کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8947029 1645544 2018 40 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive and off-line techniques for non-linear multiscale analysis
ترجمه فارسی عنوان
تکنیک های سازگار و غیر خطی برای تجزیه و تحلیل چند مقیاس غیر خطی
کلمات کلیدی
چند منظوره، چند فیزیک، بهینه سازی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This paper presents two procedures, based on the numerical multiscale theory, developed to predict the mechanical non-linear response of composite materials under monotonically increasing loads. Such procedures are designed with the objective of reducing the computational cost required in these types of analysis. Starting from virtual tests of the microscale, the solution of the macroscale structure via Classical First-Order Multiscale Method will be replaced by an interpolation of a discrete number of homogenized surfaces previously calculated. These surfaces describe the stress evolution of the microscale at fixed levels of an equivalent damage parameter (deq). The information required for these surfaces to conduct the analysis is stored in a Data Base using a json format. Of the two methods developed, the first one uses the pre-computed homogenized surface just to obtain the material non-linear threshold, and generates a Representative Volume Element (RVE) once the material point goes into the nonlinear range; the second method is completely off-line and is capable of describing the material linear and non-linear behavior just by using the discrete homogenized surfaces stored in the Data Base. After describing the two procedures developed, this manuscript provides two examples to validate the capabilities of the proposed methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 206, 15 December 2018, Pages 215-233
نویسندگان
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