T omposite material offers opportunities for substantial weight saving without compromising on load carryiicmpc 2017 design and analysis of leaf spring using various composites a an overview k. Design and analysis of leaf spring using various composites. Leaf spring design guidelines laminated leaf spring. The leaf spring was modeled in proe and the analysis was done using ansys metaphysics software. We know that the spring plays very essential part of every automobile for suspension point of view. Pdf leaf springs design, calculation and testing requirements. Single leaf steel springs, called mono leaf, are used on some vehicles. A single or mono leaf spring is usually tapered to produce a variable spring rate. In general, it is found that fiberglass material has better strength characteristic and lighter in weight as compare to steel for leaf spring. Design and analysis of composite leaf spring by using fea and. Pdf design, analysis and optimization of leaf spring. For this purpose, a rear leaf spring for mahindra modelcommander 650 di is considered. Leaf spring for steel 65si7 material 1tons load fig 10. A typical leaf spring configuration of tata407 light commercial vehicle is chosen for study.
Design and fea analysis the leaf spring model is created by modelling in proe and it is imported in to the ansys software. If slope is constant, it is a linear spring, and y f k where. As fea is a computer based mathematically idealized real system, which breaks geometry into element. At the same time, the literature available regarding experimental stress analyses are more. The design parameters were selected and analyzed with the objective of minimizing weight of the composite leaf spring as compared to the steel leaf spring. The objective is to compare the stresses, deformations and weight saving of composite leaf spring with that of steel leaf spring. Leaf springs are used in heavy load vehicle where load is much larger than in passenger vehicles, they are used in vehicles which are limited to varying cycles stress to millions thus eventually leads to failure of fatigue. E design engineering, rscoe pune,india 2 professor, ph. They considered static three dimensional contact problem of the leaf car spring and the solution is obtained by finite element method performed in adina 7. This project describes design and experimental analysis of composite leaf spring made of glass fiber reinforced polymer. Design and analysis of composite leaf spring by using fea.
Abstract this project focuses on the design, development, evaluation, and analysis of an adjustable vehicle suspension system. The experimental fatigue life prediction of leaf springs is a time consuming process. G scholar, mechanical engineering, ips college of technology management. Design and analysis of leaf spring internet archive. Leaf springs are used for rear suspensions on cars and many light trucks. Design and manufacture of an adaptive suspension system. A variable rate can be accomplished with a leaf spring suspension by providing contacts on the mount that effectively. The benefit of leaf spring over helical spring is that the ends of the spring may be leaded along a definite path as it deflects to act as a structural. Explore design, analysis, fabrication and testing of a composite leaf spring with free download of seminar report and ppt in pdf and doc format. The objective is to compare the load carrying capacity, stiffness and weight savings of composite leaf spring with that of steel leaf spring. Design, analysis and fabrication of composite leaf spring. In any leaf spring, stresses are maximum at ubolt clamp position and both end eye. The design parameters are selected and analyzed with the objective of minimizing weight of the composite leaf spring as compared to the steel leaf spring.
This manual is written as a guide for the designer of leaf spring installations. A finite element approach for analysis of multi leaf spring using cae tools research journal of recent sciencesvol 1,292,96feb 2012. A threelayer composite leaf spring with full length leave made of eglassepoxy composite material has been used. It was found that the longitudinal orientations of fibers in the laminate offered good strength to the leaf spring. Static analysis of 3d model of conventional leaf spring is performed using analysis commercial software. Modeling was done for every leaf with eightnode 3d brick element solid 45 and fivenode 3d contact element contact 49 used to represent contact and sliding between adjacent surfaces of leaves. Spring rate every spring configuration has a spring rate, k,defined as slope of its forcedeflection curve. Also explore the seminar topics paper on design, analysis, fabrication and testing of a composite leaf spring with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical. International journal of engineering trends and technology. Sowjanya, design and analysis of automotive multi leaf spring using composite material. The suspension leaf spring is one of the potential items for weight reduction automobile as it fig.
And that dimensions are used for composite multi leaf spring as well by taking composites as carbonepoxy and graphiteepoxy. Design analysis and failure modes of leaf spring in suspension system yogesh nikam1, dr. By capturing the fundamentals of combining dissimilar materials and thus its equivalent modulus affects the overall stiffness characteristics of multi leaf design. Comparison of steel and composite leaf spring using ansys v17.
This system is aimed to improve vehicle performance on all terrain. The work presented in this paper provides alternate methods for fatigue life assessment of leaf springs. Reducing weight while increasing or maintaining strength of products is getting to be highly important research issue in this modern world. So, a stress analysis was performed using finite element method. The main point of the analysis study is to improve the quality of this design for a leaf spring with a longer life, and achieve a big reduction in vibration forces. We provide you with our newly remodeled spring calculator, spring creator v3. A file in pdf format which provides technical information regarding a certain tension spring design. The dimensions of an existing conventional steel leaf spring of a light. At the same time there is a need of high load carrying rear suspension to suit market requirement. Static and dynamic analysis of automobile leaf spring. Design and manufacture of an adaptive suspension system a major qualifying project report submitted to the faculty of worcester polytechnic institute this report represents the work of wpi undergraduate students submitted to the faculty as evidence of completion of a degree requirement.
A 65si7 light commercial vehicle leaf spring is chosen for this study. Camber is the perpendicular distance between the reference line and the master leaf and its magnitude is such that the spring is approximately straight under the max static load. The present paper deals with the design and analysis of composite leaf spring. Leaf spring design and engineering strength of materials. Multileaf spring and hotchkiss suspension cae simulation. Pdf design and analysis of leaf spring semantic scholar. The design process of the leaf spring is another aspect that can be optimized in order to improve the load carrying capacity and fatigue life of the spring. Literature survey alqureshi presented a general study on the analysis, design and fabrication of composite leaf spring.
Design and analysis of composite leaf spring free download as powerpoint presentation. Nonlinearity from large deformation, interleaf contact, and friction was included. Tension spring design pdf quality spring, affordable prices. Now the maximum bending stress of a leaf spring is given by the formula 14 bending stress. Which will indicate the speed at which a comfortable speed and safe drive is possible. Design of leaf springs mechanical engineering notes edurev.
Based on this, small reduced model is developed to make different iterations to design, cost effective rear axle with minimum time. Such alteration from the standard laminated leaf spring, does not change the stress value, but deflection equation requires some correction. It consists of a number of flat plates or leaves of semielliptical shape. Leaf spring design guidelines explained here is the simplest version of the whole leaf spring design procedure. Design and analysis of composite leaf spring suspension. Design, analysis, fabrication and testing of a composite leaf. Introduction leaf springs are mainly used in suspension systems to absorb shock loads in automobiles like light motor vehicles, heavy duty.
Mono composite leaf spring for light weight vehicle. Ubolts and center clip are used to hold these leaves together. Design procedure of the leaf spring in design procedure of leaf springs, firstly, the weight of vehicle is calculated. Tension spring design becomes a much easier task when it comes to designing your tension springs at acxess spring. Valve spring is a critical component for any engines performance. This work deals with replacement of conventional steel leaf spring with composite leaf spring.
Jeevan kumar 39 leaf springs are unique kind of springs used in abstract automobile suspension systems. Analysis and optimization of a composite leaf spring. Leaf spring is the main type of suspension system which is used in many light and heavy vehicles. Design and analysis of eglassepoxy composite monoleaf. Paszek performed a three dimensional contact analysis of the car leaf spring. Stresses and strains under different loads were analyzed. All the calculations were done using the version 5. Design, analysis and optimization of leaf spring open. In the cantilever beam type leaf spring, for the same leaf thickness, h, leaf of uniform width, b case 1 and, leaf of width, which is uniformly reducing from b case 2 is considered. In new light commercial vehicle development, engine is mounted at rear to have low engine noise and vibration inside cabin. Kevlarepoxy for light commercial vehicle leaf spring. Information in table 2 is not sufficient to design a composite leaf spring. Design of leaf spring a spring is defined as an elastic machine element, which deflects.
The dimensions of existing conventional steel leaf springs of a light commercial vehicle are taken and are verified by design calculations. The design constraints are stresses and deflections. Design and analysis of a leaf spring for automobile. Heavy loads leaf spring design in order to carry heavy loads a few more additional full length leaves are placed below the master leaf for heavy loads. First the static analysis is carried out for steel and different composite leaf spring using fe solver ansys v10. Proceedings of 105th the iier international conference, bangkok, thailand, 5th6th june 2017 102 design and analysis of leaf spring for solar vehicle 1may mya darli cho, 2htay htay win, 3aung ko latt 1,2,3 department of mechanical engineering, mandalay technological university, mandalay, myanmar email. To keep the leaves aligned and avoid lateral shifting, rebound clips are used. When spring rate varies with deflection, it is called a nonlinear springnonlinear spring. D in mechanical engineering,rscoe pune, india abstract this research paper shows some of the general study on the design, analysis and fabrication of. Leaf spring design guidelines laminated leaf spring design. Composite materials are one of the material families which are attracting researchers and being solutions of. Center of the spring is fixed to the axle of the automobile. Nowadays, cad and fea tools are used extensively in the industry for the design of leaf spring. It contains information which will make it possible to calculate the space required for a leaf spring, to provide suitable attachments, and to determine the elastic and geometric properties of the assembly.
Design and analysis of leaf spring for solar vehicle proceedings of 105th ththe iier international conference, bangkok, thailand, 5 6th june 2017 103 ii. The analysis has been conducted by using ansys12 software with the help of static structural tool. Comparison of steel and composite leaf springs using fea by. Leaf spring used in many vehicles due to having some main characteristics which are shown below. Semielliptical leaf spring is the most popular and widely used leaf spring. Design, analysis, fabrication and testing of a composite. Design and analysis of leaf spring o global journals. From the basic equations of bending stress and deflection, the maximum stress. Initially analysis is done with complete vehicle model of rear axle, spring, spring bushes, frame etc. Design and analysis of leaf spring global journals inc. The leaf spring was modeled in autocad 2012 and the analysis was done using ansys 9. This paper presents detailed finite element modeling and analysis of a twostage multi leaf spring, a leaf spring assembly, and a hotchkiss suspension using abaqus. In the finite element modeling, every leaf was modeled with eightnode 3d brick elements solid 45 and then fivenode 3d contact elements contact 49 were used to represent contact and. In this study all models are designed for factor of safety 3.
In this paper we describe design and analysis of composite leaf spring. This paper presents detailed finite element modeling and analysis of a twostage multileaf spring, a leaf spring assembly, and a hotchkiss suspension using abaqus. G scholar, mechanical engineering, ips college of technology management 2 hod, mechanical engineering, ips college of technology management, gwalior mp india email. The dimensions of an existing conventional steel leaf spring of a light design calculations. The engineers working in the field of leaf springs always face a challenge to formulate alternate methods of fatigue life assessment. Analysis to design composite leaf spring, a stress analysis was performed using the finite element method done using ansys software.
1586 367 226 1624 148 1268 1092 833 1521 911 520 552 259 722 1187 501 1355 622 338 1241 172 129 532 615 531 1401 900 275 311 1238 507 442 1367 505 866 280 407 448 1358 770 847 771 1027 399 617