Compliant Mechanisms
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Topology optimization of compliant mechanisms / Otimização topologica de mecanismos flexiveis
In this work, we study some possible formulations for the topology optimization problem of a compliant mechanism, proposed by Nishiwaki et al. [33], Lima [26] and Sigmund [37]. To solve the nonlinear programming problem associated to each formulation, we use a globally convergent version of the Sequential Linear Programming, inspired in the Gomes et al. [18]
Publicado em: 2009
-
2. O lazer e a recreação na Revista Brasileira de Educação Física e Desportos como dispositivos educacionais (1968-1984)
This paper identifies the prescripts of leisure and recreation during the military period. It departs from the assumption that the concepts of leisure and recreation translated the expectancy of building compliant and disciplined bodies in order to control the population, so that they would be aligned with the military government ideal, thus creating conditi
Publicado em: 2008
-
3. Aplicação do método da otimização topológica para o projeto de mecanismos flexíveis menos suscetíveis à ocorrência de dobradiças. / Topology optimization to design hinge-free compliant mechanisms.
Os mecanismos flexíveis são dispositivos capazes de transmitir força e movimento através da deformação elástica. Têm grande importância a uma série de aplicações nas quais os mecanismos de corpos rígidos não seriam viáveis, como por exemplo, os sistemas microeletromecânicos. Existem várias maneiras pelas quais os mecanismos flexíveis podem
Publicado em: 2007
-
4. Design of multi-phase micromechanisms using the topology optimization method. / Projeto de micromecanismos multifásicos usando o método da otimização topológica.
A micromechanism is essentially a device of milimetric, or even micrometric, dimensions that can actuate as a gripper, tweezers, clamp, etc. When coupled to an electronic system, they are called "Micro-Electro-Mechanical Systems" (MEMS). Almost all of these devices are constituted by compliant mechanisms, where the motion is allowed by the compliance of its
Publicado em: 2006
-
5. Changes in the length of the human biceps brachii muscle during elbow movements.
1. Needles inserted into the biceps move with the muscle as the elbow flexes or extends. Pairs of needles were used to indicate changes in length of the muscle fibres. 2. During low-frequency flexion-extension movements the biceps lengthened as the joint extended. 3. When, however, joint movements at greater than 2.2 Hz were maintained by external electrical
-
6. Robust passive dynamics of the musculoskeletal system compensate for unexpected surface changes during human hopping
When human hoppers are surprised by a change in surface stiffness, they adapt almost instantly by changing leg stiffness, implying that neural feedback is not necessary. The goal of this simulation study was first to investigate whether leg stiffness can change without neural control adjustment when landing on an unexpected hard or unexpected compliant (soft
American Physiological Society.
-
7. Effect of propranolol on left ventricular function, segmental wall motion, and diastolic pressure-volume relation in man.
Precise quantitation of the effects of the non-selective beta adrenergic blocking drug propranolol (3.15 mg/kg body weight) on left ventricular function, segmental wall motion, and diastolic pressure-volume relation in man has been performed. High fidelity left ventricular pressure measurements and simultaneous single-plane angiocardiograms were recorded on