摘要
对多种不同型号的安全绳、缓冲包及假人系统开展实验室坠落试验分析.研究发现,相邻二次冲击的冲量之比,及相邻二次冲击的自由抛体运动持续时间之比都近似为一个定值,利用该统计规律导出估算阻尼系数的近似方法,并利用首次冲击波形的试验结果得到了三次幂非线性刚度系数,相关结果可作为安全绳性能评估的重要依据.
In the present paper,a variety of different types of safety ropes,buffer package and dummy system are analyzed by laboratory dropping tests.It is found from the test results that the ratios of the impulses of two adjacent impacts are approximately a constant,so as the ratios of the duration of the free projectile motion of two adjacent impacts.Based on those statistical laws,an approximation method for estimating the linear damping coefficients is proposed.Moreover,the cubic power nonlinear stiffness coefficients are estimated using the first impact wave.The corresponding results can be used as important reference for evaluating the performance of safety ropes.
作者
马恒
王超
吴芳芳
李亮
张书南
黄志龙
MA Heng;WANG Chao;WU Fangfang;LI Liang;ZHANG Shunan;HUANG Zhilong(Zhejiang Huadian Equipment Testing and Research Institute Co.,Ltd.,Hangzhou 310027,Zhejiang,China;School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,Zhejiang,China)
出处
《力学季刊》
CAS
CSCD
北大核心
2023年第1期203-209,共7页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(12132013)
国网浙江省电力有限公司项目(2020FD05)。
