船用齿轮箱系统抗冲击特性数值仿真

童水光;魏 超;费钟秀;林雪妹

振动与冲击 ›› 2012, Vol. 31 ›› Issue (12) : 79-85.

PDF(1791 KB)
PDF(1791 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (12) : 79-85.
论文

船用齿轮箱系统抗冲击特性数值仿真

  • 童水光,魏 超,费钟秀,林雪妹
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Numerical simulation of anti-shock characteristic of Marine Gearbox system

  • Tong Shui-guang; Wei Chao; Fei Zhong-xiu; Lin Xue-mei
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摘要

研究了船用齿轮箱系统抗冲击特性的分析方法。采用静力学、非线性接触有限元法计算某大型船用齿轮箱箱体、轮齿正常工况的等效静应力,在NX.NASTRAN的结果文件中提取各应力分量。建立齿轮箱系统的箱体-轴承-轴-齿轮耦合有限元模型,用DDAM法计算其在水下爆炸冲击产生的动应力。应用弹塑性力学知识,将相应单元的静、动应力的分量按照MISES准则重新合成,引入无量纲强度剩余系数,评估该齿轮箱系统的抗冲击性能。采用衰减正弦基波组合的时间历程对冲击谱进行匹配,模拟水下爆炸环境,用模态加速度法,得到齿轮箱系统的加速度瞬态响应特性。研究结果为船用齿轮箱的抗冲击性能评估提供了理论基础,同时为抗冲击设计及冲击隔离提供数据支撑。

Abstract

The shock-resistant analysis method of a large marine gearbox system is studied. Compute the equivalent static stress under normal operation condition of the box and gear using static and nonlinear contact finite element method, extract the stress components from the result files of NX.Nastran. A coupling finite element model of box-bearing-shaft-gear is established. Then Calculate the dynamic stress generated by underwater explosion using DDAM(Dynamic Design Analysis Method), re-synthesis the static and dynamic stress components of the corresponding elements by Von-Mises Guideline. The dimensionless coefficient of remaining strength is introduced to assess the shock-resistant performance of the gearbox. To simulate underwater explosion environment, shock spectrum signal curve matched by the form of assembling dumped sinusoids is researched. The results of study provide theoretical basis for anti-shock performance assessment and shock isolation.

关键词

齿轮箱 / 抗冲击性能 / DDAM / 瞬态响应 / 衰减正弦曲线

Key words

gearbox / shock-resistant performance / DDAM / transient response / dumped sinusoids

引用本文

导出引用
童水光;魏 超;费钟秀;林雪妹. 船用齿轮箱系统抗冲击特性数值仿真[J]. 振动与冲击, 2012, 31(12): 79-85
Tong Shui-guang;Wei Chao;Fei Zhong-xiu;Lin Xue-mei. Numerical simulation of anti-shock characteristic of Marine Gearbox system [J]. Journal of Vibration and Shock, 2012, 31(12): 79-85

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