Dissipation Behaviors of Vibrated Granular Balls in Different Gravity Environments

IF 1.3 4区工程技术 Q2 ENGINEERING, AEROSPACE

Microgravity Science and Technology Pub Date : 2024-01-24 DOI:10.1007/s12217-024-10097-w

Kai Zhang, Meng Chen, Farong Kou, Wenzhe Li

引用次数: 0

Abstract

The dissipation behavior of granular balls in a quasi-2D closed container subjected to vertical vibration is studied by means of discrete element method in this paper. Four universal granular phases playing high damping effect are finalized by simulating the gravity environments of Earth, Mars and Moon, respectively. Based on the commonality of dense granular clusters in the four high damping granular phases, the ideal dissipation behavior of granular balls in the quasi-2D closed container is indicated. Moreover, the optimal damping mechanism of granular balls in the quasi-2D vibrated closed container is further revealed by analyzing the differences of kinetic energy and potential energy of vibrated granular balls in the three different gravity environments. This study lays a foundation for maximizing the damping effect of vibrated granular materials with constant mass by controlling their dissipation behavior, which provides a new idea for the universal design of granular damping structures in engineering practice.

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不同重力环境下振动颗粒球的耗散行为

本文采用离散元法研究了准二维封闭容器中颗粒球受到垂直振动时的耗散行为。通过分别模拟地球、火星和月球的重力环境，最终确定了四种具有高阻尼效应的通用粒相。基于四种高阻尼颗粒相中致密颗粒团的共性，指出了颗粒球在准二维封闭容器中的理想耗散行为。此外，通过分析振动颗粒球在三种不同重力环境下的动能和势能差异，进一步揭示了颗粒球在准二维振动封闭容器中的最佳阻尼机制。该研究为通过控制质量恒定的振动颗粒材料的耗散行为最大化其阻尼效果奠定了基础，为工程实践中颗粒阻尼结构的通用设计提供了新思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microgravity Science and Technology 工程技术-工程：宇航

CiteScore

3.50

自引率

44.40%

发文量

期刊介绍： Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity. Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges). Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are: − materials science − fluid mechanics − process engineering − physics − chemistry − heat and mass transfer − gravitational biology − radiation biology − exobiology and astrobiology − human physiology