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压痕法确定纤维复合材料界面影响区蠕变特性的数值模拟法 被引量:5

Numerical Simulation of the Creep Characteristics of Interlayer Zone of Fiber Reinforced Composites by Indentation Test Method
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摘要 研究由平头压痕蠕变试验来确定纤维复合材料界面影响区蠕变性能参数的可行性。利用有限元蠕变分析确定在定压痕应力下的压痕蠕变率 ,重点放在稳定压痕蠕变率和复合材料材料界面影响区的蠕变性能参数的关系上。计算结果表明 ,界面影响区的剪应力沿纤维轴向在蠕变的主要过程中均匀分布 ,并且保持不变 ;详细地研究了压头大小对压痕蠕变响应的影响 :提出两种方法由压痕蠕变试验来确定界面影响区蠕变性能参数 ,并给出了算例。这些结果也有利于准确认识平头压痕蠕变试验从而拓宽其应用范围。 This paper discusses the possibility of determining the creep parameters oon the interlayer zone of reinforced composites by indentation test method.Indentation creep rates at constant loads are determined by analyzing creep using finite element analysis with emphasis on the relationship between creep rates and creep parameters of the interlayer zone.The calculated results show the shear strength in the axial direction of fibers is uniform and constant.The effect of indenter size on response of indentation creep is discussed in detail,and two methods to determine the creep property parameters of the interlayer zone is presented with illustrations.These results contribute to a better understanding and a broadening application of indentation test method.
出处 《纤维复合材料》 CAS 2003年第1期6-9,共4页 Fiber Composites
基金 国家自然科学基金 (5 0 0 0 5 0 16) 航空科学基金 (0 0B5 3 0 10 ) 长江学者基金资助项目
关键词 压痕法 纤维复合材料 界面影响区 蠕变特性 数值模拟法 indentation method,fiber composites,interfacial effect area,creep characteristics,numerical simulation
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共引文献11

同被引文献50

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