摘要
由于复合材料内部纤维与树脂的热膨胀系数差异很大,尤其是树脂性能对温度载荷较为敏感,服役时复合材料环境的高低温变化将使其热力学性能与常温状态产生较大差异。采用Maxwell本构模型,探讨了温度变化对树脂材料本构关系的影响。假设纤维为稳定材料,即其性能不随温度变化,依据复合材料细观力学理论选择六边形代表体积元为分析对象,建立了复合材料在温度载荷下热力学的本构模型。并分别讨论了温度载荷下复合材料内部纤维体分比和纤维排列方式变化对其热力学性能的影响,实现了热-力耦合作用下复合材料的跨尺度分析。
As the temperature of severing environment variating severely,there would be a great alteration in the thermodynamics properties of composites. Due to the great difference of thermal expansion coefficient between internal fiber and resin in the composites,the resin performance is more sensitive to temperature environment. In this paper,based on the Maxwell constitutive model,the relationship between resin constitutive and temperature is studied. Assuming that the fiber performance does not vary with temperature,according to the mesoscopic composite theory,a hexagon representative volume element is employed,and the finite element method（ FEM） is adopted to establish the thermodynamics constitutive model of composites under temperature. The influence of fiber arrangement and fiber content on the composites thermodynamics constitutive is discussed,respectively. The process would be applied for a multi-scale solution for composite under thermodynamics coupling loads.
作者
高红成
黄其忠
马帅
胡照会
彭玉刚
GAO Hong-cheng HUANG Qi-zhong MA Shuai HU Zhao-hui(Beijing Composite Materials Co., Ltd., Beijing 102101, China State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China)
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2016年第10期42-49,共8页
Fiber Reinforced Plastics/Composites
