International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023
p-ISSN: 2395-0072
www.irjet.net
STRESS ANALYSIS & OPTIMIZATION OF A LOWER CONTROL ARM OF SUSPENSION SYSTEM BY USING OPTISTRUCT Ranshing Aishwarya Sanjeev1, Amol B Gaikwad2, Kharad B.N.3 1Sholar,Dept of Mechanical Engg, Vishwabharti Academy’s College of Engineering, Ahmednagar, Maharashtra,
India
2Asst. Prof. Dept of Mechanical Engg, Dr. D.Y.Patil School of Engineering, Pune, Maharashtra, India
3Asst. Prof. Dept of Mechanical Engg, Vishwabharti Academy’s College of Engineering, Ahmednagar, Maharashtra,
India ---------------------------------------------------------------------***--------------------------------------------------------------------However, certain vehicles like the Honda Accord and many Abstract:
trucks have four control arms, consisting of two upper and two lower arms. These control arms serve the purpose of connecting the car's frame or body to the assembly that holds the front wheel, known as the steering knuckle. To enable flexibility, the control arms are attached to the frame or body of the car using rubber bushings called control arm bushings.
The lower control arm is a critical component in the suspension system of an automobile, responsible for supporting the weight of the vehicle and maintaining stability during various driving conditions. This abstract presents a systematic approach towards the optimization of the lower control arm design, aiming to enhance its performance and reliability while considering factors such as weight reduction, material selection, and structural integrity. The optimization process begins with a comprehensive review of existing lower control arm designs, identifying their strengths and limitations. Next, various design parameters are identified and evaluated, including geometric dimensions, material properties, and attachment points. Utilizing advanced computer-aided design (CAD) software and simulation tools, a virtual model of the lower control arm is created to assess its structural behavior under different loading scenarios.
1. INTRODUCTION 1.1 Suspension System Suspension refers to the collection of springs, shock absorbers, and linkages that establish a connection between a vehicle and its wheels, enabling relative motion between the two. It serves a dual function by enhancing the vehicle's road holding, handling, and braking performance for improved active safety and driving enjoyment, while also providing a comfortable and isolated environment for occupants, reducing road noise, bumps, and vibrations. Achieving these objectives often requires striking a balance, as they can conflict with each other. Therefore, optimizing suspension systems involves finding the appropriate compromise that meets the desired outcomes.
Figure: 1.1 Lower control Arm 1.3 Problem Statement The unsprung weight of a wheel plays a crucial role in striking a balance between its ability to follow bumps and isolate vibrations. If a wheel is heavier and moves less, it will not absorb vibrations effectively, resulting in the transfer of road surface irregularities to the cabin through the suspension geometry. As a result, ride quality and road noise are adversely affected. Additionally, when the wheels encounter longer bumps, a higher unsprung mass leads to increased energy absorption by the wheels, further deteriorating the ride experience.
1.2 Lower Control Arm The lower control arm is an essential component of the MacPherson suspension system commonly found in vehicles. In most front suspensions, two control arms, often referred to as lower control arms, are present.
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Impact Factor value: 8.226
Furthermore, excessive unsprung weight poses challenges in wheel control during intense acceleration or braking. It
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