Lateral Impacts on Flexible Beams in Multibody Dynamics Simulations

2007 ◽  
pp. 173-182 ◽  
Author(s):  
Jaap Meijaard
Keyword(s):  
Multibody Dynamics ◽  
Flexible Beams ◽  
Dynamics Simulations

Multibody Molecular Dynamics I: Theoretical Development

2007 ◽  
Author(s):  
Rudranarayan M. Mukherjee ◽  
Kurt S. Anderson
Keyword(s):  
Molecular Dynamics ◽  
Multibody Dynamics ◽  
Temporal Integration ◽  
Interaction Force ◽  
Theoretical Development ◽  
Coarse Grained ◽  
Unified Framework ◽  
Multi Scale ◽  
Integration Schemes ◽  
Dynamics Simulations

This is the first paper in a series of two papers on using multibody dynamics algorithms and methods for coarse-grained molecular dynamics simulations. This paper presents the underlying framework for multi-scale modelling of biomolecules and polymers. In this framework, the system to be simulated is sub-structured into a hierarchy of multi-resolution models that are simulated using efficient multibody dynamics algorithms. The algorithms work in a unified framework, enabling efficient multi-scale (or multi-resolution) simulations. A discussion of the hierarchy of models with different resolutions along with the salient features of the appropriate multibody dynamics algorithms used for simulating them is presented. The unified scheme and the qualitative advantages of the method are discussed. Important implementation details such as boundary conditions, temporal integration schemes, interaction force field calculations and solvent models are also presented. In the next paper applications and results are discussed.

Deployment Simulation of Mooring Buoy System

2011 ◽  
Vol 141 ◽  
pp. 98-102
Author(s):  
Zong Yu Chang ◽  
Lei Wang ◽  
Da Xiao Gao ◽  
Zhong Qiang Zheng
Keyword(s):  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Numerical Method ◽  
Multibody Dynamics ◽  
Tension Force ◽  
Deployment Planning ◽  
Dynamics Simulations ◽  
Dynamics Method

Deployment of buoy systems is one of the most important procedures for buoy system’s operation. In this paper, buoy system with surface buoy, cable segments with components, anchor and so on is modeled by applying multibody dynamics method. Then numerical method is used to solve the ordinary differential equations and dynamics simulations are achieved while anchor is casting from board. The trajectories, velocity and acceleration of different nodes in buoy system are obtained. The transient tension force of each part of cable is analyzed in the process of deployment. This work is helpful for design and deployment planning of buoy system.

Development of a Multibody Dynamics Ford Expedition Model for Vehicle Dynamics Analysis

2008 ◽  
Author(s):  
Brendan J. Chan ◽  
Corina Sandu
Keyword(s):  
Multibody Dynamics ◽  
Vehicle Dynamics ◽  
Operating Conditions ◽  
Vehicle Design ◽  
Dynamics Model ◽  
Power Train ◽  
Yaw Stability ◽  
Dynamics Simulations ◽  
And Behavior ◽  
Multibody Dynamics Model

In the area of automotive engineering, testing of actual vehicles in various operating conditions during transient maneuvers is a costly and time-consuming stage of any vehicle design. However, the use of virtual proving grounds for simulation of full vehicles helps to alleviate the high cost physically testing a vehicle before mass production. This paper presents a study where a multibody dynamics model of a 2003 Ford Expedition is created for the purpose of evaluating performance and behavior in vehicle dynamics simulations. By using a dynamic model, rollover analysis and yaw stability can be analyzed. In addition to that, the vehicle model can also be used to integrate different controllers for different subsystems of the vehicle such as steering, brakes, and power-train. Preliminary simulation results are presented for proof of concept of the model.

scholarly journals Effective Implementation of Elastohydrodynamic Lubrication of Rough Surfaces into Multibody Dynamics Software

2021 ◽  
Vol 11 (4) ◽  
pp. 1488
Author(s):  
Jozef Dlugoš ◽  
Pavel Novotný
Keyword(s):  
Multibody Dynamics ◽  
Degrees Of Freedom ◽  
Combustion Engine ◽  
Rough Surfaces ◽  
Elastohydrodynamic Lubrication ◽  
Shape Reconstruction ◽  
General Purpose ◽  
Dynamics Simulation ◽  
Computational Time ◽  
Dynamics Simulations

Currently, multibody dynamics simulations are moving away from issues exclusive to dynamics to more multiphysical problems. Most mechanical systems contain contact pairs that influence the dynamics of the entire mechanism, such as friction loss, wear, vibration and noise. In addition, deformation often affects the interaction between the contact bodies. If that is the case, this effect must be considered. However, a major disadvantage arises in that it leads to an increase in the number of degrees of freedom and the computational time. Often, the general-purpose multibody dynamics software does not take into account advanced phenomena, such as a lubricated contact pair. This paper can serve as a guide to implementing the elastohydrodynamic lubrication of rough surfaces into general-purpose multibody dynamics software (in this case MSC Adams), which remains challenging. In this paper, the deformation shape reconstruction of the reduced flexible bodies is described, as well as a solution to the increase in the computational speed issues thereby caused. To alleviate this burden, advanced sensitivity analysis techniques are used. In this paper, parallel computing has been employed. The proposed method leads to reasonable computational times for the multibody dynamics simulations, including elastohydrodynamic lubrication. The proposed method is applied to the multibody dynamics simulation of the piston–liner interaction of an internal combustion engine.

Robotran-YARP Interface: A Framework for Real-Time Controller Developments Based on Multibody Dynamics Simulations

2016 ◽  
pp. 147-164 ◽  
Author(s):  
Timothée Habra ◽  
Houman Dallali ◽  
Alberto Cardellino ◽  
Lorenzo Natale ◽  
Nikolaos Tsagarakis ◽  
...  
Keyword(s):  
Real Time ◽  
Multibody Dynamics ◽  
Dynamics Simulations
Sign in / Sign up

Export Citation Format

Share Document