کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
498658 863007 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Response variability of laminate composite plates due to spatially random material parameter
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Response variability of laminate composite plates due to spatially random material parameter
چکیده انگلیسی

Young’s modulus is at the center of attention in the stochastic finite element analysis since the parameter plays an important role in determining structural behavior. However, the other material parameter of Poisson’s ratio is another independent material parameter that governs the behavior of structural systems. Accordingly, the independent estimation of the influence of this parameter on the uncertain response of a system is of importance from the perspective of stochastic analysis. To this end, we propose a formulation to determine the response variability in laminated composite plates due to the spatial randomness of Poisson’s ratio. To filter out the independent contribution of random Poisson’s ratio, a decomposition of the constitutive matrix into several sub-matrices by using the Taylor’s expansion is needed, which makes the random Poisson’s ratio simple enough to be included in the formulation. To validate the adequacy of the proposed formulation, several examples are chosen and the results are compared with those given by Monte Carlo analysis. By means of the formulation suggested here, it is expected that an extension of the formulation to include the effect of correlations between random Poisson’s ratio and other structural and/or geometrical parameters will be achieved with ease, resulting in a more practical estimation of the response variability of laminated composite plates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 200, Issues 29–32, 1 July 2011, Pages 2397–2406
نویسندگان
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