A novel vibration screening technique using bamboo: a numerical study

ABSTRACT

In vibration screening technique, the effectiveness of in-filled trenches in soil has been extensively studied over the years considering various synthetic in-filled materials. However, the application of natural but cheaper in-filled materials in vibration screening technique is still scarce. The present study investigates the efficiency and aptness of bamboo, a naturally available hollow and less expensive element, as a vibration barrier to mitigate the vibration induced by machine excitation. The vibration screening efficiency of the bamboo in-filled trench has been assessed based on two factors such as amplitude reduction factor (ARF) and system effectiveness (SE). Considering a vertical harmonic load as the source, three-dimensional finite element explicit dynamic analysis in the time domain has been performed assuming the soil as linearly elastic, isotropic, and homogeneous. The effect of various parameters such as the length and depth of the trench, the distance of the trench from the vibration source, the spacing between the bamboos, and the frequency of excitation on ARF and SE has been analyzed.

摘要

在振动筛分技术中，考虑到各种合成填充材料，多年来在土壤中填充沟槽的有效性得到了广泛的研究。然而，在振动筛分技术中，天然但便宜的填充材料的应用仍然是稀缺的。本研究探讨竹的效率和适应性，一个自然可用的中空和较便宜的元件，作为振动屏障，以减轻由机器激励引起的振动。基于减幅因子（ARF）和系统有效性（SE）两个因素，对竹材在填充沟槽中的振动筛分效率进行了评价。以竖向谐波荷载为震源，假定土体为线性弹性、各向同性和均匀性，进行时域有限元显式动力分析。分析了沟槽的长度和深度、沟槽距振动源的距离、竹子间距和激励频率对振幅折减系数和系统有效性的影响。

KEYWORDS:

• Active isolation
• amplitude reduction
• finite element analysis
• bamboo
• system effectiveness
• vibration screening

关键词:

• 主动隔离
• 振幅减小
• 有限元分析
• 竹子
• 系统效能
• 振动筛分

Additional information

Funding

The second author would like to acknowledge the financial support provided by the Council of Scientific and Industrial Research (CSIR), India to carry out the present work through a sponsored research project (Ref No. 22(0731)/17/EMR-II).