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🔗 Source: stanford.edu
📊 Size: 613 KB
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The assumed enhanced strain (AES) and extended finite element methods are two techniques used to enhance finite element interpolation, particularly for problems involving cohesive-frictional cracks. The AES method employs a piecewise constant interpolation of slip that is discontinuous across element boundaries, while the extended finite element method interpolates slip continuously across element boundaries. The AES method is suited for continuum strain localization problems, whereas the extended finite element method is more suitable for opening mode fractures. The paper compares and contrasts the finite element approximations involved in these techniques and discusses their implications on the calculated overall deformation field. Numerical examples demonstrate that the AES method predicts larger slip compared to the extended finite element solution, which is attributed to the lack of higher-order crack tip enhancement in the extended finite element solution.

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The assumed enhanced strain (AES) and extended finite element methods are two techniques used to enhance finite element interpolation, particularly for...

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  • File Format: PDF
  • File Size: 613 KB
  • Pages: 15
  • Language: EN
  • Total Downloads: 434
  • Last Updated: 3 weeks ago

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