Abstract
Complex mathematical problems have been solved with the aid of software application to obtain reliable results. The positional kinematic analysis of a slider crank mechanism involves computation of the motion parameters: linear displacement, velocity and acceleration of the slider; and angular velocity and angular acceleration of the connecting rod for every 300 variation of the crank angle. This study aimed to develop a customized software which can be used to efficiently analyse a given design of a four-bar and a slider-crank mechanisms. A program was written using VB (Visual Basic) programming language for the equations of angular velocities and angular acceleration of the coupler and follower for the four-bar linkage and the linear velocity and acceleration of the piston for the slider crank mechanism. The program was tested with different parameters for the mechanisms and the solutions compared with the results from manual calculations. The findings revealed that there were no differences (p ≤ 0.05) between the results using the program and manual calculations, which imply the accuracy of the program. It can be concluded that the program could be used to solve problems of four- bar linkage and slider-crank mechanisms.
Highlights
A machine is a combination of rigid bodies, with various components connected moving with definite relative motion, applying force from the source of power in order to overcome higher resistance relatively to the applied force
The relative motions of the rigid bodies are located in one plane; or if otherwise the mechanism can be referred to as the spatial mechanism [7]
The objective of this paper is to develop a customized program which can be used to efficiently analyze a given design of a four-bar mechanism and a slider-crank mechanism
Summary
A machine is a combination of rigid bodies, with various components connected moving with definite relative motion, applying force from the source of power in order to overcome higher resistance relatively to the applied force. A mechanism, according to [1,2,3,4] can be defined as a combination structural body, interconnected moving with definite relative motions in conjunction with one another [5, 6]. The relative motions of the rigid bodies are located in one plane; or if otherwise the mechanism can be referred to as the spatial mechanism [7]. Absence of fixed link with the presence of combination of links and pairs cannot be referred to as a mechanism but a kinematic chain,
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