scholarly journals Design and Analysis of Composite Leaf Spring

Author(s):  
Y. N. V. Santhosh Kumar ◽  
M. Vimal Teja

In these paper, composite structures for conventional metallic structures has many advantages because of higher specific stiffness and strength of composite materials is discussed. The automobile industry has shown increased interest in the replacement of steel spring with fiberglass composite leaf spring due to high strength to weight ratio. This work deals with the replacement of conventional steel leaf spring with a Mono Composite leaf spring using E-Glass/Epoxy. The design parameters were selected and analyzed with the objective of minimizing weight of the composite leaf spring as compar

IJOSTHE ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 1-5
Author(s):  
Abhishek Jha ◽  
Dr. Rashmi Dwivedi

Reducing weight while increasing or maintaining strength of products is getting to be highly important research issue in this modern world. Composite materials are one of the material families which are attracting researchers and being solutions of such issue. In this paper we describe design and analysis of polymer composite leaf spring. The objective is to compare the stresses, deformations and weight saving of composite leaf spring with that of steel leaf spring. The Automobile Industry has great interest for replacement of steel leaf spring with that of composite leaf spring, since the composite materials has high strength to weight ratio and good corrosion resistance. The material selected was glass fibre reinforced polymer (E-glass/epoxy) and is used against conventional steel. The design parameters can be selected and analysed with the objective of minimizing weight of the composite leaf spring as compared to the steel leaf spring.


Author(s):  
M. M. Patunkar ◽  
D. R. Dolas

Leaf springs are one of the oldest suspension components they are still frequently used, especially in commercial vehicles. The past literature survey shows that leaf springs are designed as generalized force elements where the position, velocity and orientation of the axle mounting gives the reaction forces in the chassis attachment positions. Another part has to be focused, is the automobile industry has shown increased interest in the replacement of steel spring with composite leaf spring due to high strength to weight ratio. Therefore, analysis of the composite material becomes equally important to study the behavior of Composite Leaf Spring. The objective of this paper is to present modeling and analysis of composite mono leaf spring (GFRP) and compare its results. Modelling is done using Pro-E (Wild Fire) 5.0 and Analysis is carried out by using ANSYS 10.0 software for better understanding.


2014 ◽  
Vol 611 ◽  
pp. 346-351 ◽  
Author(s):  
Władysław Papacz ◽  
Edward Tertel ◽  
Peter Frankovský ◽  
Piotr Kuryło

The automobile industry has shown an increased interest in the use of composite leaf springs due to their high strength to weight ratio. The introduction of composite materials has made it possible to reduce the weight of the leaf spring without any reduction in load carrying capacity and stiffness. In this paper, the results of research on fatigue life of composite (Glass Fiber Reinforced plastic – GFRP) leaf springs are presented. Composite springs were designed in such a way that they could replace steel springs in a van.


Author(s):  
YOGESH G. NADARGI ◽  
DEEPAK R. GAIKWAD ◽  
UMESH D. SULAKHE

The automobile industry has shown increased interest in the replacement of steel spring with fibre glass composite leaf spring due to high strength to weight ratio. Therefore the aim of this work is to reduce the weight and low cost fabrication of complete mono composite leaf spring and mono composite leaf spring with bonded end joints. Also, general study on the analysis and design. A single leaf with variable thickness and width for constant cross sectional area of unidirectional glass fibre reinforced plastic (GFRP) with similar mechanical and geometrical properties to the multi leaf spring, was designed, fabricated (hand- layup technique) and tested. The results showed that an spring width decreases hyperbolically and thickness increases linearly from the spring eyes towards the axle seat. The finite element results using ANSYS software showing stresses and deflections were verified with analytical and experimental results. The design constraints were stresses (Tsai-Wu failure criterion) and displacement. Compared to the steel spring, the composite spring has stresses that are much lower, the natural frequency is higher and the spring weight is nearly 85 % lower with bonded end joint and with complete eye unit.


2015 ◽  
Vol 787 ◽  
pp. 602-606
Author(s):  
S. Melvin Savio ◽  
D. Somasundaram ◽  
V. Vijaya Rajan

Automobile industries have shown more interest for the replacement of conventional steel leaf spring with that of the composite leaf spring due to its high strength to weight ratio. The objective of the work is to carry out computer aided design and analysis of composite (Glass fiber reinforced plastic) leaf spring and conventional steel leaf spring by considering certain parameters like stress, deflection and strain energy with similar design considerations and loading conditions. The material of the conventional leaf spring is 65Si7 and composite leaf spring is S2-Glass\Epoxy. The CAD model of the leaf spring is modeled in Pro-E and the numerical analysis is carried out using finite element analysis, ANSYS 14. Stress, deflection and strain energy results of both steel and composite leaf spring are obtained and compared. The result shows that the composite leaf spring has maximum strain energy than conventional steel leaf spring and weight of the composite leaf spring is nearly reduced up to 85% compared with steel material.


2014 ◽  
Vol 3 (2) ◽  
pp. 185 ◽  
Author(s):  
S. Rajesh ◽  
S. Nakkeran ◽  
GB. Bhaskar

Although leaf springs are one of the oldest suspension components, they are still frequently used in the automobile vehicles. Weight reduction is the main focus in the automobile industries. Weight reduction can be achieved primarily by the introduction of better materials, design optimization, and better manufacturing processes. The achievement of weight reduction with adequate improvement of mechanical properties has made composite a very good replacement material for conventional steel. Selection of material is based on the cost and strength of material. The composite materials have more elastic strain energy, storage capacity and high strength to weight ratio compared to steel. This paper briefs about the research carried out for the part of three decades on design, analysis, and selection of material, experiments and fabrication of composite leaf spring. Keywords: Composite Leaf Spring, Composite Materials, Finite Element Analysis, Weight Reduction, Glass Fiber Reinforced Plastic (GFRP).


Author(s):  
Vaishnavi S. Thorat

Now-a-days it is necessary to conserve natural resources, economize energy and weight reduction. Weight reduction of vehicle has become the main issue in Automobile Industries. It can be achieved by introduction of better material, design optimization and better manufacturing process. The Automobile Industry has interest for replacement of Steel Leaf Spring with Composite Leaf Spring. Composite Material has High Strength and Stiffness to Weight Ratio. The Objective is to compare the Stresses, Deformation, Elastic Strain and Weight of Composite Leaf Spring with that of Steel Leaf Spring. The Material Selected is Glass Fibre Reinforced Polymer is used against Conventional Steel. The Leaf Spring was modelled in CATIA and analysis done in ANSYS Software.


2021 ◽  
Vol 347 ◽  
pp. 00031
Author(s):  
Brighton Manaba ◽  
Vuyo T Hashe

In the quest to conserve natural resources and economic energy. Weight reduction has been the focus of auto-manufactures and the aerospace industry in the present day. Weight reduction can be archived primarily by introducing better design optimization, better material, and improved manufacturing processes. This approach by introducing composite materials into automobile industries, which has high strength to weight ratio and excellent corrosive resistance, can fulfil the requirement. This review paper investigates the use of composite materials in the design of leaf springs for automotive vehicles. The paper underscores the suitability of composite materials for leaf spring in automobiles and develops a new leaf spring design that optimizes weight reduction and strength. The review provides details regarding previous efforts conducted on the design of leaf springs while outlining the knowledge gap areas. This review commences with an introduction to leaf springs and a brief history of their development. Followed by the properties that make an excellent leaf spring, this helps narrow down the information required for further developments providing avenues for possible future research.


2021 ◽  
Vol 12 (6) ◽  
pp. 8343-8352

In recent years, natural fibers have become more widely used as reinforcement in polymer composites to generate low-cost products. Fibrous reinforcements in polymer matrices lead to good mechanical and electrical properties for composite materials. Depending on the grade and orientation, composites can be one-fifth the weight of steel while offering similar or better stiffness and strength. In addition, unlike steel or aluminum, composites do not rust or corrode. Composite materials reinforcing phase gives durability, strength, and stiffness. Composite materials have traditionally been employed as structural materials. Composite materials are increasingly being used in electrical applications such as bushings, circuit breakers, coupling capacitors, and so on, thanks to the growing growth of the electrical sector. The design parameters for structural and electrical composites differ dramatically due to the enormous differences in property requirements. Depending on the application, structural composites. Structural composites prioritize sufficient strength and modulus, while electrical composites prioritize superior dielectric constant, thermal conductivity and low thermal expansion, and shielding effectiveness. In the electrical industry, low density is desired because it allows for weight reduction. It is also desirable to have a high strength-weight ratio and dielectric properties. This paper provides a brief review of the properties of polymer composite materials and their application in the high voltage industry.


2013 ◽  
Vol 378 ◽  
pp. 209-212
Author(s):  
Dong Gun Lee ◽  
Byunh Hyun Ahn ◽  
Je Hyun Lee ◽  
Uk Rae Cho ◽  
Bon Heun Koo

Al7075 alloy has typically good mechanical properties. Al7075 alloy has an ultimate tensile strength and yield strength, which is commonly used in the manufacturing of heavy-duty structures requiring good corrosion resistance and in applications requiring high strength to weight ratio, as well as good fatigue resistance. However, as compared to strength and corrosion of conventional steel material, it has some drawbacks. To overcome these disadvantages, Electrolytic plasma processing (EPP) was used. (EPP) is a novel electrochemical and physical surface treatment process for generating protective coatings on light metals. Because, these coating scan present high hardness and continuous barriers, it can offers good protection against abrasion, corrosion and heat as well as electrical insulation. The EPP treatments were carried out under a hybrid voltage of AC 200V (50Hz) combined with DC 260V power supply.


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