Quality Assurance in the Numerical Simulation of Mechanical Systems

2009 ◽  
pp. 51-69 ◽  
Author(s):  
B.A. Szabo
Keyword(s):  
Numerical Simulation ◽  
Quality Assurance ◽  
Mechanical Systems

scholarly journals Some Aspects Concerning The Impact Of The End Of Stroke On Hydraulic Cylinders

2015 ◽  
Vol 21 (3) ◽  
pp. 821-824
Author(s):  
Niculai Hauk
Keyword(s):  
Numerical Simulation ◽  
Mechanical Systems ◽  
Hydraulic Cylinder ◽  
Important Variable ◽  
Mechanical Impact ◽  
Hydraulic Cylinders ◽  
The Masses ◽  
The Impact ◽  
Simulation Systems ◽  
Classical Calculation

Abstract The increase of speeds for mechanical systems operated with hydraulic cylinder raises risks of mechanical impact of the end of the race. We are considering a number of measures to limit the impact intensity. Its size is estimated according to the masses in motion, to work pressures and to the geometry of the mechanism. Elasticity of the components is also an important variable. This paper presents a method which combines the classical calculation with numerical simulation systems.

scholarly journals Numerical simulation of finite dimensional multibody nonsmooth mechanical systems

2002 ◽  
Vol 55 (2) ◽  
pp. 107-150 ◽  
Author(s):  
B Brogliato ◽  
AA ten Dam ◽  
L Paoli ◽  
F Ge´not ◽  
M Abadie
Keyword(s):  
Differential Equation ◽  
Numerical Simulation ◽  
Ordinary Differential Equation ◽  
Mechanical Systems ◽  
Difficult Problem ◽  
Review Article ◽  
Differential Algebraic Equation ◽  
Complementarity Conditions ◽  
Finite Dimensional ◽  
Impact Phenomena

This review article focuses on the problems related to numerical simulation of finite dimensional nonsmooth multibody mechanical systems. The rigid body dynamical case is examined here. This class of systems involves complementarity conditions and impact phenomena, which make its study and numerical analysis a difficult problem that cannot be solved by relying on known Ordinary Differential Equation (ODE) or Differential Algebraic Equation (DAE) integrators only. The main techniques, mathematical tools, and existing algorithms are reviewed. The article utilizes 233 references.

Few Sampling Study on Whole-Life Design of Complex Electro-Mechanical System

2009 ◽  
Vol 628-629 ◽  
pp. 49-54
Author(s):  
B. Zhang ◽  
Jun Hua Chen ◽  
Ying Gao
Keyword(s):  
Numerical Simulation ◽  
Sustainable Development ◽  
Mechanical System ◽  
Production Line ◽  
High Reliability ◽  
Mechanical Systems ◽  
Research Strategies ◽  
The Sustainable Development ◽  
Sampling Systems ◽  
Life Design

The whole-life design of complex electro-mechanical systems is extremely significant which could satisfy the high reliability requirement of production line and reduce the accident caused by complicated equipments. In this paper, the whole-life of gear was taken as an example to indicate that the sustainable development of whole-life design must rely on the study of few sampling systems. Two research strategies of few sampling systems are proposed: numerical simulation and virtual prototype technology.

Simple Robust r − α Tracking Controllers for Uncertain Fully-Actuated Mechanical Systems

1997 ◽  
Vol 119 (4) ◽  
pp. 821-825 ◽  
Author(s):  
Salah Zenieh ◽  
Martin Corless
Keyword(s):  
Numerical Simulation ◽  
Rate Of Convergence ◽  
Lyapunov Functions ◽  
Controller Design ◽  
Mechanical Systems ◽  
Robotic Manipulator ◽  
Robust Tracking ◽  
Robotic Control ◽  
Tracking Controllers ◽  
Simulation Results

We consider the problem of designing robust tracking controllers for uncertain fully-actuated mechanical systems. We propose controllers which are robust r − α tracking controllers in the following sense. For a prespecified rate of convergence α > 0 and a prespecified tolerance r > 0, a proposed controller guarantees that the system’s trajectory exponentially converges to any desired trajectory with rate a and to within the tolerance r. Controller design is based on Lyapunov functions. The main advantage of these controllers is their simplicity. These controllers do not use the regressor matrix made popular in the area of robotic control which makes them simple to implement. Application to a two-link robotic manipulator is presented. Numerical simulation results are included.

Experimental Study of Assembly Stress Based on Manufacturing Characteristics

2013 ◽  
Vol 820 ◽  
pp. 141-146
Author(s):  
Jian Feng Chen ◽  
Xin Jin ◽  
Zhi Jing Zhang
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Mechanical Systems ◽  
Mechanical Equipment ◽  
Simulation Technology ◽  
Form Error ◽  
Contact State ◽  
Simulation Calculation ◽  
And Performance ◽  
Stress And Deformation

Assembly stress exists in mechanical equipment and instrumentation widely. Especially for precision mechanical systems, assembly stress may influence the system accuracy and performance. In this paper, taking form error and assembly force into account, the assembly stress and deformation were studied. By employing numerical simulation technology, the contact state of the part combining surface and additional deformational error were obtained, and an experiment was performed to verify the simulation calculation.

Hybrid Numerical Simulation of Micro Electro Mechanical Systems

PIERS Online ◽  
2006 ◽  
Vol 2 (3) ◽  
pp. 270-274 ◽  
Author(s):  
Michael Greiff ◽  
Uzzal Binit Bala ◽  
W. Mathis
Keyword(s):  
Numerical Simulation ◽  
Mechanical Systems ◽  
Micro Electro Mechanical Systems

Nonlinear Analysis of Unbalanced Mass of Vertical Conveyerwith Non-Ideal Exciters

2014 ◽  
Vol 706 ◽  
pp. 35-43 ◽  
Author(s):  
Hüseyin Bayıroğlu
Keyword(s):  
Numerical Simulation ◽  
Nonlinear Analysis ◽  
Lyapunov Exponents ◽  
Mechanical Systems ◽  
Dc Motor ◽  
Unbalanced Mass ◽  
Vertical Conveyor

In the area of mechanics and electronics, the behaviors of mechanical systems under periodic loadings have been examined by many researchers. Vertical conveyors are effective examples observing various kinds of parameters of this problem. In this study, the nonlinear analysis of unbalanced mass of vertical conveyor with non-ideal DC motor has been analyzed. The results of numerical simulation are plotted and Lyapunov exponents are calculated.

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