Simulación de una ley de contracción para modelos musculoesqueléticos

Rodríguez Roca, Pablo (2019). Simulación de una ley de contracción para modelos musculoesqueléticos. Thesis (Master thesis), E.T.S.I. Industriales (UPM).

Description

Title: Simulación de una ley de contracción para modelos musculoesqueléticos
Author/s:
  • Rodríguez Roca, Pablo
Contributor/s:
  • Muñoz Sanz, José Luis
Item Type: Thesis (Master thesis)
Masters title: Ingeniería Industrial
Date: June 2019
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Currently there are several musculoskeletal models that calculate forces and reactions in muscles and bones from specific movements. All of them are based on the three-element model developed by (Zajac, 1989) based on the experiments carried out by Hill (Hill A., 1938). For the dynamics it is needed to know the contracting speeds of both the muscle and the tendon. However, the models do not have enough equations to calculate these two terms independently. This is why all the models based on the Hill model assume that the tendon is much more rigid than the muscle. This assumption introduces an unknown error in the calculations. Therefore, a new model was proposed by (Sharifimajd & Stålhand, 2013) that was later developed by (Roser, 2019). This model does not need to make use of the assumption and it needs to be tested. In this master thesis, this new model has been developed and tested in MATLAB. Furthermore, with the help of AnyBody commercial software, which uses Hill model, it has been deter-mined whether the proposed model is realistic, and the error introduced when supposing that the speed of contraction of the tendon is zero. Results show that this new model is coherent with the reality, having the same steady state values in both models. However, it has been found that the response in MATLAB is delayed between 11 and 233 milliseconds depending on the case. This is enough to consider this model an alternative and it is worth developing further.

More information

Item ID: 65399
DC Identifier: https://oa.upm.es/65399/
OAI Identifier: oai:oa.upm.es:65399
Deposited by: Biblioteca ETSI Industriales
Deposited on: 01 Dec 2020 15:18
Last Modified: 21 Jan 2021 23:30
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