Lightweight MacPherson Strut Suspension Front Lower Control Arm Design Development

2011 ◽  
Author(s):  
Hannes Fuchs ◽  
Richard Salmon
2020 ◽  
Vol 22 (4) ◽  
pp. 1223-1238 ◽  
Author(s):  
S. Dehbari ◽  
J. Marzbanrad

AbstractThe present paper undertakes kinematic and dynamic analysis of front suspension system. The investigated model is a full-scale Macpherson which is a multibody system. Two degree of freedom model is considered here to illustrate the vertical displacement of sprung mass and unsprung mass with using displacement matrix. Ride and handling parameters including displacement of sprung and unsprung masses, camber/caster angle, and track changes are derived from the relationships. Moreover, geometrical model and equations are validated by Adams/Car software. The kinematic and dynamic results have been compared in both analytical and numerical outputs for verification. The proposed analytical model shows less than 5% differences with a complicated multibody model.


2000 ◽  
Author(s):  
Keum-Shik Hong ◽  
Hyun-Chul Sohn ◽  
J. Karl Hedrick

Abstract In this paper, a modified skyhook control for the semi-active Macpherson suspension system is investigated. A new model for the Macpherson type suspension, which incorporates the rotational motion of the unsprung mass, is introduced and a feedback control law utilizing the modified skyhook control strategy is derived. Also, two filters to estimate the absolute velocity of the sprung mass and the relative velocity of the rattle space are designed. For testing the control performance, the actual damping force has been included in the hardware-in-the-loop simulations. The control performances of the semi-active system and a passive one have been compared. HILS results are provided.


2014 ◽  
Vol 223 ◽  
pp. 181-190
Author(s):  
Robert Żuczek ◽  
Stanisław Pysz ◽  
Piotr Sprawka ◽  
Tomasz Muszyński

The new research trends are moving away from research works that are not directly connected with industrial applications. The Integrated Computational Materials Engineering (ICME) is an excellent example of the relationship between scientific research and the industrial sector.As an example of the design development of construction of a suspension component, an overview of the changes of a welded part replaced with cast component is presented. The identification of boundary conditions and forces operating on the nodes of the suspension element allowed determining the critical areas in the existing welded construction. Then the new design of casting for high performance applications was developed. Analysis of the kinematics of the suspension components also revealed the need for changes in the design of the mounting points of the suspension components to reduce the maximum values ​​of forces and enforced moments. As a result of successive stages of the topology optimization of analysed cast, control arms with significantly lower values ​​of maximum stresses were obtained. The material conversion of welded part with high strength AlZnMgCu aluminium alloy allowed the reduction of the weight by 25% for the lower control arm and 30% for upper control arm.


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.


Author(s):  
Yonas Hailemariam Alemayohu ◽  
Ramesh Babu Nallamothu ◽  
Anantha Kamal Nallamothu ◽  
Seshu Kishan Nallamothu

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