Three-Link Leaf-Spring Model for Road Loads

Jayakumar, Paramsothy; Alanoly, James; Johnson, Regina Jones

doi:10.4271/2005-01-0625

Cited by 11 publications

(8 citation statements)

References 2 publications

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“…To ensure the stiffness consistency of the CM suspension and the TLS suspension, the CS stiffness K coil f and K coil r needs to be corrected. According to equations (11) and ( 14), the stiffness K…”

Section: Equivalent Model Of Ls Vertical Stiffnessmentioning

confidence: 99%

“…Firstly, the PWT simulation is carried out on the LS suspension multibody model, and the relationship among wheel travel distance X l , hub force F l X l ð Þ, and suspension stiffness K s l X l ð Þ is obtained. Secondly, the CS stiffness is calculated according to equations (11)(12)(13). The spring displacement and free length are obtained through equations ( 14)- (15).…”

Section: Equivalent Model Of Ls Vertical Stiffnessmentioning

confidence: 99%

“…To parameterize the longitudinal parabolic leaf spring (LPLS) stiffness, an approximate kinematic model is developed using the three-link model connected by either torsion springs or bushings. 11,12 The varying width and height of parabolic leaf springs with their length lead to non-constant curvature in the cantilever beam, resulting in highly nonlinear static deflection behavior. To capture this nonlinearity, a five-link LS model for describing the parabolic leaf spring’s stiffness characteristics was proposed.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and simulation of the equivalent vertical stiffness of leaf spring suspensions

Zhang,

Long,

Lin

et al. 2023

Advances in Mechanical Engineering

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In vehicle multi-body dynamics (MBD) modeling, the stiffness parameterization of leaf spring (LS) is an unavoidable challenge regardless of the selection of modeling methods. On the contrary, the parameterization of Coil Spring (CS) stiffness is easy to achieve by adjusting the scale factor. Therefore, a novel LS stiffness parameterization method by treating the suspension stiffness as an intermediate variable through a CS stiffness is proposed based on the virtual displacement theory. The proposed method is then implemented in the vehicle-level modeling of a commercial Van with front transverse leaf spring suspensions and rear longitudinal parabolic leaf spring suspensions. The MBD model is validated by natural frequency tests and suspension stiffness simulations. Furthermore, the vertical acceleration of the car body is also verified. Results show that the root mean square (RMS) values of body vertical acceleration in the equivalent CS model are just slightly lower than that in the LS suspensions. The applicability and capability of the proposed method are proven to address the limitation of LS stiffness parameterization in MBD modeling. It lays the groundwork for efficiently simulating the LS suspension in vehicle ride and handling design and optimization.

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Section: Equivalent Model Of Ls Vertical Stiffnessmentioning

confidence: 99%

Section: Equivalent Model Of Ls Vertical Stiffnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling and simulation of the equivalent vertical stiffness of leaf spring suspensions

Zhang,

Long,

Lin

et al. 2023

Advances in Mechanical Engineering

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“…Motion interference between steering and suspension system. In traditional design model, JJ' track is obtained through arc approximation algorithm (SAE "Three-Link" Model) which ignores the arced motion of shackle of the leaf spring and assumes that the deformation of leaf spring is always arc [15,22]. This method is available only for the symmetrical leaf springs.…”

Section: Interference Between Steering and Suspension Systemmentioning

confidence: 99%

“…These may then be anchored to the vehicle chassis at their front end via a simple pin joint, and at their other end via a double-pinned support arm that accommodates the changes in spring length as the latter deflects. Jayakumar et al, [15] presented a simple and accurate Three-Link Leaf-Spring model with SAE guidelines. Sugiyama et al, [16] developed a nonlinear elastic model of leaf springs based on the absolute nodal coordinate formulation.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of the Double-Axle Steering Mechanism with Dynamic Loads

Qin¹,

Zhang²,

Chen³

2012

TOMEJ

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A hierarchical optimization procedure for the optimal synthesis of a double-axle steering mechanism used in truck with dynamic loads is presented. A multibody model of double-axle steering mechanism is presented to characterize the leaf spring effect. The influences of dynamic loads, the motion interference of steering linkage resulted from the elastic deformation of leaf spring, and the effects of wheel slip angles and the position discrepancies of wheel speed rotation centers are studied systematically. A hierarchical optimization method based on target cascading methodology is proposed to classify the design variables of double-axle steering mechanism into four levels. A double-axle steering mechanism for a heavy-duty truck is utilized to demonstrate the validity of the proposed method. The simulation results indicate that the hierarchical optimization procedure is effective and robust. And as a result, it will surely be widely used in engineering.

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Application of the Infrared Sensitive Technology in Hot Straightening Machines Based on Data Analysis

Sun

2020

Advances in Intelligent Systems and Computing

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Three-Link Leaf-Spring Model for Road Loads

Cited by 11 publications

References 2 publications

Modeling and simulation of the equivalent vertical stiffness of leaf spring suspensions

Modeling and simulation of the equivalent vertical stiffness of leaf spring suspensions

Analysis and Optimization of the Double-Axle Steering Mechanism with Dynamic Loads

Application of the Infrared Sensitive Technology in Hot Straightening Machines Based on Data Analysis

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