基于动态设计分析方法的舰载鱼雷发射装置抗冲击特性研究
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摘要
舰船设备和系统的抗冲击能力是决定舰船战时生命力强弱的重要因素。该文采用舰艇三联装鱼雷发射装置模态试验与有限元综合建模技术,在Ansys Workbench中建立了发射装置抗冲击有限元分析模型,借鉴美国海军用以考核舰船设备抗冲击性能的动态设计分析方法(DDAM),结合国军标GJB1060设计发射装置冲击输入谱,对其进行抗冲击特性仿真计算,以考核发射装置的抗冲击性能。仿真结果表明,在发射装置转台瓦板处,发射装置横向冲击位移响应及Von Mises应力均为最大,但其最大Von Mises应力均没有超过材料的屈服强度。在材料的许用应力范围内,横向、纵向、垂向抗冲击性能均满足舰船甲板设备抗冲击考核要求。
The anti-shock capability of marine equipment and system is an important factor in determining the vitality of a ship in wartime. Based on the modal test for shipborne torpedo triple launcher and the finite element modeling technology, we establish a finite element analysis model of the launcher to investigate its anti-shock capability. In terms of the dynamic design analysis method(DDAM), with which American navy assess the anti-shock capability of marine equipment, we design launcher shock input spectrum according to the GJB1060 Standard to simulate and assess the anti-shock capability of the triple torpedo launcher. Simulation results demonstrate that on the turntable tile plate the maximum shock response displacement and the maximum Von-Mises stress appear in transverse direction, but the max transverse Von-Mises stress is less than the yield strength of material. The transverse, longitudinal and vertical anti-shock capabilities meet the requirements of the ship anti-shock assessment.
The anti-shock capability of marine equipment and system is an important factor in determining the vitality of a ship in wartime. Based on the modal test for shipborne torpedo triple launcher and the finite element modeling technology, we establish a finite element analysis model of the launcher to investigate its anti-shock capability. In terms of the dynamic design analysis method(DDAM), with which American navy assess the anti-shock capability of marine equipment, we design launcher shock input spectrum according to the GJB1060 Standard to simulate and assess the anti-shock capability of the triple torpedo launcher. Simulation results demonstrate that on the turntable tile plate the maximum shock response displacement and the maximum Von-Mises stress appear in transverse direction, but the max transverse Von-Mises stress is less than the yield strength of material. The transverse, longitudinal and vertical anti-shock capabilities meet the requirements of the ship anti-shock assessment.
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.
[2]刘建湖.舰船非接触水下爆炸动力学的理论与应用[D].无锡:中国船舶科学研究中心,2002.
[3]国防科学技术工业委.GJB106011291舰船环境条件要求机械环境[S].北京:国防科学技术工业委会,1991.
[4]乔普拉.结构动力学理论及其在地震工程中的应用[M].第2版.谢礼立,吕大刚,译.北京:高等教育出版社,2007.
[2]刘建湖.舰船非接触水下爆炸动力学的理论与应用[D].无锡:中国船舶科学研究中心,2002.
[3]国防科学技术工业委.GJB106011291舰船环境条件要求机械环境[S].北京:国防科学技术工业委会,1991.
[4]乔普拉.结构动力学理论及其在地震工程中的应用[M].第2版.谢礼立,吕大刚,译.北京:高等教育出版社,2007.
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