Static Design and Finite Element Analysis of Innovative CFRP Transverse Leaf Spring

Carello, Massimiliana; Airale, Andrea Giancarlo; Ferraris, Alessandro; Messana, Alessandro; Sisca, Lorenzo

doi:10.1007/s10443-017-9596-6

Cited by 22 publications

(9 citation statements)

References 12 publications

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“…Therefore, the design method and performance investigation of composite leaf springs are the research hotspots in the application field of composite structures. Joint reliability [5,6], structure design [7][8][9][10][11][12][13][14][15], ply design [16], stiffness calculation [17], optimization [18][19][20][21], performance investigation [22][23][24][25][26][27][28][29][30][31][32][33] and structural health monitoring [34][35][36][37][38] of composite mono leaf springs have been studied comprehensively and systematically. However, there are great differences in the requirements of suspension stiffness in some working conditions of automobile such as only the driver on the automobile, all the passengers plus the driver and the luggage on the automobile.…”

Section: Research Significance Of Composite Leaf Springs With a Mainmentioning

confidence: 99%

A theoretical model used for determining the stiffness of composite leaf springs with a main spring and an auxiliary spring

Qian

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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The stiffness characteristics of composite leaf springs with a main spring and an auxiliary spring directly affect the handling stability and riding comfort of automobiles and finally determine its application value. In order to achieve precise calculation for the stiffness characteristics of composite leaf springs with a main spring and an auxiliary spring, a theoretical model, which is verified by finite element simulation and related test results, was established by using the mechanics of composite materials and finite difference method. Then, the design parameters that influence the stiffness of the composite leaf spring with a main spring and an auxiliary spring were analyzed to provide a guide for the stiffness matching and optimization of this kind of composite leaf springs. The proposed theoretical model is suitable for parametric modeling and programming, which not only considers the detail features of the spring and the anisotropy of composite material, but also guarantees the speed and the accuracy of the calculation process. This paper also provides a new numerical method for calculating the stiffness of composite structures with arbitrary section shape or complex material composition.

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Section: Research Significance Of Composite Leaf Springs With a Mainmentioning

confidence: 99%

A theoretical model used for determining the stiffness of composite leaf springs with a main spring and an auxiliary spring

Qian

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…The design of spring body structure is one of the most important problems in the design theory of composite leaf spring, as the body structure primarily determines the weight, the stress distribution state, the shape of the mold cavity, and the ply scheme framework of the spring, and hence it directly affects the performance and the manufacturing cost of the composite leaf spring. Extensive efforts have been made on the structural design and optimization of the composite leaf spring body using genetic algorithm (GA) and FE approaches [22,25,[28][29][30][31][32][33]. Specifically, a GA was used to optimize the dimensions of a glass fiber-reinforced epoxy composite leaf spring with variable width, variable thickness, and equal cross-section.…”

Section: Introductionmentioning

confidence: 99%

Structure Design of GFRP Composite Leaf Spring: An Experimental and Finite Element Analysis

et al. 2021

Polymers

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Due to the high load-bearing capacity and light weight, composite leaf spring with variable width and variable thickness has been increasingly used in the automobile industry to replace the conventional steel leaf spring with a heavy weight. The optimum structural design of composite leaf spring is particularly favorable for the weight reduction. In this study, an effective algorithm is developed for structural optimization of composite leaf spring. The mechanical performance of composite leaf spring with designed dimensions is characterized using a combined experimental and computational approach. Specifically, the composite leaf spring with variable width and variable thickness was prepared using the filament winding process, and the three-dimensional finite element (FE) model of the designed composite leaf spring is developed. The experimental sample and FE model of composite leaf spring are tested under the three-point bending method. From experimental and simulation results, it is shown that the bending stiffness of the designed leaf spring meets the design requirement in the automotive industry, while the results of stress calculation along all directions meet the requirements of material strength requirement. The developed algorithm contributes to the design method for optimizing the stiffness and strength performance of the composite leaf spring.

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“…us, the application of advanced materials, like Carbon Fiber Reinforced Plastic (CFRP), to reduce suspension mass is becoming a common practice [3][4][5][6]. Lightweight materials can significantly change the NVH (Noise Vibration and Harshness) behavior of a component [7].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Vibration Reduction on Lightweight Lower Control Arm

Messana

Ferraris²,

Airale³

et al. 2020

Shock and Vibration

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This paper describes the design procedure to enhance the damping properties of a multimaterial lightweight suspension arm for a C-segment vehicle. An innovative viscoelastic material has been used to join carbon fiber with steel that has a function of passive constrained layer damper and adhesive simultaneously. Therefore, the hybrid technology applied has been focused on reducing the LCA mass, diminishing the steel thickness, and adding a CFRP tailored cover without compromising the global mechanical performance. Particular attention has been paid to the investigation of the dynamic response in terms of vibration reduction, especially in the range of structure-borne frequencies of 0–600 Hz. Two different viscoelastic materials have been evaluated in such a way to compare their stiffness, damping, and dynamic properties. The experimental test results have been virtually correlated with a commercial FEM code to create the respective material card and predict the real behavior of the LCAs (original and hybrid). The experimental modal analysis has been performed and compared on both the arms highlighting a very good correlation between virtual and experimental results. In particular, the hybrid LCA allows an interesting improvement of damping ratio, about 3,5 times higher for each eigenmode than in the original solution.

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Static Design and Finite Element Analysis of Innovative CFRP Transverse Leaf Spring

Cited by 22 publications

References 12 publications

A theoretical model used for determining the stiffness of composite leaf springs with a main spring and an auxiliary spring

A theoretical model used for determining the stiffness of composite leaf springs with a main spring and an auxiliary spring

Structure Design of GFRP Composite Leaf Spring: An Experimental and Finite Element Analysis

Enhancing Vibration Reduction on Lightweight Lower Control Arm

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