Numerical Analysis of Tilted Cutting and F128 Brushes  

作　　者：Libardo V.Vanegas-Useche Magd M.Abdel-Wahab Graham A.Parker 

机构地区：[1]Facultad de Ingeniería Mecánica,Universidad Tecnológica de Pereira,La Julita,Pereira 660003,Colombia [2]Division of Computational Mechanics,Ton Duc Thang University,Ho Chi Minh City,Viet Nam [3]Faculty of Civil Engineering,Ton Duc Thang University,Ho Chi Minh City,Viet Nam [4]Soete Laboratory,Faculty of Engineering and Architecture,Ghent University,Technologiepark Zwijnaarde 46,B-9052 Zwijnaarde,Belgium [5]Faculty of Engineering and Physical Sciences,University of Surrey.Guildford GU27XH,UK.

出　　处：《Computer Modeling in Engineering & Sciences》2019年第10期23-47,共25页工程与科学中的计算机建模（英文）

摘　　要：Road sweeping is an essential service that has to be conducted for public health,as well as aesthetic purposes.In many countries,sweeping vehicles are used for this activity.They usually comprise a gutter brush that sweeps the debris that is located in the road gutter.This work studies the performance of two kinds of gutter brushes:a cutting brush and a flicking(F128)brush.This is carried out by means of a 3-D dynamic,nonlinear Finite Element(FE)brush model developed by the authors.In this model,inertia forces are applied to the bristle,and its clamped end is fixed.Consequently,the surface(road)is rotated,translated,and raised.Bristle-road interaction is modelled as flexible-to-rigid contact.In particular,the aim of this article is to compare the performance of a conventional brush and a brush rotating at variable speed.As brushes normally work tilted,FE analyses are carried out for tilted cutting and F128 brushes,rotating at speeds that fluctuate at different frequencies.It is concluded that brush oscillations have a significant effect on bristle tip velocities and bristle-road forces.Also,at certain frequencies,oscillations seem to improve sweeping performance of the F128 brush.However,they do not appear to improve significantly the performance of the cutting brush.

关 键 词：GUTTER BRUSHES CUTTING BRUSH flicking BRUSH FEM variable speed BRUSHING 

分 类 号：O63[理学—高分子化学]