Optimization of fatigue life and fractography analysis of knuckle joint

Pugazhenthi, R.; Anbuchezhiyan, G.; Muthuraman, R.K.; Vignesh, M.; Ponshanmugakumar, A.

doi:10.1016/j.matpr.2021.04.018

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The steering knuckle is a critical component within a vehicle’s suspension system, serving multiple essential functions. Within the automotive industry, steering knuckles require attributes such as exceptional mechanical strength, unyielding structural rigidity, and a propensity for lightweight construction [ 1 , 2 , 3 ]. This need arises from the mechanics of steering, whereupon the actuation of the steering wheel by drivers induces tensile forces upon one portion of the steering knuckle and compressive forces upon the other.…”

Section: Introductionmentioning

confidence: 99%

Development of the Low-Pressure Die Casting Process for an Aluminium Alloy Part

Monteiro,

Soares,

Madureira

et al. 2024

Materials

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The low-pressure die casting (LPDC) process was experimentally and numerically studied to produce AlSi7Mg0.3 components such as steering knuckles. Steering knuckles are important safety components in the context of a vehicle’s suspension system, serving as the mechanical interface that facilitates the articulation of the steering to control the front wheel’s orientation, while simultaneously bearing the vertical load imposed by the vehicle’s weight. This work focuses on the development of a numerical model in ProCAST®, replicating the production of the aforementioned part. The model analyses parameters such as the filling dynamics, solidification process, and presence of shrinkage porosities. For the purpose of evaluating the quality of the castings, six parts were produced and characterised, both mechanically (tensile and hardness tests) and microstructurally (porosity and optical microscopy analysis). When correlating simulation results with the available experimental data, it is possible to conclude that the usage of the LPDC process is a viable alternative to the use of steels and other metals for the production of very high-quality castings while using lighter alloys such as aluminium and magnesium in more demanding applications.

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Section: Introductionmentioning

confidence: 99%

Development of the Low-Pressure Die Casting Process for an Aluminium Alloy Part

Monteiro,

Soares,

Madureira

et al. 2024

Materials

View full text Add to dashboard Cite

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“…In addition, determining the dynamical parameters of the full vehicle model and verifying its simulation results may spend much time on experiments, which reduces the efficiency of a new replacement part to some extent. Due to the complex characteristics of key parts, road surfaces, and tires, there are many design methods for the strength design, fatigue test, and life prediction of the steering arm according to the theoretical forces or accelerations [16][17][18][19]. In general, these methods did not consider the features of the vehicle, arrangement of each structure, and the assembly which may cause kinematic interference, and then the obtained results are often limited.…”

Section: Introductionmentioning

confidence: 99%

A Fast Calculation Method for Improving the Steering Arm of Mining Trucks with Macpherson Suspension

Zhang

et al. 2021

Applied Sciences

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The steering arm has recently been frequently broken in a kind of mining truck with Macpherson suspension. To accelerate replacing the broken parts and minimize the economic cost, a fast calculation method for improving the steering arm is proposed in this paper. In this method, the forces on the steering arm are calculated by quasi-static analysis under a low vehicle velocity. Dynamic characteristics of the tire and road are partly included by considering the ranges of the rolling resistance coefficient and friction coefficient from the empirical values, which determines the torque on the steering arm under extreme conditions. The rigid–flexible coupling model for the left steering mechanism in ANSYS Workbench is established and solved to obtain the distribution stress on the steering arm under extreme conditions. Then, the reliability of the simulation results based on this fast calculation method is verified by the experiment. After determining an improvement scheme considering the economic and time cost, the satisfactory strength is obtained. The results illustrate that the strength of the improved steering arm has nearly doubled. Finally, the effectiveness of the improved steering arm is demonstrated by the users’ feedback after it is manufactured, installed, and used.

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