Comparative Analysis of Helical Steel Springs with Composite Springs using Finite Element Method

Conference Paper (PDF Available) · August 2016with 113 Reads
Conference: eTIME-2016, At Department of Mechanical Engineering, SJEC, MANGLAORE
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Abstract
In automobile sector due to the demanding need of rapid innovation and tough competition, the old products are reengineered by new product with composite materials. Regularly new innovations are carried out in suspension area of vehicles. Fiber Reinforced Material [FRP] components are the main interest of automobile industry for replacing the steel components due to “high strength to low weight” ratio. To reduce the weight and fuel consumption to some extent, automobile industries are using the Glass Fiber Reinforced Plastic [GFRP] open coil springs in suspension system of vehicle at the place of steel open coil springs. In this research, the properties of composite and steel helical spring are compared and the deciding factor is the stiffness to weight ratio. Spring geometry is modeled in CREO Software on other hand Finite Element method is used to analyze under different loading condition. Finally, steel spring has been replaced by two different composite helical spring including Carbon and Kevlar.
eTIME-2016 : 5th and 6th August 2016 Department of Mechanical Engineering
St Joseph Engineering College
-
Vamanjoor,Mangaluru
Page
25
installation, etc. The faults related to bearing do not cause immediate breakdown, they
progress with the time until they result in a critical failure of the machine. With the help
of advanced diagnosis methods, it is possible to detect these faults in their early phase,
before they result in catastrophic failure of the machine. Condition monitoring is one such
technique which plays a vital role in providing higher availability of plant machinery by
detecting problems before they result in a major breakdown. It is the process of
monitoring a parameter of condition in machinery, such that a significant change is
indicative of a developing failure. Analysis of the parameter for ongoing deterioration
will help in taking suitable measures to avoid further deterioration. Vibration analysis is
the most commonly used condition monitoring technique. Comparison of the
vibration spectra of new equipment with the standards will provide the information
required to make a decision when maintenance intervention is required. This work
involves the application of condition monitoring technique (Vibration analysis) on the
antifriction bearings of a critical machine in the CNC manufacturing unit located in
Karnataka state.
Keywords Antifriction bearings, condition monitoring, vibration analysis, catastrophic,
bearing failure.
Comparative Analysis of Helical Steel Springs with Composite Springs using Finite
Element Method
Anil Antony Sequeira1, Ram Kishan Singh2, Ganesh K Shetti3
1School of Engineering & IT, Manipal University Dubai Campus, Dubai, 345050, U.A.E.
(Assistant Professor)
2School of Engineering & IT, Manipal University Dubai Campus, Dubai, 345050, U.A.E.
(M.Tech Student)
3School of Engineering & IT, Manipal University Dubai Campus, Dubai, 345050, U.A.E.
(M.Tech Student)
Abstract In automobile sector due to the demanding need of rapid innovation and tough
competition, the old products are reengineered by new product with composite materials.
Regularly new innovations are carried out in suspension area of vehicles. Fiber
Reinforced Material [FRP] components are the main interest of automobile industry for
replacing the steel components due to “high strength to low weight” ratio. To reduce the
weight and fuel consumption to some extent, automobile industries are using the Glass
Fiber Reinforced Plastic [GFRP] open coil springs in suspension system of vehicle at the
place of steel open coil springs. In this research, the properties of composite and steel
helical spring are compared and the deciding factor is the stiffness to weight ratio. Spring
geometry is modeled in CREO Software on other hand Finite Element method is used to
analyze under different loading condition. Finally, steel spring has been replaced by two
different composite helical spring including Carbon and Kevlar.
Keywords Helical spring, Composite spring, ANSYS work bench, Carbon and Kevlar
  • Article
    Full-text available
    In order to successfully reduce the weight of a helical spring it is possible to optimize the material parameters or to use alternative advanced materials instead of conventional engineering ones. Springs are used for vibration damping in mechanical systems and are generally made of steel. As an alternative to material of steel springs in the scope of the study, mechanical behaviors of fiber reinforced polymer (FRP) composite helical springs have been investigated. The FRP composite material has made it possible to reduce the weight of helical spring without any reduction on load carrying capacity. Due to increasing competition and innovation in recent decades, vehicle industries show interest in replacing conventional steel spring with FRP composite helical spring which has advantages such as higher strength to weight ratio, higher stiffness, high impact energy absorption and lesser stresses. The study gives the brief look on the suitability of FRP composite helical springs on related mechanical systems. The objective of the present work is evaluation of the design, analysis and fabrication of FRP composite helical springs.
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