Structural Engineering and Mechanics

  • 제35권6호
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  • Pages.659-676
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  • 2010
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Development of new finite elements for fatigue life prediction in structural components

  • Tarar, Wasim (Department of Mechanical and Aerospace Engineering, The Ohio State University) ;
  • Scott-Emuakpor, Onome (Department of Mechanical and Aerospace Engineering, The Ohio State University) ;
  • Herman Shen, M.H. (Department of Mechanical and Aerospace Engineering, The Ohio State University)
  • 투고 : 2007.11.07
  • 심사 : 2007.02.24
  • 발행 : 2010.08.20
⟨ 이전 논문 다음 논문 ⟩

초록

An energy-based fatigue life prediction framework was previously developed by the authors for prediction of axial and bending fatigue life at various stress ratios. The framework for the prediction of fatigue life via energy analysis was based on a new constitutive law, which states the following: the amount of energy required to fracture a material is constant. In this study, the energy expressions that construct the new constitutive law are integrated into minimum potential energy formulation to develop new finite elements for uniaxial and bending fatigue life prediction. The comparison of finite element method (FEM) results to existing experimental fatigue data, verifies the new finite elements for fatigue life prediction. The final output of this finite element analysis is in the form of number of cycles to failure for each element in ascending or descending order. Therefore, the new finite element framework can provide the number of cycles to failure for each element in structural components. The performance of the fatigue finite elements is demonstrated by the fatigue life predictions from Al6061-T6 aluminum and Ti-6Al-4V. Results are compared with experimental results and analytical predictions.

키워드

참고문헌

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피인용 문헌

  1. A modified closed form energy-based framework for fatigue life assessment for aluminum 6061-T6: Strain range approach vol.25, pp.5, 2016, https://doi.org/10.1177/1056789516635726
  2. Strain Rate and Loading Waveform Effects on an Energy-Based Fatigue Life Prediction for AL6061-T6 vol.136, pp.2, 2013, https://doi.org/10.1115/1.4025497
  3. Prediction of Nonlinear Evolution of Fatigue Damage Accumulation From an Energy-Based Model vol.139, pp.7, 2017, https://doi.org/10.1115/1.4035401
  4. A Modified Closed Form Energy Based Framework for Fatigue Life Assessment for Aluminum 6061-T6-Damaging Energy Approach vol.137, pp.2, 2010, https://doi.org/10.1115/1.4029532
  5. Flexural fatigue modeling of short fibers/epoxy composites vol.64, pp.3, 2010, https://doi.org/10.12989/sem.2017.64.3.287
  6. The model analytical finite rod-type element for static and dynamic analysis vol.1425, pp.None, 2010, https://doi.org/10.1088/1742-6596/1425/1/012013