Multi-Body Dynamic Simulation and Experimental Validation of Valve Spring Surge Speed

2013 ◽  
Author(s):  
R S Prabakar ◽  
Arpan Nagar ◽  
Maruthi patil ◽  
Umashankar N ◽  
Sathya Prasad Mangalaramanan PhD
Keyword(s):  
Dynamic Simulation ◽  
Experimental Validation ◽  
Valve Spring ◽  
Multi Body ◽  
Body Dynamic

The Rigid-Flexible Coupled Modeling and Dynamic Simulation of HP-20 Robot

2011 ◽  
Vol 101-102 ◽  
pp. 508-511
Author(s):  
Gang Zhang ◽  
Hai Bo Huang ◽  
Ting Zhang
Keyword(s):  
Modal Analysis ◽  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Optimization ◽  
3D Modeling ◽  
Coupled Modeling ◽  
Structural Dynamic ◽  
Modeling Software ◽  
Multi Body ◽  
Body Dynamic

The rigid-flex coupled multi-body dynamic model of Motoman HP20 was built in this paper. The parts geometry shapes were modeled in 3D modeling software and imported into the multi-body platform. Then the joints were added to the parts. The arms were analyzed in FE software and modal neutral files were obtained. Then rigid parts were replaced by the modal neutral files. Driven curves of each arm joint were obtained by D-H method. The modal analysis of system was also made to analyze the robot dynamic characters. The results give some suggestions for robot motor selection and structural dynamic optimization.

A detailed single-link track model for multi-body dynamic simulation of crawlers

2007 ◽  
Vol 44 (5) ◽  
pp. 355-364 ◽  
Author(s):  
Dror Rubinstein ◽  
James L. Coppock
Keyword(s):  
Dynamic Simulation ◽  
Single Link ◽  
Multi Body ◽  
Body Dynamic

A Study of Engine Mount Optimisation of Three-Cylinder Engine through Multi-Body Dynamic Simulation and Its Verification by Vehicle Measurement

2015 ◽  
Author(s):  
Prince Shital ◽  
Chiranjit Ghosh ◽  
Harveen Talwar ◽  
Avnish Gosain ◽  
Praneet Shanker Dayal
Keyword(s):  
Dynamic Simulation ◽  
Engine Mount ◽  
Multi Body ◽  
Body Dynamic

Analysis of Arc-Shaped Support Plate Influence on Muzzles Vibration of Gatling Gun Fire on Tripod

2013 ◽  
Vol 712-715 ◽  
pp. 1464-1467
Author(s):  
Jia Sheng Li ◽  
Zhen Qiang Liao ◽  
Ming Qiu ◽  
Fei Wang
Keyword(s):  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Theory ◽  
Support Plate ◽  
Supporting Effect ◽  
Multi Body ◽  
Body Dynamic

To improve the firing stability of Galtling gun by installing an arc-shaped support plate on a light tripod,a firing dynamic model of Gatling gun shooting on light tripod which has a arc-shaped support plate fixed on the different positions established based on rigid-flexible multi-body dynamic theory. The muzzles vibration and tripods deformation obtained through dynamic simulation. The results show that while the arc-shaped support plate fixed close to the bracket, the supporting effect to Galting gun decreased, tripods deformation and muzzles vibration increased. On the contrary, it reduced muzzles vibration and enhanced the firing stability. The analytic results provide a reference to improve the arc-shaped support plate in tripod.

scholarly journals Evaluation of Safety in Horizontal Curves of Roads Using a Multi-Body Dynamic Simulation Process

2020 ◽  
Vol 17 (16) ◽  
pp. 5975
Author(s):  
Amir Saman Abdollahzadeh Nasiri ◽  
Omid Rahmani ◽  
Ali Abdi Kordani ◽  
Nader Karballaeezadeh ◽  
Amir Mosavi
Keyword(s):  
Public Health ◽  
Dynamic Simulation ◽  
Road Safety ◽  
Safety Margin ◽  
Road Transportation ◽  
Horizontal Curves ◽  
Simulation Process ◽  
Multi Body ◽  
Body Dynamic ◽  
Lateral Friction

Road transportation poses one of the significant public health risks. Several contributors and factors strongly link public health and road safety. The design and advancement of higher-quality roads can significantly contribute to safer roads and save lives. In this article, the safety aspect of the roads’ horizontal curves under the standard of the American Association of State Highway Transportation Officials (AASHTO) is evaluated. Several factors, including vehicle weight, vehicle dimensions, longitudinal grades, and vehicle speed in the geometric design of the horizontal curves, are investigated through a multi-body dynamic simulation process. According to the AASHTO, a combination of simple circular and clothoid transition curves with various longitudinal upgrades and downgrades was designed. Three vehicles were used in this simulation, including a sedan, a bus, and a 3-axle truck. The analysis was based on the lateral friction between the tire and the pavement and also the safety margin parameter. The results showed that designers must differentiate between light and heavy vehicles, especially in curves with a high radius. Evaluation of longitudinal grade impacts indicated that the safety margin decreases when the vehicle is entering the curve. Safety margin reduction on the clothoid curve takes place with a lower grade toward the simple circular curve. By increasing the speed, the difference between lateral friction demand obtained from simulation and lateral friction demand proposed by AASHTO grows. The proposed novel methodology can be used for evaluating road safety.

Comparative Study on Dynamical Performance of Hybrid Ceramic and Steel Ball Screw Mechanism Based on Multi-Body Dynamic Simulation

2012 ◽  
Vol 532-533 ◽  
pp. 229-233
Author(s):  
Hong Kui Jiang ◽  
Li Liu ◽  
Xian Chun Song
Keyword(s):  
Dynamic Characteristic ◽  
Dynamic Simulation ◽  
High Speed ◽  
Ball Screw ◽  
Molybdenum Steel ◽  
Set Up ◽  
Multi Body ◽  
Hybrid Ceramic ◽  
Body Dynamic ◽  
Lubricant Performance

Current ceramic is used as the material for high speed ball bearing for its low density and lubricant performance; however the most common material for the high speed ball screw is chromium-molybdenum steel rather than the ceramic. Following the hertz contact and raceway control theory of the ball screw and considering the centrifugal force and gyroscopic moment acting on the ball screw, the dynamic model of high-speed ball screw was set up. The effects of different types of working ceramic ball chains on the mechanical properties of the ball screw were studied and compared through multi-body dynamic simulation. The result has shown that these factors affect the dynamic characteristic of ball screw dramatically, and the dynamic characteristic of ball screw at high speed is greatly different from that of ball screw made by chromium-molybdenum steel.

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