| 基于多体动力学有限元计算的一种舰用柴油机抗冲击性能仿真 |
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| 引用本文： | 汪玉,赵建华,杜俭业,穆春.基于多体动力学有限元计算的一种舰用柴油机抗冲击性能仿真[J].振动与冲击,2009,28(11):87-90. |
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| 作者姓名： | 汪玉 赵建华 杜俭业 穆春 |
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| 作者单位： | （1海军装备研究院 舰船论证研究所，北京 100161；2海军装备研究院 博士后科研工作站，北京 100161；3、92132部队，青岛 266400） |
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| 摘 要： | 抗冲击性是现代舰用柴油机的设计指标之一，仿真分析是柴油机抗冲击研究的重要手段。将各种波形的加速度时域输入载荷转化为冲击谱，发现脉宽为10ms的三角波加速度峰值与冲击谱等加速度线的值相同，建议将该波形作为设备抗冲击对比分析的标准输入载荷。基于ABAQUS6.7软件，建立包含柴油机主干部件的整机多柔体抗冲击分析模型，分别实现了某V6型柴油机在额定工况和停机工况下受冲击的仿真计算。仿真结果表明，柴油机冲击响应特性是非线性的，额定工况下受冲击时应力响应值并非是停机情况下受冲击的应力响应值和额定工况下工作应力的简单叠加。柴油机曲轴、机体、飞轮壳和机脚的冲击强度都需要通过仿真进行校核。
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| 关 键 词： | 抗冲击 舰用柴油机 ABAQUS6.7软件 多体动力学 |
| 收稿时间： | 2008-11-5 |
| 修稿时间： | 2009-1-14 |
Simulation on antishock performance of a marine diesel engine by using finite element calculation based on multibody dynamics |
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| Abstract: | Various shock waves in time domain were translated into shock response spectrums (SRS). It was found that the peak acceleration value of 10ms triangular shock wave is equal to the acceleration value on the isoline of SRS. Accordingly, 10ms triangular shock wave was suggested as the standard input load for anti-shock performance analysis of equipment. By virtue of the software of ABAQUS6.7, the flexible multi-body and anti-shock analysis model of the whole engine, including the backbone, was established. The shock simulations of a V6 type diesel were carried out under rated condition and standing condition respectively. The simulation results indicate that the shock response characteristic of diesel engine is nonlinear. The stress response under rated condition added with a shock is not the simple superposition of the shock stress under standing condition plus the working stress under rated condition. The strength of crankshaft, cylinder block, flywheel housing and block support should be checked through shock simulation. |
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| Keywords: | shock resistance marine diesel engine ABAQUS6 7 software multi-body dynamics |
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