...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Analysis and modeling of the percussion coring of an innovative hydrostatic sediment corer
【24h】

Analysis and modeling of the percussion coring of an innovative hydrostatic sediment corer

机译：新型静水泥沙取样器的冲击取芯分析与建模

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to optimize the utilization of the kinetic energy derived from the hydrostatic energy to collect more sediment core, the paper focus on the analysis and the modeling of the percussion coring of a hydrostatic seafloor sediment corer, including the modeling of the stress wave traveling along the tube and the construction of the dynamic model of the tube-sediment system. The hydrostatic corer is feature by using both the hydrostatic energy of the seawater and gravity potential energy to collect the sediment in a percussive way. The analysis results reveal the under-sampling phenomenon of the corer which was observed and confirmed by the sea trial. To weaken the under-sampling and improve the utilization of the hydrostatic energy, several effective factors have been studied through the dynamic model and the results shows that the large inner diameter of the tube and the high mechanical impedance of the cushion and the increase of the single percussion energy and the adequate area ratio of the tube can considerably weaken the under-sampling and improve the recovery ratio. The modeling method and analysis results can provide some instructive information for the design and improvement of the percussive seafloor sediment corer.
机译：为了优化利用静水能产生的动能来收集更多的沉积物芯，本文着重于静水海床沉积物芯的冲击取芯的分析和建模，包括沿波传播的应力波的建模。管和沉积系统动力学模型的建立。静水压实机的特征是利用海水的静水能和重力势能以冲击方式收集沉积物。分析结果表明，通过海试已经观察到并确认了去核剂的欠采样现象。为了减弱欠采样并提高静液压能的利用，通过动力学模型研究了几个有效因素，结果表明，管的内径较大，垫子的机械阻抗较高，且垫层的增大。单次冲击能量和足够的试管面积比可大大削弱欠采样并提高回收率。建模方法和分析结果可为冲击式海底沉积物芯的设计和改进提供指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号