Multiscale Extended Finite Element Method for Modeling Fracture Problem in Reissner-Mindlin Plates
Journal Title: 河南科技大学学报（自然科学版） - Year 2016, Vol 37, Issue 2
Abstract
A multiscale extended finite element method for Reissner-Mindlin plate with through crack was proposed. The standard displacement approximation space was enriched by the asymptotic bending singular function and the discontinuous function across the crack,hence the computation mesh was independent of the cracks. The fine-scale mesh was used around the cracks,whereas the coarse-scale mesh was used far from the cracks. Thus small cracks in the analysis of large structure were considered and the accuracy around the cracks was improved in the case of low calculation cost. The four-node quadrilateral plate element was used for any scale element,and the arbitrary-node quadrilateral plate element was used to connect elements with different scales. Stress intensity factors were evaluated with the interaction integral method. Examples were given to illustrate the accuracy and efficiency of the proposed method.
Authors and Affiliations
Kai HU, Shuohui YIN
Keywords
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- DOI 10.15926/j.cnki.issn1672-6871.2016.02.003
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