期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于ALE方法的弹体入水硬质聚氨酯泡沫缓冲器降载性能分析
1
作者 肖有才 邢旭阳 +5 位作者 杨佩琮 张宏 熊言义 徐忠四 赵志颖 孙毅 《船舶力学》 EI CSCD 北大核心 2024年第7期1111-1123,共13页
针对弹体高速入水过程中的降载问题,设计一种硬质聚氨酯泡沫缓冲器。基于霍普金森压杆实验技术,获取冲击载荷下硬质聚氨酯泡沫密度和应变率效应,构建其宏观本构模型。采用拉格朗日-欧拉流固耦合方法(ALE),建立弹体入水冲击数值仿真模型... 针对弹体高速入水过程中的降载问题,设计一种硬质聚氨酯泡沫缓冲器。基于霍普金森压杆实验技术,获取冲击载荷下硬质聚氨酯泡沫密度和应变率效应,构建其宏观本构模型。采用拉格朗日-欧拉流固耦合方法(ALE),建立弹体入水冲击数值仿真模型,验证所建本构关系及ALE方法的合理性,对加装缓冲器的弹体高速入水问题进行数值仿真计算,获得入水过程中硬质聚氨酯泡沫的动态破坏过程及弹体运动参数,从而分析硬质聚氨酯泡沫密度、厚度对降载特性影响规律,讨论不同入水速度下硬质聚氨酯泡沫参数的设计方法。研究结果表明:硬质聚氨酯泡沫动态力学性能应变率效应不明显,但密度效应明显,缓冲降载性能随硬质聚氨酯泡沫密度和厚度的增大而升高。 展开更多
关键词 弹体入水 硬质聚氨酯泡沫 应变率效应 密度效应 缓冲吸能
下载PDF
Application and dynamical performance simulation of tooth surface measured data of hypoid gear 被引量:2
2
作者 xu zhong-si FENG Lei LEI Hong-xia 《Journal of Measurement Science and Instrumentation》 CAS 2014年第2期1-8,共8页
The tooth surface shape of hypoid gear is very complicated, and tooth surface accuracy of hypoid gear can be measured by using the latticed measurement and scanning measurement. Advantages and disadvantages of the two... The tooth surface shape of hypoid gear is very complicated, and tooth surface accuracy of hypoid gear can be measured by using the latticed measurement and scanning measurement. Advantages and disadvantages of the two measurement patterns are compared and application of their measurement data on hypoid gear's quality management is analyzed. How to use these measurement data to simulate the dynamical performance of hypoid gear is researched, and the intelligent predicton of the dynamical performance indexes of contact spot, root stress, vibration exciting forces and load distribution and hertz contact stress on the tooth surface are carried out. This research work has an important guiding sense to design and ma- chine hypoid gear with low vibration and noise. 展开更多
关键词 hypoid gear latticed measurement scanning measurement tooth surface dynamical performance simulation
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部