کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10620240 988604 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two-step homogenization simulation for multidomain and multigrain structures in piezoelectric materials
ترجمه فارسی عنوان
شبیه سازی همگن دو مرحله ای برای ساختارهای چند منظوره و چند قطبی در مواد پیزوالکتریک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
In this paper, a two-step scale-up procedure based on asymptotic homogenization theory is proposed for hierarchical structures consisting of multigrains and multidomains in piezoelectric materials. Intragranular domains are modeled as a microstructure during the first-step homogenization. Then, in the second-step homogenization, an aggregate of randomly oriented grains is modeled by applying the first-step homogenized material properties of multidomains to every grain. A dual-domain structure consisting of positive and negative directional domains with a 180° orientation gap is computed for case study analysis. The three-dimensional electron backscatter diffraction-measured microstructure is employed for the multigrain structure. The effect of the domain configuration on the macroscopic homogenized material properties of polycrystalline piezoelectric materials is investigated through the two-step homogenization process. In particular, the material property changes caused by the piezoelectric effect, which cannot be estimated by the mixture law, are discussed for multigrain and multidomain structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 61, Issue 19, November 2013, Pages 7304-7312
نویسندگان
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