Elastomeric Component Fatigue Analysis: Rubber Fatigue Prediction and Correlation Comparing Crack Initiation and Crack Growth Methodologies

Zarrin‐Ghalami, Touhid; Datta, Sandip; Keinti, Robert Bodombo; Chandrashekar, R.

doi:10.4271/2020-01-0193

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…Saintier et al [10] employed the equivalent stress to calculate fatigue damage. Mars and coworkers [11][12][13], Xu et al [14] and Zarrin-Ghalami et al [15] used CED (Cracking Energy Density) to assess the fatigue life of rubber components. Strain-based failure criteria were utilised for fatigue prediction by Zerrin-Ghalami and Fatemi [16], Belkhiria et al [17] and Zarrin-Ghalami [18].…”

Section: Introductionmentioning

confidence: 99%

“…Shangguan and coworkers [19,20] compared several damage criteria to an industrial rubber product and found that stress-based parameters achieved higher accuracy than strainbased and energy-based ones. Nyaaba et al [21], Zarrin-Ghalami et al [15], Chung and Kim [22], Lu et al [23], used the critical plane method to obtain the maximum damage from their criteria. This searching Effective strain criterion under multimode and multiaxial loadings -A rubber S-N curve with the scatter-band factor of 1.6 from 90 fatigue cases approach is effective in a proportional loading case.…”

Section: Introductionmentioning

confidence: 99%

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Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

Luo¹

2022

Express Polym. Lett.

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The effective strain criterion, unifying multimode and multiaxial loadings to a single parameter and being expressed in analytical form with no need to rotate a plane to search the maximum damage parameter, is proposed for the fatigue design of anti-vibration components. The validation procedure was performed on 90 cases in two aspects: fatigue damage and crack orientation. All predicted fatigue cracks were located at the places where the effective strain reached its maximum and was consistent with the experimental observations. The failure planes predicted correlated with the experimental measurement. The S-N curve covered over 10 2 to 2.4•10 6 cycles and achieved high accuracy with the scatter-band of 1.8. The proposed approach was applied to two non-proportional loading cases (one in a phase angle 45° and the other in a phase angle 90°). The results seemed to indicate the suitability of the approach for the non-proportional loading calculations. It would be possible to combine the proposed approach with the critical plane method in non-proportional loadings: using the proposed approach to find the critical loading range and then using the critical plane method to determine the maximum values of the required damage variables. Both the proposed concept and the obtained S-N curve would be beneficial in rubber fatigue design. More engineering cases may be needed to verify this approach further.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

Luo¹

2022

Express Polym. Lett.

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“…A powerful computer is usually required to use this approach. Mars et al [1][2][3] , Xu, 4 and Zarrin-ghalami 5 et al applied CED (Cracking Energy Density) to evaluate rubber fatigue using the critical plane method. The minimum configurational stress was proposed by Verron 6 and was adopted by Cam et al 7 to assess fatigue damage.…”

Section: Introductionmentioning

confidence: 99%

Strain‐based fatigue criterion for rubber damage under multimode loadings

Luo

2022

J of Applied Polymer Sci

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An accurate prediction of the fatigue life of a rubber product is based on a criterion. Since strain can be measured directly in rubber components during a test, it would help design engineers improve product performance effectively if the strain‐based damage criteria can achieve high accuracy. Hence, the experimental data on the AE42 and AE2 specimens were utilized to test the suitability of the proposed damage criterion for rubber materials. The criterion includes three principal components determined by both a strain range and a current strain. Data from AE42 specimens, made from styrene‐butadiene rubber, contained 40 cases, that is, tension, torsion, and tension‐torsion loadings. An S‐N curve was obtained, with a scatter band of 0.7 and a coefficient of determination R2 of 0.81. The curve could be useful at the design stage. A sample of AE2, made from natural rubber filled with carbon black, showed the location and orientation of the crack in a nonproportional case. The predicted location of the fatigue crack was consistent with the experimental observation and the crack orientation matched the experimental measurement, that is, the predicted angle of 33.4° versus the measurement of approximately 40°. It would be possible to combine the proposed approach with the critical plane method in nonproportional loadings to save significant CPU time: using the proposed approach to find the critical loading range and then using the critical plane method to find the maximum value of the required damage variables. More engineering cases are needed to further verify this proposed criterion.

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Fatigue Life Prediction and Correlation of Engine Mount Elastomeric Bushing using A Crack Growth Approach

Elango¹,

Pandi²,

Mahadule³

et al. 2022

SAE Technical Paper Series

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Elastomeric Component Fatigue Analysis: Rubber Fatigue Prediction and Correlation Comparing Crack Initiation and Crack Growth Methodologies

Cited by 4 publications

References 24 publications

Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

Effective strain criterion under multimode and multiaxial loadings – A rubber S–N curve with the scatter-band factor of 1.6 from 90 fatigue cases

Strain‐based fatigue criterion for rubber damage under multimode loadings

Fatigue Life Prediction and Correlation of Engine Mount Elastomeric Bushing using A Crack Growth Approach

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