development of a preliminary finite element model to assess the effects of fric...
Ramalho, Armando; Ferraz, Miguel; Gaspar, Marcelo; Capela, CarlosThe use of numerical modelling tools allows optimizing the development of complex anatomical artefacts, such as customized prostheses for lower limb amputees. These numerical tools make it possible to characterize the interfacial interactions taking place between different parts of the prosthesis and the residual limb. This allows for understanding which rectifications and fittings having to be made on the cust...
Development of a preliminary finite element model to assess the effects of fric...
Ramalho, Armando; Ferraz, Miguel; Gaspar, Marcelo; Capela, CarlosThe use of numerical modelling tools allows optimizing the development of complex anatomical artefacts, such as customized prostheses for lower limb amputees. These numerical tools make it possible to characterize the interfacial interactions taking place between different parts of the prosthesis and the residual limb. This allows for understanding which rectifications and fittings having to be made on the cust...
Stress analysis to the outer frame of a wheelchair
Simões, José; Azevedo, Pedro; Lopes, Rui; Barros, Rui; Ferraz, Miguel; Cunha, Paulo; Costa, Pedro; Silva, Eduardo; Fernandes, André; Seabra, EuricoThe objective of the present article is to study a wheelchair in a way to lighten it and make it more comfortable to the user. For that, a structural analysis was carried out in order to study one component from the wheelchair. The component that was chosen was the outer frame since it is one of the most important elements in the structure of the wheelchair. The outer frame is a structural element that supports...