Results 71 to 80 of about 6,195,717 (234)

Modeling of Flexible Multibody Systems Excited by Moving Loads with Application to a Robotic Portal System [PDF]

, 2012
In this paper, an approach to solve mechanical problems with moving loads and flexible bodies is presented. Therefore, the multi-disciplinary modeling language Modelica together with the DLR FlexibleBodies Library is utilized.
Hartweg, Stefan, Heckmann, Andreas
core  

Wear prediction for dry revolute joint with clearance in multibody system by integrating dynamics model and wear model

Latin American Journal of Solids and Structures
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.
Z.F. Bai, H.B. Zhang, Y. Sun
doaj   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

Parameter Sensitivity Analysis : Symbolic Computation for Large Multibody Systems [PDF]

, 2010
The purpose of the present research relates to the sensitivity analysis of complex multibody models involving a large number of bodies and nonlinear kinematic loops and/or force constitutive laws.
Poncelet, Antoine, Fisette, Paul, Proceedings of the first Joint International Conference on Multibody System Dynamics, Collard, Jean-François   +3 more
core  

Hexapod Locomotion Across Structured and Unstructured Terrains: A Data‐Driven Review of Modeling, Control, and Validation

Journal of Field Robotics, EarlyView.
ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley   +1 more source

Active Damping of Railway Carbody Vibrations with Piezoelements [PDF]

, 2004
This paper presents a methodology for the simulation and control of smart structures with piezoceramic patches by means of multibody dynamics. A theoretical background is mentioned adapting a modal multifield approach.
Heckmann, Andreas, Vaculin, Ondrej
core  

On the Numerical Treatment of Nonlinear Flexible Multibody Systems with the Use of Quasi-Newton Methods [PDF]

, 2019
This paper deals with the use of quasi-Newton methods for dynamical simulations of nonlinear flexible multibody systems which are modelled using absolute nodal coordinate formulation (ANCF).
Radek Bulín, Bulín, Radek, Hajžman, Michal, Michal Hajžman   +3 more
core   +1 more source

Multibody for Everybody (M4E): A Symbolic Dynamics Modeling Tool with Applications in Simulation, Control, and Optimization

Machines
Developing the analytical model of a multibody system is often the initial step in control and optimization. The analytical model (equations of motion) describes a system’s time evolution under specified forcing conditions.
Sahand Sabet, Alvaro Diaz-Flores Caminero   +1 more
doaj   +1 more source

Unraveling authoritarian reform decision‐making: A metacognitive–subcognitive model

American Journal of Political Science, EarlyView.
Abstract Recent research indicates that state reforms in East and Southeast Asia have been predominantly top‐down and authoritarian‐led. However, this significant observation implicitly relies on important assumptions about authoritarian decision‐making behavior and psychology that remains understudied.
Eugene Yu Ji
wiley   +1 more source

Structural sensitivity analysis of flexible multibody systems modeled with the floating frame of reference approach using the adjoint variable method [PDF]

, 2016
For the efficient analysis and optimization of flexible multibody systems, gradient information is often required. Next to simple and easy-to-implement finite difference approaches, analytical methods, such as the adjoint variable method, have been ...
Seifried, Robert, Knüfer, Sven, Held, Alexander   +2 more
core