Multibody
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. PARAMETERS FOR MODELING PASSIVE SUSPENSIONS OF SPRAY BARS
ABSTRACT The uniformity and quality of spraying depend on the stability of the spray boom, defined as the suspension system between the boom and the machine chassis. This paper presents a procedure for improving the performance of passive spray bar suspensions through parameter adjustment. Two multibody dynamics models of a tractor sprayer set were developed
Eng. Agríc.. Publicado em: 2021-05
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2. A New Buffer in Impact Reduction for Aerospace Applications
Abstract The aim of this paper is to introduce a new buffering mechanism in impact reduction during assembly process of two space vehicles. Probe-cone mechanism, due to its computational easiness, is employed to study impact interaction between multibody systems. The proposed buffer with a compact structure includes a probe equipped with axial and torsional
Lat. Am. j. solids struct.. Publicado em: 14/06/2018
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3. Flexible Multibody Dynamics Finite Element Formulation Applied to Structural Progressive Collapse Analysis
Abstract This paper presents a two-dimensional frame finite element methodology to deal with flexible multi-body dynamic systems and applies it to building progressive collapse analysis. The proposed methodology employs a frame element with Timoshenko kinematics and the dynamic governing equation is solved based on the stationary potential energy theorem wri
Lat. Am. j. solids struct.. Publicado em: 2017-01
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4. Adaptive Fuzzy Sliding-Mode Control of Wheel Slide Protection Device for ER24PC Locomotive
Abstract Wheel Slide Protection Devices (WSPD) are employed in railway vehicles to maximize the average of the possible frictional braking force, which is a nonlinear function of the slip ratio of the wheel sets. In this paper, to control the WSPD, a low-order model is presented and un-modeled dynamics are considered as uncertainties. Due to the nonlinear dy
Lat. Am. j. solids struct.. Publicado em: 2017
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5. A Comparative Study of Joint Clearance Effects on Dynamic Behavior of Planar Multibody Mechanical Systems
Abstract Clearance always exists in actual joint due to many uncertainties such as machining tolerance, assemblage and load deformation. The main purpose of this paper is to propose a computational and experimental study on the dynamic characteristics of a planar multibody mechanical system with joint clearance. For this purpose, a suitable dynamic model pla
Lat. Am. j. solids struct.. Publicado em: 2016-12
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6. Dynamic analysis and vibration control of a multi-body system using MSC Adams
AbstractIn this paper, modelling and simulation of a multi-body system for its vibration control using sensors and actuators is presented. The model developed on MSC ADAMS consists of six legs connecting moving and base plates using spherical joints with axial rotation of legs constrained. It contains linear actuator collocated with force sensor. Mathematica
Lat. Am. j. solids struct.. Publicado em: 2015-08
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7. Wear prediction for dry revolute joint with clearance in multibody system by integrating dynamics model and wear model
This work presents an investigation on wear prediction of multibody system including dry revolute clearance joint using a computational methodology. A procedure to analyze multibody system in which wear is present at revolute joints is presented. The study involves integrating a dynamics model of the mutibody system with clearance joint into a wear predictio
Lat. Am. j. solids struct.. Publicado em: 2014
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8. Non-linear dynamics of a hanging rope
Two-dimensional motion of a hanging rope is considered. A multibody system with elastic-dissipative joints is used for modelling of the rope. The mathematical model based on the Lagrange formalism is presented. Results of some numerical simulations are shown for the mechanical system with kinematic excitation. Basic tools are used to qualify dynamics of the
Lat. Am. j. solids struct.. Publicado em: 2013-01
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9. Análise estrutural em cabinas e parabrisas de caminhões pesados utilizando modelos multicorpos e elementos finitos / Structural analysis in cabs &windscreens of heavy trucks through models of multibody system and finite elements
Este projeto tem por objetivo estudar um problema de rigidez estrutural de cabina para caminhões e também da trinca de parabrisas laminados devido às forças dinâmicas geradas pelas suspensões de cabinas e chassis em caminhões pesados e extra-pesados. Essa análise será feita, inicialmente, através da validação dos modelos não lineares de amorteci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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10. Análise comparativa da dirigibilidade de um veículo na sua versão com suspensão elevada em ambiente multicorpos / Comparative analysis of vehicle handling behavior in the version with raised suspension in multibody environment
No projeto de novos veículos automotores as empresas utilizam o conceito de plataformas mundiais visando reduzir os custos de desenvolvimento, possibilitando a criação de diferentes veículos a partir de uma mesma plataforma básica. Alguns modelos conforme características mercadológicas locais requerem a alteração da atitude de suspensão com a utili
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2011
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11. Analytical models correlation for vehicle dynamic handling properties
Analytical models to evaluate vehicle dynamic handling properties are extremely interesting to the project engineer, as these can provide a deeper understanding of the underlying physical phenomena being studied. It brings more simplicity to the overall solution at the same time, making them very good choices for tasks involving large amounts of calculation
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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12. Dynamic response analysis of single-span guideway caused by high speed maglev train
High speed maglev is one of the most important reformations in the ground transportation systems because of its no physical contact nature. This paper intends to study the dynamic response of the single-span guideway induced by moving maglev train. The dynamic model of the maglev train-guideway system is established. In this model, a maglev train consists of
Latin American Journal of Solids and Structures. Publicado em: 2011-09