Numerical kinematic analysis of the standard macpherson motor-vehicle suspension system

2003 ◽  
Vol 17 (12) ◽  
pp. 1961-1968 ◽  
Author(s):  
Hazem Ali Attia
Author(s):  
Hazem A. Attia ◽  
Maher G. Mohamed

Abstract In the present paper, an efficient numerical algorithm for the kinematic analysis of the multi-loop MacPherson Strut suspension system is formulated. The suspension system is usually used for front as well as axles of current car productions. The spatial two-DOF multi-loop MacPherson Strut suspension mechanism contains all types of basic kinematic joints; revolute, prismatic, and spherical joints. The kinematic analysis is carried out in terms of the rectangular Cartesian coordinates of some defined points in the links and at the joints. The presented formulation in terms of this system of coordinates is simple and involves · only elementary mathematics. A numerical example is presented.


2021 ◽  
Vol 1107 (1) ◽  
pp. 012092
Author(s):  
Eyere Emagbetere ◽  
Peter A. Oghenekovwo ◽  
Christabel C. Obinabo ◽  
Abraham K. Aworinde ◽  
Felix A. Ishola ◽  
...  

2000 ◽  
Vol 24 (2) ◽  
pp. 391-399 ◽  
Author(s):  
H.A. Attia

In this paper, an efficient numerical algorithm for the kinematic analysis of a double wishbone suspension is presented. The double wishbone suspension system is usually used for front wheel axles of rear wheel driven cars. The kinematic analysis of the one-DOF suspension mechanism is carried out in terms of the rectangular Cartesian coordinates of some defined points in the links and the joints. Geometric constraints that fix the distances between the points belonging to the same rigid link are introduced. Additional driving constraints are added as a function of the input driving variables. The nonlinear constraint equations are solved by iterative numerical methods. The corresponding linear equations of velocity and acceleration are solved numerically to yield the velocities and accelerations of the unknown points on the wheel knuckle. The velocities and accelerations of the other points of interest can be calculated if their positions are locally specified. In addition, the angular velocity and acceleration of any link in the mechanism are evaluated. The presented formulation in terms of the system of coordinates based on the presented formulation in terms of the system of coordinates based on Cartesian coordinates of specified link points is simple and involves only elementary mathematics. A numerical example is presented.


Author(s):  
Maria Aline Gonçalves ◽  
Rodrigo Tumolin Rocha ◽  
Frederic Conrad Janzen ◽  
José Manoel Balthazar ◽  
Angelo Marcelo Tusset

2019 ◽  
Vol 12 (4) ◽  
pp. 357-366
Author(s):  
Yong Song ◽  
Shichuang Liu ◽  
Jiangxuan Che ◽  
Jinyi Lian ◽  
Zhanlong Li ◽  
...  

Background: Vehicles generally travel on different road conditions, and withstand strong shock and vibration. In order to reduce or isolate the strong shock and vibration, it is necessary to propose and develop a high-performance vehicle suspension system. Objective: This study aims to report a pneumatic artificial muscle bionic kangaroo leg suspension to improve the comfort performance of vehicle suspension system. Methods: In summarizing the existing vehicle suspension systems and analyzing their advantages and disadvantages, this paper introduces a new patent of vehicle suspension system based on the excellent damping and buffering performance of kangaroo leg, A Pneumatic Artificial Muscle Bionic Kangaroo Leg Suspension. According to the biomimetic principle, the pneumatic artificial muscles bionic kangaroo leg suspension with equal bone ratio is constructed on the basis of the kangaroo leg crural index, and two working modes (passive and active modes) are designed for the suspension. Moreover, the working principle of the suspension system is introduced, and the rod system equations for the suspension structure are built up. The characteristic simulation model of this bionic suspension is established in Adams, and the vertical performance is analysed. Results: It is found that the largest deformation happens in the bionic heel spring and the largest angle change occurs in the bionic ankle joint under impulse road excitation, which is similar to the dynamic characteristics of kangaroo leg. Furthermore, the dynamic displacement and the acceleration of the vehicle body are both sharply reduced. Conclusion: The simulation results show that the comfort performance of this bionic suspension is excellent under the impulse road excitation, which indicates the bionic suspension structure is feasible and reasonable to be applied to vehicle suspensions.


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