Continuum damage mechanics modeling for fatigue life of elastomeric materials

Aidy Ali; Maryam Hosseini; Barkawi Sahari

doi:10.1108/17579861011023801

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International Journal of Structural Integrity

ISSN: 1757-9864

Online from: 2010

Subject Area: Mechanical & Materials Engineering

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Continuum damage mechanics modeling for fatigue life of elastomeric materials

Document Information:
Title:	Continuum damage mechanics modeling for fatigue life of elastomeric materials
Author(s):	Aidy Ali, (Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia), Maryam Hosseini, (Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia), Barkawi Sahari, (Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Malaysia)
Citation:	Aidy Ali, Maryam Hosseini, Barkawi Sahari, (2010) "Continuum damage mechanics modeling for fatigue life of elastomeric materials", International Journal of Structural Integrity, Vol. 1 Iss: 1, pp.63 - 72
Keywords:	Elastomers, Fatigue, Modelling, Rubbers
Article type:	Research paper
DOI:	10.1108/17579861011023801 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Acknowledgements:	The authors acknowledge the Malaysian Rubber Board for providing rubber materials, dumb-bell test specimens and supporting experiments for this paper. The authors thank the Department of Mechanical Engineering, International Islamic University Malaysia for supporting this research through permission to use the fatigue test machine in their laboratory. All of this supports is highly appreciated.
Abstract:	Purpose – The purpose of this paper is to investigate the fatigue behavior of rubber using dumb-bell test specimens under uniaxial loading. Design/methodology/approach – The material used is a vulcanized natural rubber with a formulation typical for engine mounts and an international rubber hardness degree of 60. Fatigue tests are conducted under the displacement controlled condition with a sine waveform of 0.1?Hz and the load ratio of zero. Findings – In modeling fatigue damage behavior, a continuum damage model is presented based on the function of the strain range under cyclic loading. The Ogden strain energy potential is used to define the constitutive relation of the natural rubber. A good agreement is obtained between fatigue experimental data and theoretical predictions. Originality/value – Fatigue analysis and lifetime evaluation are very important in design to ensure the safety and reliability of rubber components. The design of rubber against fatigue failure is an important topic that must be considered for safety during operation.