A Force System Synthesis Algorithm for Use as a Companion to Mechanism Dynamic Analysis Programs

1983 ◽  
Vol 105 (2) ◽  
pp. 273-277 ◽  
Author(s):  
W. L. Carson ◽  
C.-S. I. Lee
Keyword(s):  
Computer Program ◽  
Dynamic Analysis ◽  
Host Computer ◽  
Synthesis Process ◽  
Force System ◽  
Synthesis Algorithm ◽  
System Synthesis ◽  
Planar Mechanism ◽  
Interactive Graphic

The set of equations and algorithm described in this paper can be used to develop force system synthesis programs which utilize existing mechanism dynamic analysis programs as a host. The algorithm can be used for any planar mechanism. Also it can be used on smart microprocessor-based interactive graphic terminals since it does not require having to reaccess the host computer program during the force system synthesis process.

Formulation of Multiple Belt System and its Dynamic Analysis

1993 ◽  
Author(s):  
Takuzo Iwatsubo ◽  
Shiro Arii ◽  
Kei Hasegawa ◽  
Koki Shiohata
Keyword(s):  
Computer Program ◽  
Dynamic Analysis ◽  
Dynamic Characteristics ◽  
Equations Of Motion ◽  
Linear Equations ◽  
Transient Responses ◽  
Fundamental Idea ◽  
Linear Equations Of Motion ◽  
Simulation Results ◽  
Belt System

Abstract This paper presents a method for analyzing the dynamic characteristics of driving systems consisting of multiple belts and pulleys. First, the algorithm which derives the linear equations of motion of arbitrary multi-coupled belt systems is shown. Secondly, by using the algorithm, the computer program which formulates the equations of motion and calculates the transient responses of the belt system is presented. The fundamental idea of the algorithm is as follows: Complicated belt systems consisting of multiple belts and pulleys are regarded as combinations of simple belt systems consisting of a single belt and some pulleys. Therefore, the equations of motion of the belt systems can be derived by the superposition of the equations of motion of the simple belt systems. By means of this method, the responses of arbitrary multi-coupled belt systems can be calculated. Finally, to verify the usefulness of this method, the simulation results are compared with the experimental results.

Type Synthesis of Baranov Truss With Multiple Joints and Multiple-Joint Links

1998 ◽  
Author(s):  
Jinkui Chu ◽  
Weiqing Cao ◽  
Tingli Yang
Keyword(s):  
Computer Program ◽  
Synthesis Process ◽  
Type Synthesis ◽  
Program System ◽  
Structural Synthesis ◽  
Open Chain ◽  
Synthesis Of Mechanisms

Abstract The method called Single-Open-Chain (SOC) proposed in the literature is a very effective one for structural synthesis of mechanisms; in particular the method suits the synthesis process with the computer. In this paper, a new representation for mechanisms, called Double-Color-Graph (DCG) is introduced. Application of the SOC concept with the help of DCG representation, a new procedure for type synthesis for multiple joints and multiple-joint links, is presented. Baranov Trusses are extensively studied, which results in the finding of 158 independent types of Baranov Trusses with the number of loops being (1–4). A computer program system has been developed to generate all these types.

Dynamic Buckling of Shallow Spherical Shells

1973 ◽  
Vol 40 (2) ◽  
pp. 411-416 ◽  
Author(s):  
R. E. Ball ◽  
J. A. Burt
Keyword(s):  
Computer Program ◽  
Dynamic Analysis ◽  
Digital Computer ◽  
Large Range ◽  
Dynamic Buckling ◽  
Geometrically Nonlinear ◽  
Shells Of Revolution ◽  
Spherical Shells ◽  
Static And Dynamic Analysis ◽  
Nonlinear Static

The dynamic behavior of clamped shallow spherical shells subjected to axisymmetric and nearly axisymmetric step-pressure loads is examined using a digital computer program for the geometrically nonlinear static and dynamic analysis of arbitrarily loaded shells of revolution. A criterion for dynamic buckling under the nearly axisymmetric load is proposed and critical buckling pressures are determined for a large range of shell sizes.

Dynamic Analysis of Minimally Lubricated Ball Bearings for Space Applications

2008 ◽  
Author(s):  
T. Nogi ◽  
K. Maniwa ◽  
S. Obara
Keyword(s):  
Computer Program ◽  
Dynamic Analysis ◽  
Mixed Lubrication ◽  
Ball Bearings ◽  
Reaction Wheel ◽  
Space Applications ◽  
Ball Contact

A computer program for dynamic analysis of ball bearings, in which a simple mixed lubrication model for the retainer/race and retainer/ball contact is incorporated, is developed and retainer instability in reaction wheel bearings is investigated. Results show that an increase in the amount of oil promotes the instability and that a retainer with rectangular pockets is more stable than one with circular pockets.

Elastodynamic Inversion of Multilayered Media via Surface Waves—Part II: Implementation and Numerical Verification

2011 ◽  
Vol 78 (4) ◽  
Author(s):  
Feiquan Luo ◽  
Lu Sun ◽  
Wenjun Gu
Keyword(s):  
Computer Program ◽  
Dynamic Analysis ◽  
Numerical Algorithms ◽  
Numerical Verification ◽  
Falling Weight Deflectometer ◽  
Multilayered Media ◽  
Estimated Parameters ◽  
Multilayered Medium ◽  
Analysis Computer ◽  
Falling Weight

An effective inverse analysis computer program that integrates nonlinear optimization algorithm and forward dynamic analysis of multilayered medium is developed for inferring structural and material properties (e.g., modulus, thickness, and the number of layers) of the medium. Using dynamic deflection information obtained from forward dynamic analysis of the multilayered medium as a hypothetical deflection measured from the field during pavement nondestructive evaluation (NDE) using falling weight deflectometer, the estimated parameters of the medium are compared with the known true parameters of the medium used to perform the static and forward dynamic analyses. Based on two different multilayered media, a number of important observations and conclusions are made regarding the accuracy and efficiency of the proposed numerical algorithms and developed computer program. The inversion methods presented in this paper show improved NDE results over many of the existing algorithms.

Kinematic and Dynamic Analysis of Planar Mechanisms by Means of the Cosmos Motion Program

2015 ◽  
Vol 816 ◽  
pp. 31-34
Author(s):  
Ján Vavro ◽  
Ján Vavro ◽  
Petra Kováčiková ◽  
Radka Bezdedová
Keyword(s):  
Dynamic Analysis ◽  
Planar Mechanisms ◽  
Planar Mechanism ◽  
Graphic Dependence ◽  
Angle Of Rotation

The paper presents a kinematic and dynamic analysis of a planar mechanism by means of the Cosmos Motion 2.85 program. Graphic dependence of kinematic and dynamic magnitudes of some points is given in dependence on the angle of rotation of the driving item and on the time.

scholarly journals Performance Investigation of Antivirus - A Comparative Analysis

2017 ◽  
Vol 10 (1) ◽  
pp. 201-206
Author(s):  
Remya Thomas ◽  
M Nachamai
Keyword(s):  
Comparative Analysis ◽  
Computer Program ◽  
Private Information ◽  
Hard Disk ◽  
Host Computer ◽  
Malicious Software ◽  
Open Network ◽  
Cpu Time ◽  
Full Scan ◽  
Better Than

Antivirus as name implies prevent the devices such as computers, mobiles and pen-drive from viruses. All gadgets which interact with open network are prone to virus. Virus is a malicious software program which replicates by copying its code multiple times or by infecting any computer program (like modifying the existing program) which can affect its process. Virus perform harmful task on affected host computer such as possessing on hard disk, CPU time, accessing private information etc. This paper specifies the performance of (McAFee, Avast, Avira, Bitdefender, Norton) antivirus and its effectiveness on the computer. The performance is tested based on the time acquired by each antivirus to act on a computer. The parameters used to analyze the performance are quick scan, full scan and custom scan with respect to time. Through the analysis Bitdefender performance is better than other selected antivirus.

The Dynamics Analysis on a Type Palletizing Robot

2012 ◽  
Vol 157-158 ◽  
pp. 982-986 ◽  
Author(s):  
Mei Yu Lv ◽  
Jin Quan Li ◽  
Bing Lei Duan ◽  
Rong Fu
Keyword(s):  
Mathematical Model ◽  
Dynamic Analysis ◽  
Inertial Force ◽  
Parameter Variation ◽  
Kinetic Control ◽  
Dynamics Analysis ◽  
Static System ◽  
Force System

For a palletizing robot, based on analysis of structural and force,taking the theory of D'Alembert to transform the instantaneous inertial force system into a static system and the Kineto-static mathematical model for the robots is established through the method of Kineto-static. At last, via solving the Kineto-static mathematical model by use of the Matlab，the model is verified by calculating and analysing an example. This model is applicable to dynamic analysis on the robots with similar configuration and the results based on the parameter variation is also applicable to this kind of robot’s design, checking, and kinetic control.

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