کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
774647 1463088 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Path-independent integral in fracture mechanics of quasicrystals
ترجمه فارسی عنوان
انتگرال مستقل راه در مکانیک شکست شبیه سازها
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Coupled governing equations for phonon and phason displacements for quasicrystal.
• Conservation laws for quasicrystals to derive path-independent integrals for cracks.
• Path-independent integrals for evaluation of fracture parameters in quasicrystals.
• The Bak’s model for dynamic fracture study.

Path-independent integrals are successfully utilized for accurate evaluation of fracture parameters in crystalic materials, where atomic arrangement is periodic. In quasicrystals (QC) the atomic arrangement is quasiperiodic in one-, two- or three-directions. The 2-d elastic problem for quasicrystal is described by coupled governing equations for phonon and phason displacements. Conservation laws for quasicrystals are utilized to derive path-independent integrals for cracks. The relation between the energy release and stress intensity factor for a crack under the mode I is given for decagonal QCs. The path-independent integral formulation is valid also for cracks in QCs with continuously varying material properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 140, May 2015, Pages 61–71
نویسندگان
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