...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Micro-scale modeling of excited granular ship cargos: A numerical approach
【24h】

Micro-scale modeling of excited granular ship cargos: A numerical approach

机译：颗粒状兴奋货物的微观模型：一种数值方法

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

A micro-scale modeling approach is presented for simulating the dynamic behavior of granular materials having physical properties conforming to bulky ship cargos. This paper's outlook is on the potential of methods of granular matter investigation for the prediction of cargo shift and related phenomena, a field that, despite its great importance, remains underdeveloped. Particles are treated as discrete interacting objects. The so called "molecular dynamics" method is applied. Different materials are investigated numerically in term of how easily they can exhibit a "fluid-like" behavior. Monosized particles of diameters between 1 and 3 mm and of various densities, are subjected either to tilting or to linear vibration. The tests are organized in two campaigns. In the first, container dimensions and number of particles are fixed; subsequently the filling ratio varies. In the second series, geometric similarity is kept. The container's width is adjusted to a certain multiple of the particle diameter. Center of mass and free surface profile are monitored. The focus is on forcing thresholds where behavioral changes are realized, in connection to the different materials and configurations tested. Heap formation on the surface and stick-slip behavior, both linked to the initiation of cargo shift, are characteristic phenomena receiving attention.
机译：提出了一种微型建模方法，用于模拟具有符合大型船舶货物物理特性的粒状材料的动态行为。本文展望了颗粒物质调查方法在预测货物移动和相关现象方面的潜力，尽管这一领域非常重要，但仍未得到充分发展。粒子被视为离散的交互对象。应用了所谓的“分子动力学”方法。对不同材料的表现出“流体状”行为的难易程度进行了数值研究。直径在1到3毫米之间并且具有不同密度的均一尺寸的颗粒会发生倾斜或线性振动。测试分为两个活动。首先，容器的尺寸和颗粒数是固定的。随后，填充率会有所不同。在第二系列中，保持了几何相似性。将容器的宽度调整为粒径的一定倍数。监测质心和自由表面轮廓。重点是针对与所测试的不同材料和配置相关的强制行为实现变化的阈值。表面上的堆垛形成和粘滑行为，都与货物移动的开始有关，都是引起人们注意的特征现象。

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