The Specification of Unknown Force within Dynamic Analysis of Slider Crank Mechanism by Three Various Access

2014 ◽  
Vol 1016 ◽  
pp. 239-243 ◽  
Author(s):  
Katarina Monkova ◽  
Andrea Cizikova ◽  
Peter Monka
Keyword(s):  
Analytical Solution ◽  
Dynamic Analysis ◽  
Virtual Work ◽  
Final Decision ◽  
Graphical Solution ◽  
Principle Of Superposition ◽  
Basic Principles ◽  
Computer Aid ◽  
Advantages And Disadvantages ◽  
Crank Mechanism

The article deals with the specification of unknown force within dynamic analysis of slider crank mechanism by three various access. The method of virtual work was used at the analytical solution; the principle of superposition was used at the graphical solution and the software PTC Creo was used at the solution with computer aid. All three types of the solution have their self-advantages and disadvantages. The final decision, which of methods should be selected for the solution, depends on required result precision and on the abilities of investigator. In all cases, however, it is necessary to know the basic principles of mechanics.

Modeling and Dynamic Analysis of a Slider-Crank Mechanism With Flexible Coupler and Joint

1991 ◽  
Author(s):  
Junghsen Lieh ◽  
Imtiaz Haque
Keyword(s):  
Dynamic Analysis ◽  
Virtual Work ◽  
Equations Of Motion ◽  
Joint Stiffness ◽  
Mechanism Model ◽  
Double Frequency ◽  
Varying Coefficients ◽  
Matrix Expansion ◽  
Time Varying Coefficients ◽  
Crank Mechanism

Abstract Modeling and dynamic analysis of a slider-crank mechanism with flexible joint and coupler is presented. The equations of motion of the mechanism model are formulated using a virtual work multibody formalism and cast in terms of a minimum set of generalized coordinates through a Jacobian matrix expansion. Numerical results show the influence of time-varying coefficients on the mechanism dynamic behavior due to a repeated task. The results illustrate that the joint motion and coupler deformation are highly coupled. The joint response is dominated by double frequency of input, however, the coupler deformation is influenced by the same frequency as that of excitation. Increase in joint stiffness tends to decrease the variations in coupler deformation.

Efficient Dynamic Analysis Method for Multibody Systems With Constraint Violation Stabilization Method

1999 ◽  
Author(s):  
Apiwat Reungwetwattana ◽  
Shigeki Toyama
Keyword(s):  
Dynamic Analysis ◽  
Multibody Systems ◽  
Analysis Method ◽  
Stabilization Method ◽  
Kinematic Constraint ◽  
Constraint Violation ◽  
Closed Loops ◽  
Constraint Stabilization ◽  
Constraint Equations ◽  
Crank Mechanism

Abstract This paper presents an efficient extension of Rosenthal’s order-n algorithm for multibody systems containing closed loops. Closed topological loops are handled by cut joint technique. Violation of the kinematic constraint equations of cut joints is corrected by Baumgarte’s constraint violation stabilization method. A reliable approach for selecting the parameters used in the constraint stabilization method is proposed. Dynamic analysis of a slider crank mechanism is carried out to demonstrate efficiency of the proposed method.

Dynamic Analysis of Flexible Manipulator Arms With Distributed Viscoelastic Damping

1997 ◽  
Vol 119 (4) ◽  
pp. 831-833 ◽  
Author(s):  
Fan Zijie ◽  
Lu Bingheng ◽  
C. H. Ku
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Dynamic Analysis ◽  
Virtual Work ◽  
Robot Manipulators ◽  
Flexible Manipulator ◽  
Viscoelastic Damping ◽  
Principle Of Virtual Work ◽  
Flexible Robot ◽  
Damping Treatments

The main objective of this work is to predict the effect of distributed viscoelastic damping on the dynamic response of multilink flexible robot manipulators. A general approach, based on the principle of virtual work, is presented for the modeling of flexible robot arms with distributed viscoelastic damping. The finite element equations are developed, and a recurrence formulation for numerical integration of these equations is obtained. It is demonstrated, by a numerical example, that the viscoelastic damping treatments have a significant effect on the dynamic response of flexible robot manipulators.

The Basic Principles of Competitive Strategy

2015 ◽  
pp. 693-718
Author(s):  
Nabyla Daidj
Keyword(s):  
Strategic Planning ◽  
Competitive Advantage ◽  
External Environment ◽  
Strategic Thinking ◽  
Strategic Analysis ◽  
Sustainable Competitive Advantage ◽  
Complex Dynamic ◽  
Strategic Positioning ◽  
Basic Principles ◽  
Advantages And Disadvantages

Firms operate in a more and more complex, dynamic, less predictable environment. This situation requires following different approaches of strategic positioning and strategic planning and developing new patterns of strategic thinking. There are several strategic models and tools. Most of them have advantages and disadvantages. In spite of these limitations, these models must be examined. The purpose of this chapter is to conduct a strategic analysis (external and internal diagnoses). It familiarizes the reader with the forces that shape competition in a company's external environment and then analyzes internal strategic capabilities for identifying strategic sustainable competitive advantage.

An Intriguing Exponential Inequality

2009 ◽  
Vol 103 (1) ◽  
pp. 50-55
Author(s):  
John Robert Perrin
Keyword(s):  
Analytical Solution ◽  
Exponential Inequality ◽  
Graphical Solution ◽  
Calculus Students

An algebra problem with a graphical solution challenges precalculus and calculus students to determine an analytical solution.

Analysis of methods to eliminate soil contamination with rocket fuel

2018 ◽  
Vol 22 (8) ◽  
pp. 55-59 ◽  
Author(s):  
E.M. Messineva ◽  
A.G. Fetisov ◽  
N.B. Manuilova
Keyword(s):  
Soil Contamination ◽  
Soil Reclamation ◽  
Space Technology ◽  
Rocket Fuel ◽  
Basic Principles ◽  
Advantages And Disadvantages ◽  
Biological Methods ◽  
Sources Of Contamination

The sources of contamination with heptyl (asymmetric dimethylhydrazine (NDMG)) associated with the operation of rocket and space technology have been identified and analyzed. Existing chemical, thermal, adsorption and biological methods for cleaning soil soils from pollution of NDMG are examined in detail and their basic principles are analyzed. In the process of work, the advantages and disadvantages of all the methods considered, as well as the features of their application, are revealed. The basic principles of choosing the most suitable methods in each particular situation are proposed. In general, a reasonable combination of all existing methods is recommended at different stages of soil reclamation.

Sign in / Sign up

Export Citation Format

Share Document