Fatigue Analysis of Steering Knuckle using Finite Element Simulation: Technical Note

Madhusudhanan, S.; Rajendran, I.; Raguganeshkumar, B.

doi:10.4273/ijvss.9.3.02

Cited by 3 publications

(3 citation statements)

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“…Due to decrease in austenite %, the mechanical properties slightly decreased compared to X 1 and hardness increases. Similar results have been reported based on upper and lower bainite and retained austenite [12]. Compared with X, presence of alloying elements Cu and Ni stabilizes the formation of upper and lower bainite with retained austenite.…”

Section: Microstructure Examinationsupporting

confidence: 87%

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Archives of Metallurgy and Materials

Ramkumar¹,

Madhusudhanan²,

Rajendran³

2019

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The research article address, the mechanical properties such as fatigue, impact strength and tribological properties of Austempered ductile iron (ADI) has been investigated. The samples of ADI iron were austenitized at 927°C for 2 hrs and later it was under austempering process for 2 hrs at a temperature range of 240°C to 400°C. Experiments under axial loading has been carried out on three different compositions (without Ni(X), 0.22 wt % Ni (X 1 ), 0.34 wt. % Ni (X 2 ). Fabricated test bars were converted in to as per ASTM standard samples for different tests. In order to study the influence of chunky nickel morphology studies on fatigue life and impact strength were carried out on a second set of specimens without any microstructural defect. Metallurgical analyses were performed on all the samples of heat treated samples (AF -Ausferrite, MB -Mixed bainite, M -Martensite, RA -Retained Austenite and N-Nodule) were found and compared. It was found that a mean content of 22% of chunky nickel in the microstructure (with respect to total Ni content) influence considerably the fatigue and impact strength properties of the cast iron. Moreover tribological properties of the specimens were also studied under dry sliding conditions at various sliding speed and load. The wear resistance and coefficient of friction were found to increase with increase in load and sliding speed.

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Section: Microstructure Examinationsupporting

confidence: 87%

“…High cycle fatigue tests were conducted on steering knuckle at ±4.7 KN up to 1×10 7 cycles and no damage was recorded. The test results met the industrial standard [12].…”

Section: Mechanical Studiesmentioning

confidence: 65%

Archives of Metallurgy and Materials

Ramkumar¹,

Madhusudhanan²,

Rajendran³

2019

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“…Large areas are divided into several smaller, simpler areas. These simpler parts are designated as finite elements [4]. A multi-axis dynamic testing facility capable of creating these loads was chosen to carry out real load tests.…”

Section: Introductionmentioning

confidence: 99%

Development of methodology for multiaxial dynamic testing of materials for automotive construction groups

FOJTÍK,

VÁŇOVÁ

2023

METAL Conference Proeedings

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The current automotive industry requires weight savings in the components used in the production of vehicles. At the same time, however, the demand for safety, high strength and fatigue life is increasing. This study aims to create a comprehensive methodology that will help designers and material engineers choose the appropriate technical solution and material for a highly stressed axle element. Specifically, the possibility of replacing the front axle weight produced from ductile iron with a high-strength aluminium alloy EN AW-7075 in T6 condition is addressed. As part of the solution concept, a 3D model was created and, using the finite element method (FEM), a simulation of the response of the mass to the load corresponding to traffic on the road was carried out. Furthermore, the technological procedure for testing automotive components using a multi-axis dynamic testing facility was established, where the DIC (Digital Image Correlation) method was used to evaluate load states and deformations. The basic limit states of vehicle operation, braking and cornering were tested. The work also deals with material factors that influence the choice of a suitable alloy, and verification of the degree of safety of the structural and material solution. The measurement results from both methods were compared with the contractual yield strength and fatigue strength. The results of FEM simulations and measurements using DIC positively verified the possibility of changing the material of the block, from ductile cast iron to EN AW-7075 strength aluminium alloy in T6 condition. The described methodology can therefore be used in the design, construction and implementation of car prototype chassis.

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