【摘要】 本文以飞机座舱透明体经受鸟撞击的损伤分析为背景,详细报道了透明体材料——3~#航空有机玻璃在不同温度和中、低应变率下的单轴压缩应力-应变行为的实验测试结果。给出了6个温度和7个应变率档次,共41组试验的加卸载循环的应力-应变表征曲线,并对采用的试验方法和结果的可靠性及其精确度作了广泛的讨论说明。更多还原

【Abstract】 According to the task background of the damage analysis for the airplane cabin impacted by birds, the results of experimental measurements for the uniaxial-eompressive stress-strain behaviour of polymer PMMA which is used for the transparency of aeroplane cabin at various temperatures in the glassy range and various strain rates for low to middle grade are reported in detail. A total of more than 41 group stress-strain characterized curves for loading-and-unloading circulating belong to 6 temperatures and 7 strain rate grades are presented. The experimental method used in this paper are briefly introduced, and the reliability and accuracy of measured results are reviewed. Some factors including the compared tests of specimens with different geometrical forms, the expressions of stress and strain, the temperature rise produced by the energy dissipation of plastic deformation, and the characteristics of stress-strain curves are discussed.更多还原