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首页> 外文期刊>Journal of thermal stresses >MODELING OF FIBER-REINFORCED COMPOSITE MATERIAL SUBJECTED TO THERMAL LOAD
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MODELING OF FIBER-REINFORCED COMPOSITE MATERIAL SUBJECTED TO THERMAL LOAD

机译：纤维复合材料在热载荷作用下的建模

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摘要

Two-dimensional thermally loaded structural elements are considered. The elements are made of composite materials in the form of a multi-layer laminate of matrix layers filled with the fibers. In each layer the fraction of fibers and their arrangement in a matrix can be different. The modeling process of thermal properties of such materials, defined by the coefficients of thermal conductivity in the direction of orthotropy axes (fibers and direction perpendicular to them) is discussed. Using the heat balance equation and Fourier's basic law for total balance of heat flux for mixture of fibers and matrix, the substitute conductivity coefficients in orthotropy directions are determined for a variety of cross-sections of filling fibers in particular layer. These coefficients define the macroscopically equivalent homogeneous orthotropk materials of each layer. Next, the substitute conductivity coefficients for the stack of layers are determined, where the layers stack is modeled with one homogenous material. The proposed model of fiber-reinforced laminate was used in some numerical examples. To analyze the problem of heat transfer within a structure domain, the finite element method was applied.
机译：考虑二维热负荷结构元件。这些元件由复合材料制成，该复合材料为填充有纤维的基质层的多层层压体的形式。在每一层中，纤维的比例及其在基质中的排列可以不同。讨论了这种材料的热特性建模过程，该过程由正交各向异性轴方向（纤维和垂直于它们的方向）上的导热系数定义。使用热平衡方程式和傅立叶基本定律，求出纤维和基体混合物的总热通量平衡，从而确定特定层中填充纤维的各种横截面在正交各向异性方向上的替代电导率系数。这些系数定义了每一层的宏观等效均质正交各向异性材料。接下来，确定层堆叠的替代电导率系数，其中使用一种均质材料对层堆叠进行建模。在一些数值示例中使用了所提出的纤维增强层压板模型。为了分析结构域内的传热问题，应用了有限元方法。

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