摘要
为有效评估舰船抗冲击试验中柴油机的冲击环境及其抗冲击性能,该文选取某型柴油机为研究对象,基于计算多体动力学理论,结合有限元方法,对其依次进行多刚体动力学、刚柔混合多体动力学、冲击动力学建模。基于建立的模型,计算得到舰载柴油机遭受水下爆炸冲击时加速度、位移时程曲线及曲轴的应力分布。结合毁伤理论,分析计算结果中不同参数的分布规律,给出柴油机抗冲击测量中不同测量参数的测点位置选取,为实际测量方案的制定奠定基础。整个建模和分析过程不失一般性,可应用于其他舰载机械设备。
In order to assess the shock environment and impact resistance of diesels in anti-shock test, a diesel was selected as research object in this paper. A series of models including rigid multi-body dynamics,rigid-flexible multi-body dynamics and shock dynamics were established in succession according to the theory of multi-body dynamics and the finite element method. Based on these models,the acceleration curve,displacement curve and stress nephogram of the carrierborne diesel caused by the impact of underwater explosion were obtained, and the distribution law of different parameters in the calculations was analyzed in line with the damage theory. The location of test points of different measured parameters in diesel anti-shock test was given for selection. The results have laid a certain foundation for the preparation of actual anti-shock schemes. The whole modeling and analysis process did not lose its generality and the method can be applied in other shipboard machinery.
出处
《中国测试》
CAS
北大核心
2016年第5期140-144,共5页
China Measurement & Test
基金
国家自然科学基金(51209215)
关键词
单船舶机械
测点布设
多体动力学
抗冲击
柴油机
marine machinery
test point arrangement
multi-body dynamics
anti-shock
diesel
作者简介
高浩鹏（1986-），男，陕西杨凌示范区人，工程师，博士．研究方向为水下爆炸试验测量与数值仿真。
