Fatigue life analysis of laminated elastomeric bearing pad

Mohamedmeki, Mohammed Zuhair; Esmail, F. Jihan; Ajeel, Awadh E.

doi:10.1016/j.matpr.2020.12.328

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…In this study, we used the James-Green-Simpson [47] Equation ( 7) and the Yamashita [22] Equation (8) in this expansion formula. Ogden [23] also proposed Equation ( 9) as an approximate formula.…”

Section: Strain Energy Density Function (W) [46]mentioning

confidence: 99%

“…In Japan, the largest number of researchers and engineers use the Ogden Equation ( 9), followed by those who use the Mooney-Rivlin Equation (6). Some of the model equations that have been improved on these models are Equations ( 7) and (8). Principal stress σ x can be determined by differentiating strain energy by strain.…”

Section: Strain Energy Density Function (W) [46]mentioning

confidence: 99%

“…CAE analysis has become indispensable for the development and design of new products [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. Abaqus and Marc are well-known analytical software programs, but recently Ansys and Nastran have also become popular.…”

Section: Introductionmentioning

confidence: 99%

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Calculation of Strain Energy Density Function Using Ogden Model and Mooney–Rivlin Model Based on Biaxial Elongation Experiments of Silicone Rubber

2023

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Strain energy density functions are used in CAE analysis of hyperelastic materials such as rubber and elastomers. This function can originally be obtained only by experiments using biaxial deformation, but the difficulty of such experiments has made it almost impossible to put the function to practical use. Furthermore, it has been unclear how to introduce the strain energy density function necessary for CAE analysis from the results of biaxial deformation experiments on rubber. In this study, parameters of the Ogden and Mooney–Rivlin approximations of the strain energy density function were derived from the results of biaxial deformation experiments on silicone rubber, and their validity was verified. These results showed that it is best to determine the coefficients of the approximate equations for the strain energy density function after 10 cycles of repeated elongation of rubber in an equal biaxial deformation state, followed by equal biaxial elongation, uniaxial constrained biaxial elongation, and uniaxial elongation to obtain these three stress–strain curves.

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Section: Strain Energy Density Function (W) [46]mentioning

confidence: 99%

Section: Strain Energy Density Function (W) [46]mentioning

confidence: 99%

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Calculation of Strain Energy Density Function Using Ogden Model and Mooney–Rivlin Model Based on Biaxial Elongation Experiments of Silicone Rubber

2023

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“…4 Qin et al 5 used ANSYS Parametric Design Language (APDL) to analyze the stiffness and stresses of elastomeric bearings with different characteristic parameters and found the optimal characteristic parameters for elastomeric bearing design based on the results. Mohamedmeki et al 6 provided the fatigue analysis of elastomeric bearing pads under compressive loads, and studied the relation among load, load frequencies, and fatigue lifetime through ABAQUS software and Fe-Safe tool. Kazeminezhad et al 7 investigated the vertical stiffness of elastomeric bearings in the presence of rotation and lateral displacement using the finite element method (FEM).…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis on strength and durability of spherical laminated elastomeric bearings

Liangqing,

Ruiqian,

Yihan

et al. 2023

Composites and Advanced Materials

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Elastomeric bearings consist of alternating rubber and metal spacer layers bonded via vulcanization technique. As important structural components in aerospace and bridge construction as well as other industries, the reliability of elastomeric bearings has a significant impact on the safety of the whole system. In this work, the finite element method is used to study the stress and displacement distributions of spherical laminated elastomeric bearings during helicopter flight, and then the theory of cumulative fatigue damage is used to analyze the fatigue lifetime of the bearing. By means of the comparative analysis of six single-load cases and a multiple-load case of the bearing categorized from the viewpoint of helicopter flight characteristics, the main influencing factors and how they affect the stress and displacement distributions are revealed. Finally, a durability test is conducted and the experimental results are well consistent with the calculated results, which indicates the prediction accuracy of the model. The work would be beneficial to the optimal design and reliable service of elastomeric bearings.

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“…Fabio and Mirko [24] proposed an integrated nonlinear model of HDRB, including the cavitation of elastomers and post-cavitation. Mohammedmeki et al [25] developed a three-dimensional model of steel-stacked bearing pads under various designated loads and constructed an experimental load-strain curve using the Ogden model, one of the built-in constituent models in ABAQUS software. Guojun et al [26] investigated the mechanical properties (shortened final bearing capacity, failure mode) and reliability of the RSPB junction and studied the out-of-plane rotation performance using eight finite models.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis for Multi-Layered Elastomeric Bearing on Rotor Hub Considering Large Axial Load and Nonlinear Motion

Jang,

Ahn

2023

Applied Sciences

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This paper examines the initial sizing theory of elastomeric bearings. In addition, the manufacturing process of the elastomeric bearing was analyzed to define the essential contents necessary to manufacture reliable elastomeric bearings. Mooney-Rivlin parameters were presented based on the test results to predict the characteristics of metal materials and rubber stacked. Mooney-Rivlin parameters were inputted to determine whether the structure was abnormal, by constructing a finite element model for the elastomeric bearing. A modeling technique was established to meet the structural rigidity and strength requirements of full elastomeric bearings, critical components of the helicopter main rotor system. In addition, the flight situation in which the maximum load of an actual helicopter equipped with an elastomeric bearing can be applied was selected, and linear structural analysis and nonlinear analysis were performed to confirm the behavior of the elastomeric bearing. As a result of performing linear static analysis, a negative margin was generated, but when nonlinear analysis was performed again, it was confirmed that there was a sufficient safety margin. It was shown that design reliability for the molding and manufacturing process of elastomeric bearings could be improved in terms of strength.

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Fatigue life analysis of laminated elastomeric bearing pad

Cited by 8 publications

References 17 publications

Calculation of Strain Energy Density Function Using Ogden Model and Mooney–Rivlin Model Based on Biaxial Elongation Experiments of Silicone Rubber

Calculation of Strain Energy Density Function Using Ogden Model and Mooney–Rivlin Model Based on Biaxial Elongation Experiments of Silicone Rubber

Finite element analysis on strength and durability of spherical laminated elastomeric bearings

Design and Analysis for Multi-Layered Elastomeric Bearing on Rotor Hub Considering Large Axial Load and Nonlinear Motion

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