Design and Analysis of One Kind of Preliminary Storage Centrifugal Action Mechanism Applied to Submunition Fuze

2013 ◽  
Vol 718-720 ◽  
pp. 1624-1629
Author(s):  
Sheng Gang Xu ◽  
Yan Xuan Wu ◽  
Ning Jun Fan ◽  
Dong Qing Cheng ◽  
Dong Ze Qin
Keyword(s):  
Dynamic Simulation ◽  
Working Environment ◽  
Action Mechanism ◽  
Working Process ◽  
Development Status ◽  
Mechanical Structure ◽  
Simulation Results ◽  
And Function ◽  
Centrifugal Action

According to the requirement of the U.N. for the rate and function of dud, this paper proposes a project to improve mechanical structure of original submunition combing with the development status of submunition in China. With the characteristics of submunition fuzes structure and working environment, one kind of preliminary storage centrifugal action mechanism is designed in the paper. The principle and process of action are also elaborated. The paper makes calculation of reliability and does dynamic simulation by stages according to working process of submunition. Calculation and simulation results demonstrate that preliminary storage centrifugal action mechanism can be reliable and achieves the aim of design.

Design and Dynamic Simulation of a Novel Piano Action Mechanism

2008 ◽  
Author(s):  
Carl A. Nelson
Keyword(s):  
Dynamic Simulation ◽  
Simulation Software ◽  
Action Mechanism ◽  
Rapid Succession ◽  
Simulation Results ◽  
Standard Action ◽  
Grand Piano

A novel piano action mechanism is presented, which is based on a multi-lobed lifting cam. The cam replaces several bodies in the standard action mechanism and allows the upright piano to achieve fast repetition of a single note, which is a quality more commonly attributed to grand piano actions. The use of simulation software to aid in tuning of the design is described, and the final simulation results are presented. These results indicate the ability of the new mechanism to achieve good performance over a range of playing intensities and to play repeated notes in rapid succession.

Dynamic Analysis and Simulation of Vertical High-Speed Feeding System Based on Direct-Drive Technology

2014 ◽  
Vol 490-491 ◽  
pp. 733-739
Author(s):  
Zheng Tuo Wang ◽  
Zhen Li Feng ◽  
Shao Meng Chen ◽  
Yue Tong Xu
Keyword(s):  
Dynamic Analysis ◽  
Sheet Metal ◽  
Dynamic Simulation ◽  
High Speed ◽  
Dynamic Equations ◽  
Feeding System ◽  
Direct Drive ◽  
Development Potential ◽  
Mechanical Structure ◽  
Simulation Results

Vertical high-speed feeding system which based on direct-drive technology possesses unique advantages, and has broad development potential. This paper describes the mechanical structure and working processes of vertical high-speed feeding system, analyzes the punching force and deformation of sheet metal, then establishes the dynamic equations, and finally conducts a dynamic simulation of punching stage and returning stage. And the simulation results in line with expectations.

Speed regulation control of tractors’ new dual-flow transmission system based on slip rate resistance classification

2021 ◽  
pp. 095440702110105
Author(s):  
Guang Xia ◽  
Yan Xia ◽  
Xiwen Tang ◽  
Linfeng Zhao ◽  
Baoqun Sun
Keyword(s):  
Control Strategy ◽  
Control Algorithm ◽  
Production Efficiency ◽  
Sliding Mode ◽  
Slip Rate ◽  
Speed Control ◽  
Working Environment ◽  
Vehicle Speed ◽  
Speed Change ◽  
Simulation Results

Fluctuations in operation resistance during the operating process lead to reduced efficiency in tractor production. To address this problem, the project team independently developed and designed a new type of hydraulic mechanical continuously variable transmission (HMCVT). Based on introducing the mechanical structure and transmission principle of the HMCVT system, the priority of slip rate control and vehicle speed control is determined by classifying the slip rate. In the process of vehicle speed control, the driving mode of HMCVT system suitable for the current resistance state is determined by classifying the operation resistance. The speed change rule under HMT and HST modes is formulated with the goal of the highest production efficiency, and the displacement ratio adjustment surfaces under HMT and HST modes are determined. A sliding mode control algorithm based on feedforward compensation is proposed to address the problem that the oil pressure fluctuation has influences on the adjustment accuracy of hydraulic pump displacement. The simulation results of Simulink show that this algorithm can not only accurately follow the expected signal changes, but has better tracking stability than traditional PID control algorithm. The HMCVT system and speed control strategy models were built, and simulation results show that the speed control strategy can restrict the slip rate of driving wheels within the allowable range when load or road conditions change. When the tractor speed is lower than the lower limit of the high-efficiency speed range, the speed change law formulated in this paper can improve the tractor speed faster than the traditional rule, and effectively ensure the production efficiency. The research results are of great significance for improving tractor’s adaptability to complex and changeable working environment and promoting agricultural production efficiency.

Inverse Kinematic Solution and Dynamic Model to 3PTT Parallel Mechanism

2014 ◽  
Vol 945-949 ◽  
pp. 1421-1425
Author(s):  
Xiu Qing Hao
Keyword(s):  
Dynamic Model ◽  
Dynamic Simulation ◽  
Parallel Mechanism ◽  
Inverse Kinematic ◽  
Euler Method ◽  
Research Subject ◽  
Adams Software ◽  
Inverse Kinematic Analysis ◽  
Simulation Results ◽  
Kinematic Solution

Take typical parallel mechanism 3PTT as research subject, its inverse kinematic analysis solution was gotten. Dynamic model of the mechanism was established by Newton-Euler method, and the force and torque equations were derived. Dynamic simulation of 3PTT parallel mechanism was done by using ADAMS software, and simulation results have verified the correctness of the theoretical conclusions.

Dynamic Simulation Analysis of the Crane Hoisting Process Based on Adams

2014 ◽  
Vol 940 ◽  
pp. 132-135 ◽  
Author(s):  
Yi Fan Zhao ◽  
Ling Sha ◽  
Yi Zhu
Keyword(s):  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Wire Rope ◽  
Dynamics Simulation ◽  
Dimensional Model ◽  
Analysis Model ◽  
Three Dimensional Model ◽  
Adams Software ◽  
Simulation Results

Established the dynamics simulation analysis model of crane hoisting mechanism based on the theory of dynamics in Adams software, and then through the three dimensional model of lifting mechanism dynamics entities, the constraints, load, drive can be added, the motion law can be defined to simulation analysis the change of the force of wire rope, the change of displacement, velocity and acceleration of lifting weight in the lifting process. On the basis of the simulation results, it can make a great improvement for the structure of crane and provide a meaningful theoretical reference for the hoisting machinery innovation design.

CEPC Linac design

2019 ◽  
Vol 34 (13n14) ◽  
pp. 1940005 ◽  
Author(s):  
Cai Meng ◽  
Jingru Zhang ◽  
Xiaoping Li ◽  
Guoxi Pei ◽  
Dou Wang ◽  
...  
Keyword(s):  
Dynamic Simulation ◽  
Repetition Frequency ◽  
Positron Source ◽  
Electron Positron ◽  
Transport Line ◽  
Simulation Results ◽  
Positron Beams

The Circular Electron–Positron Collider (CEPC) is a 100-km ring [Formula: see text] collider for a Higgs factory. The injector of CEPC is composed of Linac and Booster. The Linac is a normal conducting S-band Linac with a frequency of 2860 MHz; it provides electron and positron beams at an energy of up to 10 GeV with 100 Hz repetition frequency of 100 Hz. The Linac design and dynamic simulation results are discussed in detail in this paper, including electron bunching system, positron source, electron bypass transport line, damping ring and main Linacs.

scholarly journals Comparative analysis of selected glass systems by dynamic simulation using measured real environmental conditions

2020 ◽  
Vol 172 ◽  
pp. 19009
Author(s):  
Silvia Bizoňová ◽  
Dušan Katunský ◽  
Miloslav Bagoňa
Keyword(s):  
Dynamic Simulation ◽  
Energy Savings ◽  
Building Envelope ◽  
Heat Losses ◽  
Experimental Glass ◽  
Existing Structures ◽  
Spectrally Selective ◽  
The Subject ◽  
Simulation Results ◽  
Made In

The subject of the study presents the measurement of temperatures on surfaces of glass systems of existing structures and the surfaces of experimental glass systems obtained by dynamic simulation. Measurements were made in the test cells of the Faculty of Civil Engineering of the Technical University of Košice. The partial results of which are the basis for the comparison of the currently installed and experimentally designed glass systems using spectrally selective films. The proposed mathematical-physical model was simplified by replacing the sash, frame and its components with a homogenous element with minimal shape modifications, while this does not have a significant effect on the simulation results. The choice of the proposed glass system respects the need for reduction of solar gains in summer and heat losses in buildings in winter through the weakest part of the building envelope and indicates future energy savings in relation to cooling and heating costs with a view to optimizing light and thermal comfort.

Load Rejection Tests and Their Dynamic Simulations With a 150 kW Class Microsteam Turbine

2013 ◽  
Vol 135 (5) ◽  
Author(s):  
Susumu Nakano ◽  
Kuniyoshi Tsubouchi ◽  
Hiroyuki Shiraiwa ◽  
Kazutaka Hayashi ◽  
Hiroyuki Yamada
Keyword(s):  
Dynamic Simulation ◽  
Rotational Speed ◽  
Delay Time ◽  
Simulation Method ◽  
Dynamic Simulations ◽  
Machine Reliability ◽  
Delay Times ◽  
Simulation Results ◽  
Generator Output ◽  
Good Agreement

A simulation method for load rejection with a 150 kW class radial inflow steam turbine system was proposed to determine over rotational speed at load rejection. Simulations were carried out for several parameters of valves which are operated in an emergency. In addition, load rejection tests were carried out to confirm the machine reliability and to obtain results for comparison with the simulation results. Simulation results show that operation delay times of the steam release and vacuum break valves greatly affect over rotational speed at load rejection. Load rejection tests were done for generator outputs from 69 kW to 113 kW. Maximum over rotational speed of 54,160 rpm was measured at the generator output of 113 kW. Over rotational speed calculated by the dynamic simulation has relatively good agreement with the result for the operation delay time of 0.21 s. If the operation delay time of the steam release valves are kept as 0.21 s at the load rejection for the rated load of 150 kW, the over rotational speed is suppressed within 55,200 rpm which is less than the allowed rotational speed of 56,100 rpm.

Improvement of Dynamic Models of Photovoltaic Arrays

2013 ◽  
Vol 419 ◽  
pp. 761-767
Author(s):  
Ji Nan Quan ◽  
Guang Yu Zhou ◽  
Chun Yan Chen
Keyword(s):  
Ambient Temperature ◽  
Dynamic Simulation ◽  
Control Strategy ◽  
Dynamic Models ◽  
Photovoltaic Cell ◽  
Nonlinear Characteristic ◽  
Photovoltaic Array ◽  
Photovoltaic Arrays ◽  
Dynamic Simulation Model ◽  
Simulation Results

The nonlinear characteristic of photovoltaic cell following changes of irradiation and ambient temperature must be solved to research solar energy deeply and to utilize it high-efficiently. For building simple and practical dynamic simulation model and seeking after control strategy for raising out-power, a modified dynamic model of photovoltaic array is developed based on the physical model of photovoltaic cell, in which the voltage and current coefficients about ambient temperature and irradiation are introduced. By the model with stronger applicability and generality, the photovoltaic array I-V characteristic can be simulated arbitrarily with changes of irradiationambient temperaturephotovoltaic module parameter and its combination. The validity of the model is verified by all of the simulation results under Matlab/Simulink.

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