کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7214456 | 1469464 | 2018 | 49 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anisotropic meanfield modeling of debonding and matrix damage in SMC composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Anisotropic meanfield modeling of debonding and matrix damage in SMC composites Anisotropic meanfield modeling of debonding and matrix damage in SMC composites](/preview/png/7214456.png)
چکیده انگلیسی
This paper presents an anisotropic, micromechanical damage model for sheet molding compound (SMC) composites, that is a thermoset matrix reinforced with long (â25mm) glass fibers. The model captures the dominant damage mechanisms - matrix damage and fiber-matrix interface debonding - in a Mori-Tanaka homogenization framework. Matrix damage is modeled as a phase-averaged isotropic stiffness degradation. The interface damage is governed by an equivalent interface stress on the lateral fiber surface. Hereby, the inhomogeneous stress distribution in the fiber-matrix interface is taken into account in the definition of the equivalent stress. A Weibull distribution for the interface strength is assumed. The model can account for an anisotropic distribution and evolution of load-carrying fibers with intact interfaces. The model is validated by means of tensile tests on unsaturated polyester polyurethane hybrid and epoxy resin systems with different glass fiber contents (23-50vol.%). The model yields satisfyingly accurate predictions under uniaxial and biaxial stress states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 161, 16 June 2018, Pages 143-158
Journal: Composites Science and Technology - Volume 161, 16 June 2018, Pages 143-158
نویسندگان
Malte Schemmann, Johannes Görthofer, Thomas Seelig, Andrew Hrymak, Thomas Böhlke,