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

汪 玉;赵建华;杜俭业;穆 春

振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 87-90.

PDF(3051 KB)
PDF(3051 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 87-90.
论文

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

  • 汪 玉1;赵建华2;杜俭业1;穆 春3

作者信息 +

SIMULATION OF THE ANTISHOCK PERFORMANCE OF A MARINE DIESEL ENGINE BASED ON THE FINITE ELEMENT CALCULATION OF MULTIBODY DYNAMICS

  • WANG Yu 1;Zhao Jianhua2;DU Jianye 1;MU Chun 3
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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。

Abstract

Abstract Anti-shock performance is a design index of modern marine diesel engine. Simulation analysis is the most important method to research shock characteristics of diesel. Various time domain shock waves are translated into shock response spectrums (SRS). The peak acceleration value of 10ms triangle shock wave is equal to the value of acceleration isoline of SRS. Accordingly, it is suggested that 10ms triangle shock wave is suited for anti-shock performance analysis of equipment as a standard input load. Based on the software of ABAQUS6.7, the flexible multi-body and anti-shock analysis model of the whole engine is established. The model contains backboned parts. The shock simulation of a V6 type diesel is carried out separately under rated condition and stop condition. The simulation results indicate that the shock response characteristic of diesel engine is nonlinear. The stress response under shock and rated condition is not the simple stack of the shock stress under stop condition and the working stress under rated condition. The strength of crankshaft, cylinder block, flywheel housing and block support should be checked through shock simulation.

关键词

抗冲击 / 舰用柴油机 / ABAQUS6.7软件 / 多体动力学

Key words

shock resistance / marine diesel engine / ABAQUS6.7 software / multi-body dynamics

引用本文

导出引用
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
WANG Yu;Zhao Jianhua;DU Jianye;MU Chun . SIMULATION OF THE ANTISHOCK PERFORMANCE OF A MARINE DIESEL ENGINE BASED ON THE FINITE ELEMENT CALCULATION OF MULTIBODY DYNAMICS[J]. Journal of Vibration and Shock, 2009, 28(11): 87-90

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