Parachute simulation: integration methods

• Autor(a) principal: Pimentel, Pedro Ismael Pavinski
• Data de Publicação: 2021
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: eng
• Título da fonte: Repositório Institucional da UFU
• Texto Completo: https://repositorio.ufu.br/handle/123456789/33460
• topic: Parachute simulation; Integration methods; Mass-spring model; Finite-element method; Darcy-forchheimer; CNPQ::ENGENHARIAS::ENGENHARIA AEROESPACIAL::ESTRUTURAS AEROESPACIAIS::AEROELASTICIDADE

Mass-spring models are frequently employed in parachute simulations due to their simplicity and efficiency. A series of integration methods can be used to solve the dynamic system, however their use presents some difficulties often associated with the stability, accuracy and the computational resources consumption. We compared some of these methods in four different situations: simple pendulum, spring pendulum and two parachute models, and for each system the behavior of the integration methods was different. In the parachute simulations, which are the main objective of this thesis, the Improved Explicit Euler presented the best performance in the first model, although the simulation ended up diverging. For the second model, all of the tested schemes worked.