scholarly journals Dynamic Simulation Analysis and Optimization of Firing Rate of Rocket Launchers on Wheeled Vehicles

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Vo Van Bien ◽  
◽  
Martin Macko ◽  
Nguyen Thai Dung ◽  
Nguyen Duy Phon ◽  
...  
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Dynamic Simulation ◽  
Design Process ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Dynamic Parameters ◽  
Wheeled Vehicle ◽  
Calculation Results ◽  
Wheeled Vehicles

The paper presents a method of determining the dynamic parameters of multiple-rocket-launcher system mounted on the wheeled vehicle based on Newton's law of motion. The dynamic simulation was conducted and then the results were compared with the corre-sponding experimental data to verify the reliability of the model. The model was ap-plied in calculation and tested out on multiple-rocket-launcher system B?-21 (of Rus-sia). The theoretical model calculation results are relatively consistent with the meas-ured experimental data. The dependence of the launcher oscillation on the rate of fire was investigated, which determined the optimal rate of fire for each launcher. These results are used to evaluate the firing stability of the launcher when firing individual shots and firing bursts. This is an important theoretical basis which can be a reference for designers in the design process of improvement, manufacture, exploitation and use of a launcher mounted on the wheeled vehicle.

Research on Dynamic Alignment for Sophisticated System Based on ACP Technology

2012 ◽  
Vol 630 ◽  
pp. 473-478 ◽  
Author(s):  
Fei Wan ◽  
Guo Xi Li ◽  
Jing Zhong Gong ◽  
Bao Zhong Wu
Keyword(s):  
Experimental Data ◽  
Dynamic Simulation ◽  
Process Parameters ◽  
Simulation Software ◽  
Contact Theory ◽  
Dynamic Parameters ◽  
Agent Model ◽  
The Status ◽  
Alignment Process ◽  
Dynamic Alignment

To change the status of time-consuming and over-reliance on technicians in mechanical system alignment process, the ACP technology is presented. The mapping between alignment process parameters and dynamic parameters was established through contact theory to build the agent model for parts. While the second mapping between dynamic parameters and machine dynamic characteristics is calculated by dynamic simulation software to conduct computational experiments. Experimental data is analyzed in order to implement data mine, optimize the alignment process, guide technician alignment, modify the theory mapping and improve the alignment efficiency.

scholarly journals Dynamics of Short Recoil-Operated Weapon

2021 ◽  
Vol 12 (3) ◽  
pp. 9-26
Author(s):  
Martin MACKO ◽  
Bien Van VO ◽  
Quang Anh MAI
Keyword(s):  
Experimental Data ◽  
Dynamic Simulation ◽  
Theoretical Basis ◽  
Structural Parameters ◽  
Burst Firing ◽  
Math Model ◽  
Firing System

In this article, the authors mentioned the function of short-recoil-operated weapons with a vertical sliding-wedge breechblock. The dynamic simulation was conducted and then the results were compared with the corresponding experimental data to verify reliability of the model. The model is calculated and tested out on the 37 mm twin anti-aircraft gun. Besides, the article presents the effect of some structural parameters on functionality of the automatic weapon. The reported results are an important theoretical basis to determine the rate of fire and the forces acting on the guns. The movement of the breechblock also affects stability of the weapon and can therefore be used to a math model or to simulate the movement of the weapon. Calculated and verified data could be used for the design of an automatic firing system as well as for solving vibration on automatic guns when burst firing.

A new methodology to optimize a race car for inertial sports

2019 ◽  
Vol 233 (2) ◽  
pp. 312-323 ◽  
Author(s):  
Daniel Allonca ◽  
Daniel A Mantaras ◽  
Pablo Luque ◽  
Marta Alonso
Keyword(s):  
Design Process ◽  
Significant Influence ◽  
Aerodynamic Drag ◽  
Rolling Resistance ◽  
Inertial Forces ◽  
Vehicle Performance ◽  
Race Car ◽  
Gravitational Forces ◽  
Wheeled Vehicle ◽  
Wheeled Vehicles

In sports competitions with wheeled vehicles, the resistances to movement that most affect vehicle performance are aerodynamic drag, rolling resistance, inertial forces and gravitational forces. When a powerful engine is available, the rolling resistance is negligible but, in competitions where the vehicle has a low-power engine or lack of it, the rolling resistance has a significant influence on the vehicle performance. The resistance to advance in curve due to the steer angle (curve resistance) is not taken into account during the design process. However, as noted in other research for this type of vehicle, the curve resistance cannot be neglected. Therefore, this article develops a methodology to optimize the vehicle cornering behavior of non-motored vehicles intended for inertial sports, which can be applied to any type of wheeled vehicle. The target of the vehicle optimization is to maximize its cornering speed, while its resistance to movement is reduced. As will be shown, both factors are related and opposed to each other.

Simulation of the Discharging Process Throughout a Porous Medium Initially Saturated With Fluid

2003 ◽  
Author(s):  
G. J. Carbajal ◽  
J. E. Gonza´lez ◽  
R. Diaz
Keyword(s):  
Experimental Data ◽  
Surface Tension ◽  
Porous Medium ◽  
Theoretical Model ◽  
Pressure Drop ◽  
Simulation Analysis ◽  
Data Sets ◽  
Model And Simulation ◽  
Linear Behavior ◽  
Numerical Formulation

This paper presents the development of a theoretical model and simulation analysis for the discharging process that takes place in a porous medium initially saturated with ink. During the discharging process the porous material provides enough surface area to hold the fluid by capillarity effects. It was found by the numerical solution that the velocity profile through the porous region was uniform and the backpressure had a linear behavior as function of time. A parametric study also revealed that the permeability, void volume and surface tension have a significant effect on the pressure drop. The numerical formulation was validated with experimental data and good agreements were found between both data sets.

scholarly journals Dynamic Simulation Analysis of Track Tension and the Influencing Factors of Deep-Sea Tracked Mining Vehicle

2022 ◽  
Vol 2022 ◽  
pp. 1-10
Author(s):  
Fan Beibei ◽  
Liao Naixing
Keyword(s):  
Influencing Factors ◽  
Dynamic Simulation ◽  
Deep Sea ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Theoretical Estimation ◽  
Dynamics Model ◽  
Tracked Vehicles ◽  
Estimation Formula ◽  
Multibody Dynamics Model

The deep-sea mining miner requires good passability to operate in complex and changeable terrain environment of the seabed. Among them, the track tension is an important factor to ensure the normal running of the vehicle. Aiming at the complex track tension problem on track link, the forces on each component of the tracked system were analyzed, and the theoretical formulas of track tension were established. The theoretical estimation and dynamic simulation of track tension in uniform speed were carried out by using the multibody dynamics model of the tracked vehicle, and the rationality of the theoretical estimation formula was verified. The influencing factors of track tension also were analyzed, and the significance of each factor on track was discussed by dynamic simulation. The results provided a theoretical basis for design of tracked vehicles.

Dynamic Simulation Analysis of Gatling Gun Based on Virtual Proto Model

2012 ◽  
Vol 479-481 ◽  
pp. 748-751
Author(s):  
Tao Li ◽  
Rui Lin Wang ◽  
Lin Hua Liu
Keyword(s):  
Experimental Data ◽  
Structural Optimization ◽  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Angular Displacement ◽  
Virtual Prototype ◽  
Rigid Bodies ◽  
Displacement Velocity ◽  
Structure Parameters ◽  
Solid Works

Description of the dynamic characters of the main parts of pistol is necessary. On the basis of analyzing the motions and forces of every part of some Gatling gun, a 63-degree-of-freedom virtual prototype composed by 101 rigid bodies is established by means of Solid Works and ADAMS. The validation is made and the credibility of the virtual prototype is approved by compared to the simulation result and the experimental data of the barrel Angular displacement, velocity and displacement of bolt frame. The dynamic simulation analysis of automata is produced. Moreover, the influence of some structure parameters on the dynamic characters of the main parts is studied by simulation, which has laid the foundation for further simulation and structural optimization

Dynamic Simulation Analysis of Belt Rupture for Belt Conveyor

2013 ◽  
Vol 313-314 ◽  
pp. 1120-1124 ◽  
Author(s):  
Hong Wei Ma ◽  
Dong Sheng Li ◽  
Xu Hui Zhang ◽  
Qing Hua Mao
Keyword(s):  
Finite Element ◽  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Break Point ◽  
Simulation System ◽  
Belt Conveyor ◽  
Simulation Parameters

To study the dynamic characteristics of belt conveyor during belt rupture, the finite element dynamic model of belt conveyor was built. Dynamic simulation system of DTII type belt conveyor was established with AMESim. The simulation parameters were determined by DTII type belt conveyor design manual and the dynamic model. The speed, displacement of break point and mechanic characteristic carve in break moment were obtained. According to the result, the optimal capture time was confirmed.It provides the theoretical basis for the design of belt rupture equipment.

Three-Dimensional Finite Simulation Analysis of Forepoling Bolt Pre-Supporting at Tunnel Entrance

2013 ◽  
Vol 838-841 ◽  
pp. 467-471
Author(s):  
Yong Duan ◽  
Bao Qun Wang ◽  
Jian Guo Zhang
Keyword(s):  
Axial Force ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Side Wall ◽  
Surrounding Rock ◽  
Geological Condition ◽  
Calculation Results ◽  
Primary Support ◽  
Tunnel Entrance

In order to ensure construction safety of tunnel entrance under complicated geological condition, surrounding rock should be pre-supported. Forepoling bolt pre-supporting has been adopted in the paper and three-dimensional finite numerical simulation has been used to analyze its effect. Calculation results show that vault displacement is less than 50mm, displacement of side wall is no more than 45mm and the final safety factor fo primary support is about 5.0. So forepoling bolt pre-supporting could ensure safety of supporting structure at tunnel entrance. Meanwhile, maximum axial force of forepoling bolt is higher than 13kN appreciably. And axial force along the bolt shows step-like. Maximum is located in middle of forepoling bolt and it derecases to two ends gradually. Alao axial force of forepoling bolt in vault is larger than side wall. These conclusions coulde provide theoretical basis for safety construction of tunnel entrance.

Refined thermal calculation of the locomotive heat engine collector

2020 ◽  
pp. 56-58
Author(s):  
P.V. Gubarev ◽  
D.V. Glazunov ◽  
V.G. Ruban ◽  
A.S. Shapshal
Keyword(s):  
Experimental Data ◽  
Electric Motor ◽  
Heat Balance ◽  
Thermal Imaging ◽  
Heat Engine ◽  
Thermal Calculation ◽  
Calculation Results ◽  
Cooling Air ◽  
The Heat Balance ◽  
Traction Electric Motor

The thermal calculation of the locomotive traction engine collector is proposed. The equations of the heat balance of its elements are obtained taking into account the cooling air. The calculation results and experimental data of thermal imaging control are presented. Keywords: traction electric motor, collector, thermal calculation, thermal imaging control. [email protected]

Dynamic Analysis of DVG 850 High-Speed Machining Center

2012 ◽  
Vol 487 ◽  
pp. 203-207
Author(s):  
Gong Xue Zhang ◽  
Xiao Kai Shen
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
Response Analysis ◽  
Improved Method ◽  
Analysis Software ◽  
Element Analysis ◽  
Harmonic Response ◽  
Machining Center ◽  
Calculation Results ◽  
Harmonic Response Analysis

Purpose, with the application of workbench finite element analysis software, get the analysis results of DVG 850 high-speed vertical machining center via the modal analysis and harmonic response analysis. Use the calculation results for reference, put forward the improved method, and prove the credibility of the simulation analysis by testing DVG 850 prototype.

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