Listar LIM - Artigos por título
Mostrando ítems 10-29 de 51
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Behaviour of Augmented Lagrangian and Hamiltonian Methods for Multibody Dynamics in the Proximity of Singular Configurations
(2016-04)[Abstract] Augmented Lagrangian methods represent an efficient way to carry out the forward-dynamics simulation of mechanical systems. These algorithms introduce the constraint forces in the dynamic equations of the system ... -
Comparison of Several Muscle Modeling Alternatives for Computationally Intensive Algorithms in Human Motion Dynamics
(Springer, 2022-04-05)[Abstract] Several approaches are currently employed to address the predictive simulation of human motion, having in common their high computational demand. Muscle modeling seems to be an essential ingredient to provide ... -
Computational structural analysis of spatial multibody systems based on mobility criteria
(Elsevier, 2022-06-22)[Abstract] Computational efficiency is a critical aspect of multibody dynamics. Recent developments in linear algebra libraries and hardware architectures allow the multibody community to improve the performance of their ... -
Determination of the 3D Human Spine Posture from Wearable Inertial Sensors and a Multibody Model of the Spine
(MDPI, 2022)[Abstract] Determination of spine posture is of great interest for the effective prevention, evaluation, treatment and evolution monitoring of spinal disorders. Limitations of traditional imaging systems, including cost, ... -
Direct Sensitivity Analysis of Multibody Systems With Holonomic and Nonholonomic Constraints via an Index-3 Augmented Lagrangian Formulation With Projections
(2018)[Abstract] Optimizing the dynamic response of mechanical systems is often a necessary step during the early stages of product development cycle. This is a complex problem that requires to carry out the sensitivity analysis ... -
Do Muscle Synergies Improve Optimization Prediction of Muscle Activations During Gait?
(Frontiers Media S. A., 2020-07)[Abstract] Determination of muscle forces during motion can help to understand motor control, assess pathological movement, diagnose neuromuscular disorders, or estimate joint loads. Difficulty of in vivo measurement made ... -
Editorial of Special Issue Combining Sensors and Multibody Models for Applications in Vehicles, Machines, Robots and Humans
(MDPI, 2021-09)[Abstract] The combination of physical sensors and computational models to provide additional information about system states, inputs and/or parameters, in what is known as virtual sensing, is becoming more and more popular ... -
Effect of gravity in wheel/terrain interaction models
(2020)[Abstract] Predicting the motion of wheeled robots in unstructured environments is an important and challenging problem. The study of planetary exploration rovers on soft terrain introduces the additional need to consider ... -
Efficient coupling of multibody software with numerical computing environments and block diagram simulators
(Springer, 2010-03-27)[Abstract] Simulation of complex mechatronic systems like an automobile, involving mechanical components as well as actuators and active electronic control devices, can be accomplished by combining tools that deal with ... -
Eigenstructure assignment and compensation of explicit co-simulation problems
(2022)[Abstract] Co-simulation is an effective and versatile way to determine the forward-dynamics behaviour of complex engineering applications. In co-simulation setups, the overall system dynamics is split into several subsystems ... -
Energy Expenditure Estimation During Crutch-Orthosis-Assisted Gait of a Spinal-Cord-Injured Subject
(Frontiers Media SA, 2019)[Abstract] Determination of muscle energy expenditure by computer modeling and analysis is of great interest to estimate the whole body energy consumption, while avoiding the complex character of in vivo experimental ... -
Energy-based monitoring and correction to enhance the accuracy and stability of explicit co-simulation
(Springer, 2022)[Abstract] The simulation of complex engineering applications often requires the consideration of component-level dynamics whose nature and time-scale differ across the elements of which the system is composed. Co-simulation ... -
Energy-Leak Monitoring and Correction to Enhance Stability in the Co-simulation of Mechanical Systems
(2019-01)[Abstract] Non-iterative co-simulation is an increasingly important technique for the simulation of complex mechanical systems. Adopting co-simulation schemes enables the simultaneous use of computational resources and ... -
Four-compartment muscle fatigue model to predict metabolic inhibition and long-lasting nonmetabolic components
(Lausanne Frontiers Media S.A., 2024-03-11)[Abstract] Computational muscle force models aim to mathematically represent the mechanics of movement and the factors influencing force generation. These tools allow the prediction of the nonlinear and task-related muscle ... -
Human motion capture, reconstruction, and musculoskeletal analysis in real time
(Springer, 2023-10-06)[Abstract] Optical motion capture is an essential tool for the study and analysis of human movement. Currently, most manufacturers of motion-capture systems provide software applications for reconstructing the movement in ... -
Index-3 divide-and-conquer algorithm for efficient multibody system dynamics simulations: theory and parallel implementation
(Springer, 2019)[Abstract] There has been a growing attention to efficient simulations of multibody systems, which is apparently seen in many areas of computer-aided engineering and design both in academia and in industry. The need for ... -
Kalman filters based on multibody models: linking simulation and real world. A comprehensive review
(Springer, 2023-03-20)[Abstract] The Kalman filter algorithm estimates variables of linear systems combining information from real sensors and a mathematical model of the system. It may be applied to observe nonlinear systems by means of a ... -
Kinematic Modelling and State Estimation of Exploration Rovers
(2019-04)[Abstract] State estimation is crucial for exploration rovers. It provides the pose and velocity of the rover by processing measurements from onboard sensors. Classical wheel odometry only employs encoder measurements of ... -
Load assessment and analysis of impacts in multibody systems
(2016-09)[Abstract] The evaluation of contact forces during an impact requires the use of continuous force based methods. An accurate prediction of the impact force demands the identification of the contact parameters on a case-by-case ... -
Lower Back Injury Prevention and Sensitization of Hip Hinge with Neutral Spine Using Wearable Sensors during Lifting Exercises
(MDPI, 2021-08)[Abstract] The popularization and industrialization of fitness over the past decade, with the rise of big box gyms and group classes, has reduced the quality of the basic formation and assessment of practitioners, which ...