永乐大钟-悬挂结构动态响应分析

【作者】 程载斌； 申仲翰；

【机构】 中国科学院力学研究所；

【摘要】 本文针对永乐大钟-悬挂结构在撞钟激励下的动态响应进行了振动测试分析。在钟锤前端布置传感器测量锤头的加速度,估算钟锤的激励力;在钟架悬挂结构顶端悬挂点布置传感器测量悬挂木架主梁的加速度响应。通过时域与频域分析,给出了大钟-悬挂结构的自振特性和撞钟激励下的动态响应,从而为永乐大钟的保护和撞钟安全评估提供参考。更多还原

【Abstract】 In the present paper,vibration testing and analysis of Yongle bell-suspension structure under beater impact was carried out.Acceleration response was measured by placing sensor on beater head and acceleration response of main beam on suspension point was also measured.The impact force was also estimated.Free vibration characteristics and dynamic response under beater impact were obtained by time and frequency domain analysis.It could provide references for protection and security evaluation under beater impact of Yongle bell.更多还原