431 documents found, page 1 of 44

Modeling and analysis of the interaction between the crutch and the ground in h...

Biomechanics of human motion is a multidisciplinary field that involves the study of the mechanical aspects of the human body and the impact that forces have on the movement of the anatomical segments. The use of computational tools to understand the dynamic behavior of the human movement has been rising due to the wide range of applications related to improving performance or treating injury. The knowledge on ...

Desenho e representação gráfica

Este livro foi escrito para estudantes de engenharia interessados em estudar as bases fundamentais no domínio da representação gráfica. Esta obra apresenta, de forma estruturada, o quadro teórico dos assuntos abordados, bem como um leque diverso de aplicações no que diz concerne ao estudo do desenho técnico e dos sistemas de representação. As matérias versadas neste livro estão agrupadas em capítulos, incluindo...

Representações axonométricas

[Excerto] É sabido que em desenho técnico existem, fundamentalmente, dois tipos de representações, a saber: a representação ortográfica e a representação perspética. Na representação ortográfica usa-se um conjunto apropriado de vistas, as quais são obtidas segundo direções perpendiculares às faces principais do objeto que se pretende representar.

Fully cartesian coordinates with a generic rigid body: an application to biomec...

The present work explores the application of the spatial FCC-GRB formulation to the analysis and simulation of biomechanical systems, highlighting its advantages and limitations compared to other global formulations. It outlines the general principles for modeling biomechanical systems, including musculotendon units (MTU) and contact models. Additionally, this study addresses the use of mixed coordinates for co...

Kinematic and dynamic analysis of spatial multibody systems based on a formulat...

This work introduces the Fully Cartesian Coordinates Formulation with a Generic Rigid Body (FCC-GRB), a novel global multibody formulation for three-dimensional mechanical system analysis. The formulation's intrinsic characteristics are thoroughly detailed and compared with other widely-used global formulations, enabling its application in both kinematic and dynamic analysis of complex mechanical systems and as...

Cortes e secções

Cotagem nominal

[Excerto] De uma forma simples e genérica, cotagem refere-se a todas inscrições, nos desenhos técnicos, relativas a cotas e outras indicações complementares associadas às cotas.

Computational and experimental study of the interaction between a crutch and a ...

The 2022 global report on assistive technology of the World Health Organization and the United Nations Children’s Fund (UNICEF) estimates that more than 2.5 billion people globally use one or more assistive devices, and this number is expected to rise to 3.5 billion in 2050. Crutches are assistive devices utilized by disabled patients to restore the mobility lost due to the disability and regain some degree of ...

Reviewer acknowledgments and awards: Recognition awards for distinction of revi...

In 2024, members of the Mechanism and Machine Theory journal’s Editorial Board and many independent reviewers contributed their time and expertise in reviewing manuscripts. This process greatly benefits our editors, contributing authors, and ultimately our readers. In fact, the high standard and reputation of the journal is strongly shaped by the expert knowledge, generous time contribution, and commitment to m...

Teaching dynamics of mechanical systems using a practical project: the dragster...

The objective of this study is to present a simple, practical and comprehensive project to teach dynamics of mechanical systems in undergraduate level engineering courses. For that purpose, the dragster car challenge is utilized as a practical application example, for which a pedagogical activity where the students, organized in groups of five and supervised by tutor, design, model and analyze the dynamic perfo...