کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
825094 1470010 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The challenge of achieving hygrothermal stability in composite laminates with optimal couplings
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
The challenge of achieving hygrothermal stability in composite laminates with optimal couplings
چکیده انگلیسی

The necessary and sufficient conditions for hygrothermal curvature stability of composite laminates have been derived previously, and their development is summarized in this work. These conditions are shown to be material independent. A constrained optimization routine is implemented to arrive at hygrothermally stable stacking sequences that are optimal for each of bend-twist and extension-twist coupling. The necessary and sufficient conditions for hygrothermal stability are used as constraints, while the compliance coefficients from classical lamination Theory are used as the objective functions. Both sequential quadratic programming and ant-colony optimization routines are used to ensure global optimality. Laminates consisting of two through ten plies are considered. Laminates consisting of five through ten plies are manufactured and tested to demonstrate the achievable level of extension-twist or bend twist coupling. A geometrically nonlinear model is presented to predict the response of bend-twist-coupled laminates. Comparison with the previous state-of-the-art stacking sequence for achieving extension-twist coupling with hygrothermal stability demonstrates a nearly 80% increase in the level of coupling.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Engineering Science - Volume 59, October 2012, Pages 74–82
نویسندگان
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