Composite integrated rear suspension

Morris, Cathy

doi:10.1016/0263-8223(86)90005-x

Cited by 44 publications

(16 citation statements)

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“…Yu ve Kim (1988), geliştirdikleri cam fiber/epoksi kompozitiyle, fazla katlı yaprak yay yerine kat sayısında azalma sağlayarak, kompozit yayın ağırlığının (8.44 kg)'dan, (2.3 kg)'a inmesini başarmışlardır. Morris (1986), Ford araçlarda yaprak yay yerleşiminin enlemesine olmasını sağlayan yayla, helezon ve süspansiyon kollarının ortadan kaldırılmasını gerçekleştirmiştir. Çalışmanın amacı; kompozit malzemelerin yaprak yay elemanı olarak kullanılabilirliğinin incelenmesi olup, sabit yük altında artan yaprak sayısına bağlı olarak, kompozit malzemenin yay katsayısı değişimine grafiksel olarak ulaşmaktır.…”

Section: Introductionunclassified

Usage of Composite Materials As Leaf Spring Component

Poyraz¹

2017

AKU-J. Sci. Eng.

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ÖzetBu çalışmada çelik yaprak yaylara alternatif olabilecek kompozit malzemenin, yaprak yay elemanı olarak kullanılması incelenmiştir. Yay malzemesi olarak, kompozit cam elyaf-epoksi malzeme seçilmiştir. Üretilen ve standartlarına göre kesilen kompozit malzemenin mekanik özelliklerine çekme, basma ve üç nokta eğilme deneyleriyle ulaşılmıştır. Cam elyaf-epoksi malzeme için fiber yönündeki ve fibere dik yöndeki çekme mukavemetine, basma mukavemetine, elastisite modülüne, kayma mukavemetine, kayma modülüne, poisson oranına, eğilme emniyet gerilmesine ve eğilme elastisite modülüne ulaşılmıştır. Kompozit malzemeden prototip bir yaprak yay boyutlandırması yapılmış, her bir yaprağı (8) tabakalı olan, (0˚) elyaf yönlenmeli ve (6) katlı prototip bir yaprak yay imal edilmiştir. Yaprak yayda (n=1'den, n=6'ya kadar) artan yaprak sayısıyla, (P=9.81 N'luk) yük altındaki teorik ve deneysel çökme, gerilme ve yay katsayıları hesaplanmıştır. Böylece artan yaprak sayısı ile yay katsayısı değişim grafiği, artan tabaka sayısı ile maksimum deneysel ve analitik olarak elde edilen gerilmelerin değişim grafiği çizilmiştir. Tasarlanan bu yaprak yay, üç boyutlu sonlu elemanlar yöntemi kullanılarak modellenmiştir. ANSYS programında yayın statik analizi yapılmıştır. Sonlu elamanlar modelinde SOLID 46 elemanı kullanılmıştır. (6) yapraklı yay için, (180 N) yük altında ANSYS programıyla modelleme sonucunda uzunluk ve kalınlık boyunca gerilme dağılımlarına, uzunluk boyunca meydana gelen çökmenin dağılımına ulaşılmış ve grafiklerden de çökme ve gerilme dağılımlarına bakıldığında, analitik ve deneysel sonuçların, sonlu elemanlar modeli ile yapılan numerik analizin sonuçlarının birbiriyle uyuştuğu görülmüştür. Usage of Composite Materials As Leaf Spring ComponentKeywords "Composite Leaf Spring"; "Theorical and Experimantal TensionCompression" AbstractIn this study, composite material, which may be an alternative to the steel leaf springs, was examined as using leaf spring element. The composite glass fiber-epoxy material is chosen to be used as the spring material. Glass fiber epoxy material is produced and cut according to standarts. The mechanical properties; tensile strength, compression and flexure tests are conducted. The values of tensile strength, compressive strength, modulus of elasticity, shear strength, shear modulus and poisson's ratio in the fiber and in the direction perpendicular to the fiber has been reached. Dimensions are determined to make a prototype of a leaf spring. The prototype composed of glass fiber epoxy composite has six layers and each of these layers consist of eight zero degree fiber orientational plates. Both theoretical and experimental compression, tensile and spring coefficients are calculated under P=9,81 N force with gradually increasing leaf numbers from 1 to 6. Leaf number-spring coefficient and leaf number-maximum experimental and analitical tensile strength graphs are presented. The spring designed with six leaves is modelled using 3D finite element analysis method. Statical analysis are carried out by the ...

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Section: Introductionunclassified

Usage of Composite Materials As Leaf Spring Component

Poyraz¹

2017

AKU-J. Sci. Eng.

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“…Chang-Hsuan Chiuet.al [3] investigated the mechanical behaviors of four different types of helical composite springs such as unidirectional laminates (AU), rubber core unidirectional (UR), unidirectional laminates with a braided outer layer (BU) and rubber core unidirectional laminates with a braided outer layer (BUR). C. J. Morris [4]developed composite integrated rear suspension leaf spring using FRP material. C. K. Soet.al [5] carried out a study to determine the static mechanical behavior of composite cylindrical springs.…”

Section: Introductionmentioning

confidence: 99%

Investigation on design and fabrication of continuous fiber reinforced composite helical spring for automobile suspension

Ekanthappa

Basavarajappa

Sogalad

2013

National Conference on Challenges in Research &Amp; Technology in the Coming Decades (CRT 2013)

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Spring is an elastic body whose function is to store energy when deflected by force and return equivalent amount of energy on being released. Helical compression springs are widely used for suspension in light vehicle and locomotives worldwide. Automobile manufacturer are looking for replacing existing metal spring by composite spring due to its high strength to weight ratio. In this study the design parameters indicate that there is considerable weight saving is possible and increase the stiffness of the spring by reducing the number of coils and increasing the area of the spring. The filament winding technique is used to fabricate the continuous fiber reinforced composite helical spring. The weight of the composite spring obtained is 42.63 % less than the conventional metal spring. Stiffness of the composite spring is 43.76% less compared to conventional metal spring. Even though stiffness of the composite helical spring is less when compared to conventional metal spring, the spring is designed with less number of coils to increase the stiffness without sacrifice the strength or load carrying capacity of the spring.

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“…Breadmore [1,2] studied the application of composite structures for automobiles. Moris [3] concentrated on using composites in the rear suspension system. Daugherty [4] studied the application of composite leaf spring in heavy trucks.…”

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of a composite leaf spring

Shokrieh

Rezaei

2003

Composite Structures

146

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A four-leaf steel spring used in the rear suspension system of light vehicles is analyzed using ANSYS V5.4 software. The finite element results showing stresses and deflections verified the existing analytical and experimental solutions. Using the results of the steel leaf spring, a composite one made from fiberglass with epoxy resin is designed and optimized using ANSYS. Main consideration is given to the optimization of the spring geometry. The objective was to obtain a spring with minimum weight that is capable of carrying given static external forces without failure. The design constraints were stresses (Tsai-Wu failure criterion) and displacements. The results showed that an optimum spring width decreases hyperbolically and the thickness increases linearly from the spring eyes towards the axle seat. Compared to the steel spring, the optimized composite spring has stresses that are much lower, the natural frequency is higher and the spring weight without eye units is nearly 80% lower.

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Composite integrated rear suspension

Cited by 44 publications

References 0 publications

Usage of Composite Materials As Leaf Spring Component

Usage of Composite Materials As Leaf Spring Component

Investigation on design and fabrication of continuous fiber reinforced composite helical spring for automobile suspension

Analysis and optimization of a composite leaf spring

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