Dynamic Modeling and Simulation Analysis of the Cushioning System of the Impact Roller Based on ADAMS

2011 ◽  
Author(s):  
Zhi Jinning ◽  
Zhang Hong ◽  
Li Jie
Keyword(s):  
Modeling And Simulation ◽  
Dynamic Modeling ◽  
Simulation Analysis ◽  
The Impact

Building a Modeling and Simulation Analysis Tool to Predict Air Traffic Controller Workload and Performance

1989 ◽  
Vol 33 (2) ◽  
pp. 52-56 ◽  
Author(s):  
Ray A. Reaux ◽  
Elizabeth D. Murphy ◽  
Lisa J. Stewart ◽  
Janet L. Gresh ◽  
Karin Bruce
Keyword(s):  
Modeling And Simulation ◽  
System Design ◽  
Simulation Analysis ◽  
Air Traffic ◽  
Performance Model ◽  
Analysis Tool ◽  
Air Traffic Controller ◽  
Simulation Engine ◽  
And Performance ◽  
The Impact

To meet expected increases in domestic air traffic, the Federal Aviation Administration (FAA) will increase the level of automation in the domestic air traffic control (ATC) system. There is a need to assess the effects of the increased automation on controller workload and performance. Software-based engineering tools are needed to automate the analysis, allowing designers to identify potential problems early in the system design lifecycle. This paper describes one such tool, the Predictive Air Traffic Controller Analysis Model (PATCAM), a modeling and simulation analysis tool that uses a system operations concept and task attributes database, a controller activities model, a sector environment model and simulation engine, and a workload or performance model to predict the impact of system design changes on controller workload or performance.

scholarly journals An Approach for the Impact Dynamic Modeling and Simulation of Planar Constrained Metamorphic Mechanism

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Yanyan Song ◽  
Boyan Chang ◽  
Guoguang Jin ◽  
Zhan Wei ◽  
Bo Li
Keyword(s):  
Rigid Body ◽  
Modeling And Simulation ◽  
Dynamic Modeling ◽  
Dynamic Models ◽  
Dynamic Theory ◽  
Coefficient Of Restitution ◽  
Body System ◽  
Metamorphic Mechanism ◽  
The Impact ◽  
Impact Motion

This paper studied the impact dynamic modeling of the planar constrained metamorphic mechanism (PCMM) during configuration transformation. Based on the dynamic theory of the multi-rigid-body system and the coefficient of restitution equation, a new method for dynamic modeling of PCMM considering impact motions generated by configuration transformation is presented, which can be treated as a theoretical foundation for performance design and dynamic control. Firstly, the topology theory based on the impact motion can be classified as the stable impact motion and the mobile impact motion, which is the prerequisite for dynamic modeling and simulation. Secondly, the stable and mobile impact dynamic models for PCMM are established according to the dynamic theory of the multi-rigid-body system. Then, using these models, the corresponding impulse solving models are deduced combining with the coefficient of restitution equation. Finally, the examples of the stable impact motion and the mobile impact motion are respectively given, and the configuration-complete dynamic simulations are carried out. By comparing with the dynamic models without considering the impact motion, the dynamic characteristics of PCMM are analyzed. The theory and method proposed in this paper can be also applied in general planar robotic systems to deal with the problem of internal collision dynamics.

Identification of Critical Factors to System Performance Using Availability Modeling and Simulation Analysis

2014 ◽  
Vol 490-491 ◽  
pp. 1759-1763
Author(s):  
Hilmi bin Hussin ◽  
Ainul Akmar Mokhtar ◽  
Masdi Muhammad
Keyword(s):  
Modeling And Simulation ◽  
Simulation Analysis ◽  
Processing Plant ◽  
Critical Factors ◽  
Plant System ◽  
Availability Analysis ◽  
Future System ◽  
Gas Removal ◽  
Availability Modeling ◽  
The Impact

Availability analysis presents a means to understand the impact of existing maintenance system and maintenance resources to the overall system operational availability. The practical method for conducting availability analysis of a plant system at operation phase is illustrated and discussed via a case study of an acid gas removal system of gas processing plant. This study demonstrates that the availability modeling and simulation is effective in assessing the existing and future system configurations and determining possible impacts and critical factors to systems availability. These findings can significantly assist management to make right actions in improving plant system performances.

Dynamic Modeling and Simulation of Percussive Impact Riveting for Robotic Automation

2010 ◽  
Vol 5 (2) ◽  
Author(s):  
Yuwen Li ◽  
Fengfeng Xi ◽  
Kamran Behdinan
Keyword(s):  
Modeling And Simulation ◽  
Dynamic Modeling ◽  
Impact Dynamics ◽  
Plastic Deformations ◽  
New Approach ◽  
Pneumatic Pressure ◽  
Integration Algorithms ◽  
The Impact ◽  
Robotic Automation

Dynamic modeling and simulation of percussive impact riveting are presented for robotic automation. This is an impact induced process to deform rivets, which involves an impact rivet gun driven under pneumatic pressure to pound a rivet against a bucking bar. To model this process, first, a new approach is developed to determine the hammer output speed under input pneumatic pressure. Second, impact dynamics is applied to model the impact acting on the rivet under the hammer hits. Finally, elastoplastic analysis is carried out to derive nonlinear equations for the determination of permanent (plastic) deformations of the rivet when hitting the bucking bar. For simulation, numerical integration algorithms are applied to solve the impact dynamic model and determine the riveting time according to riveting specifications. Riveting tests are carried out for model validation. Agreement between the simulation and experimental results shows the effectiveness of the proposed method.

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