scholarly journals Dynamic analysis of material motion using MATLAB/Simulation environment and test verification

2020 ◽  
Vol 12 (9) ◽  
pp. 168781402095780
Author(s):  
Mei Fang ◽  
Zhihong Yu ◽  
Wenjie Zhang
Keyword(s):  
Dynamic Analysis ◽  
Structural Design ◽  
Simulation Analysis ◽  
Model Simulation ◽  
Maximum Relative Error ◽  
Matlab Simulation ◽  
Simulation Results ◽  
Low Efficiency ◽  
Test Verification ◽  
The Mathematical Model

Throwing device is an important factor that directly affects the performance of chaff cutter. In this work, the dynamic analysis linked with the problem of low efficiency and residue blockage of disc knife chaff cutter is executed. Based on this perspective, the mathematical model, simulation, and testing of the material movement have been carried out. Simulations are performed in MATLAB/Simulink environment. An anemometer records the airflow velocity, which provides data for simulation analysis. The simulation results showed that during the movement along the blade, the material first performs deceleration and then accelerates; in other stages, only deceleration. And finally calculated the throwing distance. To support the presented simulations, an experimental study is conducted. The experimental results are compared with simulation results, the maximum relative error between the simulated value and the experimental value is 9.42%, which verified the correctness of the model. This research provides a theoretical basis for the structural design, parameter optimization, and matching of the chaff cutter.

The Model Simulation Analysis of Electro-Rheological Fluid Engine Mounting System

2013 ◽  
Vol 694-697 ◽  
pp. 338-343 ◽  
Author(s):  
Bo Jiang ◽  
Wen Ku Shi
Keyword(s):  
Mathematical Model ◽  
Electric Field ◽  
Vibration Isolation ◽  
Simulation Analysis ◽  
Model Simulation ◽  
Simulation Results ◽  
Set Up ◽  
The One ◽  
The Mathematical Model ◽  
Better Than

The mathematical model of the electro-rheological fluid engine mounting system is set up, Combining the electro-rheological fluid effect with hydraulic mount technology and considering the flexibility of the car frame. The simulation model of electro-rheological fluid engine mounting system is build up by the Simulink module of Matlab software to simulate the representative situations of the system, and the displacement and acceleration characteristic curves of the powerplant and the car frame is received. The simulation results indicate that the vibration isolation capability of the system with electric field is better than the one without electric field.

Computer Simulation of a Test Rig to Model Sloshing in Spin-Stabilized Satellites

1992 ◽  
Vol 114 (4) ◽  
pp. 689-698 ◽  
Author(s):  
D. R. Flugrad ◽  
L. A. Obermaier
Keyword(s):  
Model Simulation ◽  
Test Rig ◽  
Dynamic Motion ◽  
Experimental Project ◽  
Rotating Structure ◽  
Simulation Results ◽  
Parameter Values ◽  
The Mathematical Model ◽  
Two Degree Of Freedom ◽  
Good Agreement

Certain communications satellites carry liquid stores on board for station tending and attitude adjustment. However, sloshing of the liquid can cause an undesirable nutational motion of the spin-stabilized vehicle. In previous work a test rig was designed, built and instrumented to study the interaction between the rotating structure and liquid. To augment that experimental project, a computer model of the test rig has been developed to simulate the dynamic motion of the system for various parameter values. The sloshing liquid was replaced by a two degree-of-freedom pendulum in the mathematical model. Simulation results were compared with those from a general multibody dynamics program and with experimental measurements of the test rig motion to demonstrate the mathematical model’s validity. Good agreement was achieved in both instances.

Dynamic Analysis Helicopter Flight Simulator

2014 ◽  
Vol 543-547 ◽  
pp. 1305-1308
Author(s):  
Xiao Feng Liu ◽  
Jing Wei Yu ◽  
Hai Tao Wang ◽  
Zhao Wen Fang
Keyword(s):  
Kinetic Model ◽  
Dynamic Analysis ◽  
Simulation Analysis ◽  
Structural Characteristics ◽  
Reference Value ◽  
Simulation System ◽  
Flight Simulator ◽  
Dynamics Model ◽  
Helicopter Flight ◽  
Simulation Results

For helicopter structural characteristics, this article focuses on the helicopter to take off, hover and other state aerodynamic analysis, the establishment of the fuselage-landing gear dynamics model; while the helicopter simulator simulation system are described, and the kinetic model was built simulation analysis, simulation results and the actual flight conditions consistent, indicating that the model is correct, there is a certain reference value.

Study on Hydraulic Energy-Recovering Workover Rig and the Simulation for Lifting the Pipestring

2006 ◽  
Vol 129 (2) ◽  
pp. 96-101 ◽  
Author(s):  
Zhang Lujun
Keyword(s):  
Mathematical Model ◽  
Potential Energy ◽  
Energy Saving ◽  
Simulation Analysis ◽  
Actual Measurement ◽  
Measurement Results ◽  
Vessel Volume ◽  
Simulation Results ◽  
The Mathematical Model ◽  
Special Working

In this paper, an advanced energy-saving petroleum machinery, the hydraulic energy-recovering workover rig, is researched. The equipped power of this rig is only one third of an ordinary rig, and this rig can also recover and reuse the potential energy which is released by the pipestring when lowered. The special working theory of this rig is introduced. An energy-saving analysis is conducted. Analysis shows that when lowering the pipestring which weighs 260kN, the energy recovered by this rig is about 240×106J. The mathematical model of lifting the pipestring is established and a simulation analysis is conducted. Through simulation, some conclusions are obtained: (1) the lighter the pipestring the shorter the pipestring lifting time; (2) the smaller the throttle valve path area the longer the pipestring lifting time; (3) the smaller the air vessel volume the shorter the pipestring lifting time. The actual measurement results prove that the simulation results are right.

Experimental and Simulation Results of a Cam and a Flat-Faced Follower Mechanism

2017 ◽  
Vol 12 (6) ◽  
Author(s):  
Louay S. Yousuf ◽  
Dan B. Marghitu
Keyword(s):  
Lyapunov Exponent ◽  
High Resolution ◽  
Angular Velocity ◽  
Dynamic Analysis ◽  
Simulation Analysis ◽  
Experimental Procedure ◽  
Velocity Impact ◽  
Contact Points ◽  
Simulation Results ◽  
Optical Markers

In this study, a cam and a flat-faced follower system with impacts and friction at the contact points are analyzed. The dynamic analysis has been done by simulating the follower displacement at a uniform cam angular velocity. Impact and friction are considered to determine the Lyapunov exponent based on different follower guides' clearances and cam rotational speeds. The simulation analysis has been carried out using solidworks. An experimental procedure is developed to capture the follower position through high-resolution optical markers mounted on the moving link. The experimental results are compared with the simulation results.

A Study of Simulation Model of Doubly-Fed Motor Based on Matlab/Simulink

2013 ◽  
Vol 816-817 ◽  
pp. 625-628
Author(s):  
Xian Biao Chen
Keyword(s):  
Simulation Model ◽  
Model Simulation ◽  
Regulation System ◽  
Motor Simulation ◽  
Unity Power Factor ◽  
Two Phase ◽  
Speed Regulation ◽  
Simulation Results ◽  
Doubly Fed ◽  
The Mathematical Model

This paper introduces the characteristics of doubly-fed motor. The mathematical model in the two-phase synchronous rotating coordinate system d-q of doubly-fed motor is given, and a simulation model is constructed by Matlab S-function based on the model. Simulation of doubly-fed motor on stator unity power factor vector control is carried out through the model and simulating waveforms are given. The simulation results illustrate that the doubly-fed motor simulation model by S-function has the characteristics of simple, fast and high precision. It provides a convenient pathway for the research of doubly-fed speed regulation system.

scholarly journals Experimental Verification of Model Simulation Results of Heating Cycles within the Electric Muffle Furnaces

2020 ◽  
Vol 5 (2) ◽  
pp. 36-46
Author(s):  
Jiří Lucák
Keyword(s):  
Mathematical Model ◽  
Silicon Carbide ◽  
Thermal Insulation ◽  
Experimental Verification ◽  
Model Simulation ◽  
Heating Furnace ◽  
Font Size ◽  
Muffle Furnace ◽  
Simulation Results ◽  
The Mathematical Model

<p><span style="font-family: Times New Roman; font-size: small;">The paper [1] described a mathematical model of the electric muffle furnace. A specific solution of real models has been already solved and presented within this paper. The first one is the muffle heating furnace equipped with a fireproof clay muffle (MODEL I) and thermal insulation of expanded fireproof clay. As the second variant the furnace equipped with a silicon carbide muffle (MODEL II) and with a thermal insulation of fibre ceramic boards of Sibral type is presented. Further the paper presents the results of simulations of the same heating cycles performed using the mathematical model presented in the paper [1] and comparing these results with the progression of the values measured in real furnaces.</span></p><p><span style="font-family: Times New Roman; font-size: small;">Experiment and simulation assessment will be carried out as the final step hereof. Equipment parameters are sources from technical documentations of the manufacturers.</span></p>

Simulation Analysis on Hydrostatic Transmission Based on the MATLAB/SIMULINK

2014 ◽  
Vol 1037 ◽  
pp. 212-215
Author(s):  
Zhen Zhu ◽  
Xiang Gao ◽  
Dao Yuan Pan ◽  
Yu Zhu
Keyword(s):  
Mathematical Model ◽  
Absolute Stability ◽  
Simulation Analysis ◽  
Response Characteristic ◽  
Driving Mechanism ◽  
Hydrostatic Transmission ◽  
Simulation Results ◽  
Relationship Of ◽  
The Mathematical Model ◽  
Characteristic Relationship

This paper explains the basic principle of hydrostatic transmission. The mathematical model of proportional driving mechanism and pump control motor mechanism has been established. According to the simulation results, the response characteristic relationship of system can be obtained,and analyses the controllability,the observability, the absolute stability and relative stability of the system,in order to illustrate the system is in conformity with the requirements of design.

scholarly journals Structural Design and Dynamics Simulation Analysis of A Certain Type of Co-frame Launcher

2021 ◽  
Vol 2125 (1) ◽  
pp. 012037
Author(s):  
Hanchao Liu ◽  
Anxin Guo ◽  
Xuezhi Wang
Keyword(s):  
Dynamic Response ◽  
3D Modeling ◽  
Structural Design ◽  
Simulation Analysis ◽  
Dynamics Simulation ◽  
Dynamic Parameters ◽  
Dynamics Model ◽  
Modeling Software ◽  
Design Requirements ◽  
Simulation Results

Abstract To study the dynamic response of a certain type of co-frame launcher during launch, this article uses the 3D modeling software Pro/E to import the model into Adams from the perspective of launch dynamics. the launch dynamics model of the shared-frame launcher is established. We apply the ejection thrust of the two types of missiles to the corresponding ejection devices and measure and collect the dynamic parameters of the cartridge system. The simulation results show that the dynamic parameters of the A and B missiles are in line with the available overload design requirements. The B-type missiles are superior to the A-type missiles in terms of ballistic orbit contact force and ejection attitude.

scholarly journals Dynamic Modeling and Analysis of the Telescopic Sleeve Antiswing Device for Shipboard Cranes

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Jianli Wang ◽  
Shenghai Wang ◽  
Haiquan Chen ◽  
Anqi Niu ◽  
Guoliang Jin
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Dynamic Characteristics ◽  
Structural Design ◽  
Three Dimensional ◽  
Modeling And Analysis ◽  
Research Results ◽  
Simulation Results ◽  
Reduction Characteristics

In order to explore the dynamic characteristics of the telescopic sleeve antiswing device for shipboard cranes under coupling excitation, a three-dimensional dynamic model of the ship crane telescopic sleeve antiswing device is established in this study, and the accuracy of the model is verified through experiments. By dynamic analysis, the influence of sleeve extension and contraction, damper parameters, and ship excitation on the payload swing is found; meanwhile, the influence of payload swing on ship stability is discovered. At the same time, the simulation results show that the three-dimensional dynamic model can accurately simulate the swing reduction characteristics of the antiswing device. The in-plane and out-plane angles of the swing are reduced by 70% and 90%. The research results have great significance to further explore the antiswing mechanism and structural design of the mechanical antiswing device.

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