正负三角波在舰艇抗冲击设计中的应用
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摘要
前联邦德国国防军舰建造规范BV043/85规定,由冲击反应谱转换到正负三角波载荷,加载该载荷考核舰船设备抗冲击性能。文中通过理论推导,得到具体应用公式。分析了该正负三角波的冲击谱特性,其在低频等位移段提高了反应谱值,在中频段和高频段(等速度段和等加速度段)降低了反应谱值。以水面舰艇甲板安装设备为例,应用该载荷进行设备抗冲击分析,与反应谱方法的结果进行比较,应用反应谱分析方法得到的设备最大位移和应力值约为应用正负三角波方法的1.2～1.3倍。
Federal Germany navy ship building specification BV043/85 adopted plus-minus triangular wave from shock response spectrum as load of navy equipment shock load.Practical formulations have been got based on theoretical deduction.Analysis of SRS showed that the plus-minus triangular wave enhanced displacement shock response spectrum value,also it decreased psudo velocity and accelerate shock response spectrum value.Secondly rack-box structure like surface ship missile launcher have been acted as an example,respectively apply BV043/85 and SRS to evaluation shock-resistant ability of marine equipment.The results show that the shock environment SRS method defined is about 1.2～1.3 times of BV043/85.
Federal Germany navy ship building specification BV043/85 adopted plus-minus triangular wave from shock response spectrum as load of navy equipment shock load.Practical formulations have been got based on theoretical deduction.Analysis of SRS showed that the plus-minus triangular wave enhanced displacement shock response spectrum value,also it decreased psudo velocity and accelerate shock response spectrum value.Secondly rack-box structure like surface ship missile launcher have been acted as an example,respectively apply BV043/85 and SRS to evaluation shock-resistant ability of marine equipment.The results show that the shock environment SRS method defined is about 1.2～1.3 times of BV043/85.
引文
[1]汪玉,华宏星.舰船现代冲击理论及应用[M].北京:科学出版社,2005.
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[3]乔普拉.结构动力学理论及其在地震工程中的应用[M].谢礼立,吕大刚,译.北京:高等教育出版社,2005.
[4]Naval sea System Command.Shock design criteria for surface ships[M].1976.
[5]中国舰船研究院科技发展部.前联邦德国国防军舰艇建造规范BV/0430-冲击安全性[Z].1998.
[6]GJB1060.1-91,舰船环境条件要求—机械环境[S].
[7]Effect upon spectra of the dynamic reaction of structures[R].AD209366,1998.
[8]尹群.水面舰船设备冲击环境与结构抗冲击性能研究[D].南京:南京航空航天大学,2006.
[9]陈海龙,姚熊亮,张阿漫,等.船用典型动力设备抗冲击性能评估研究[J].振动与冲击,2009,28(2):45-50.
[2]Effect upon spectra of the dynamic reaction of structures[R].AD209366,1998.
[3]乔普拉.结构动力学理论及其在地震工程中的应用[M].谢礼立,吕大刚,译.北京:高等教育出版社,2005.
[4]Naval sea System Command.Shock design criteria for surface ships[M].1976.
[5]中国舰船研究院科技发展部.前联邦德国国防军舰艇建造规范BV/0430-冲击安全性[Z].1998.
[6]GJB1060.1-91,舰船环境条件要求—机械环境[S].
[7]Effect upon spectra of the dynamic reaction of structures[R].AD209366,1998.
[8]尹群.水面舰船设备冲击环境与结构抗冲击性能研究[D].南京:南京航空航天大学,2006.
[9]陈海龙,姚熊亮,张阿漫,等.船用典型动力设备抗冲击性能评估研究[J].振动与冲击,2009,28(2):45-50.
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