【摘要】 脱层损伤是层合复合材料常见的一种损伤。本文以单向机织物增强环氧树脂复合材料层合板为研究对象,研究了脱层损伤大小和脱层损伤位置对层合悬臂梁自振特性的影响规律。通过实验和数值模拟,得到了脱层损伤对层合梁自振特性影响的一些规律性认识,通过实验和数值分析结果的比较,也证实了本文采用的数值分析方法的正确性。更多还原

【Abstract】 Delaminating damage is a common damage for the laminated composites.It has been studied in this paper about the law how the dynamical properties of the laminated beams to be affected by various damages.A set of laminated composites cantilever beams,with different sizes and different position internal delaminating damages,and a set of intact beams,were made from unidirectional woven reinforced epoxy composites.The natural frequencies of those beams have been measured and calculated.A number of laws about the delaminating effect on beams’ vibration properties have been recognized.Comparing the results of experiment with numerical analysis,it is proved that the numerical analysis method applied in this paper is accurate.更多还原