Fatigue life estimation of an engine rubber mount

Kim, W.D.; Lee, H.J.; Kim, J.Y.; Koh, Seung Kee

doi:10.1016/j.ijfatigue.2003.08.025

Cited by 91 publications

(60 citation statements)

References 10 publications

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“…Abraham [5] found that maximum stress was the key to fatigue life during studied strain non crystalline rubber fatigue, but could not completely characterize fatigue life. Kim et al [17] carry out uniaxial fatigue test of the dumbbell type rubber components, use maximum Lagrange strain fitted the data of fatigue life. They used finite element method, obtained fatigue life and maximum Green-Lagrange strain predict formula by using the dumbbell rubber column test.…”

Section: Current Status Of Uniaxial Load Fatiguementioning

confidence: 99%

Overview of Experimental Studies on Strength Problem of Rubber Material

Zhang¹,

Zhao²

2015

Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology

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Abstract：The mechanical properties of rubber materials are complex, and the strength problem is getting more and more attention. This paper summarizes the research status of mechanics experiment of rubber materials under dynamic and static load, commented recent years domestic and foreign the progress on the field of rubber uniaxial and multiaxial fatigue. Introduced strength problem research under quasi static load of commonly used constitutive model, selection of constitutive model and determination of parameters status, pointed out the exist problems in experimental study of rubber materials strength.

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Section: Current Status Of Uniaxial Load Fatiguementioning

confidence: 99%

Overview of Experimental Studies on Strength Problem of Rubber Material

Zhang¹,

Zhao²

2015

Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology

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“…Compressive sinusoidal displacements of constant amplitudes are imposed on the isolators at a frequency of 3 Hz. The fatigue life of rubber materials is usually detected using the fracture of a dumbbell-type specimen, stiffness reduction or load-carrying capacity reduction (Woo et al, 2004;Kim et al, 2004;Kim and Jeong, 2005). In this study, the fatigue life of the isolator is defined as the number of cycles where the load-carrying capacity of the isolator is reduced by 60% compared to the initial load-carrying capacity.…”

Section: S-n Curvementioning

confidence: 99%

“…Kim et al (2004) developed the fatigue lifetime prediction method and applied it to engine rubber mounts by incorporating finite element analysis with material characterization of the rubber and the determination of fatigue damage parameters from fatigue tests. Mars and Fatemi (2004) broadly classified the factors that influence the fatigue life of rubber as related to the mechanical loading history, environmental conditions, formulation of the rubber compound and certain aspects of the stress-strain constitutive behavior.…”

Section: Introductionmentioning

confidence: 99%

Shape optimization of rubber isolators in automotive cooling modules for the maximization of vibration isolation and fatigue life

Park

Shim

Choi

et al. 2011

Int.J Automot. Technol.

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Rubber isolators are mounted between a cooling module and a carrier to isolate the car body from vibration due to the rotation of the cooling fan. The isolators should be durable against fatigue loads originating from fan rotation and road disturbance. Thus, the design of rubber isolators is required to maximize both vibration isolation and fatigue life. In this study, the shapes of the rubber isolators are optimally designed using a process integration and design optimization (PIDO) tool that integrates the various computer-aided engineering (CAE) tools necessary for vibration and fatigue analyses, automates the analysis procedure and optimizes the design solution. In this study, we use CAE models correlated to the experimental results. A regression-based sequential approximate optimizer incorporating Process Integration, Automation and Optimization (PIAnO), a commercial PIDO tool, is employed to handle numerically noisy responses with respect to the variation in design variables. Using the analysis and design procedure established in this study, we successfully obtained the optimal shapes of the rubber isolators in two different cooling modules; these shapes clearly have better vibration isolation capability and fatigue lives than those of the baseline designs used in industry.

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“…The comparisons showed that the estimated fatigue lives of the component were similar in terms of the maximum engineering strain, strain energy density and cracking energy density. Kima et al 17 performed nonlinear finite element analyses of a threedimensional dumbbell-shaped specimen and an engine 22 proposed two additional variables to modify an energy function so that it was able to capture both the observed softening and the residual strain response. This approach has been adopted in the commercial software Abaqus.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of stress softening of the rubber suspension used on rail vehicles

Luo

Mortel

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part F:

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In the rail industry, the important design parameters of rubber suspension systems are currently solely based on the loading part of the loading/unloading history, e.g. the load-deflection characteristics and fatigue requirement. Different energy levels and stress values are created for an identical load value during loading and unloading cycles in rubber-like materials. Hence, the performance of a rubber suspension can be substantially different during loading and unloading, which can lead to unexpected effects. An engineering approach is proposed to account for this so-called Mullins effect. Existing elastomeric models, widely used in rail vehicle design, can be modified to account for the unloading using this methodology. A typical rubber-to-metal bonded component, which is used in rail suspension systems, is selected for a verification study. It is shown that the predictions from the new approach are consistent with the results of the whole load/deflection history obtained in a laboratory experiment. In addition, if the unloading characteristics are not considered, results obtained from stress calculations can have a 20% margin of error. The proposed approach should be further verified using other types of rubber suspension systems.

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Fatigue life estimation of an engine rubber mount

Cited by 91 publications

References 10 publications

Overview of Experimental Studies on Strength Problem of Rubber Material

Overview of Experimental Studies on Strength Problem of Rubber Material

Shape optimization of rubber isolators in automotive cooling modules for the maximization of vibration isolation and fatigue life

Evaluation of stress softening of the rubber suspension used on rail vehicles

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