基于压力-土沉降关系标度规律的人工土轮胎-土抗压特性建模

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL Journal of Terramechanics Pub Date : 2023-01-01 DOI:10.1016/j.jterra.2023.02.002
Pius Jjagwe , Mehari Z. Tekeste , Nisreen Alkhalifa , Thomas R. Way
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引用次数: 2

摘要

半经验牵引模型利用ASABE圆锥和平板土壤沉降数据估计的土壤参数;然而,有限的研究将土壤测量工具的比例定律应用于各种初始土壤条件下的全尺寸轮胎-土壤系统。本研究研究了三个标度板(尺寸和形状)和两种土壤容重条件对人造土壤压力-沉降关系的影响。在人造土壤上的土仓试验中,根据LT235/75R15轮胎的垂直载荷(179kPa充气压力和8kN垂直载荷)测量矩形估计轮胎土壤形状和484cm2的接触面积。使用圆形、矩形和方形板,在1.21 Mg/m3土壤容重(普氏密度的66%)和1.41 Mg/m3土壤密度(普氏浓度的75%)的初始条件下,在人造土柱上收集沉降压力数据,在三个缩放区域(λ=0.5、λ=0.25和λ=0.125,其中λ=1是单个轮胎土仓试验的轮胎土估计足迹面积)。在几何尺度和压缩土壤所消耗的能量之间建立了一个具有强相关性的尺度定律。λ=0.125的板压力数据显示,随着松散土壤深度的增加,压力呈相对线性增加,类似于土壤圆锥贯入仪数据。λ=0.5的压力沉降数据显示出与现有模型相似的趋势,但两种初始土壤容重的系数不同。该研究证明了应用比例定律模拟软土和密实土上的轮胎-土壤系统。
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Modeling tire-soil compression resistance on artificial soil using the scaling law of pressure-soil sinkage relationship
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来源期刊
Journal of Terramechanics
Journal of Terramechanics 工程技术-工程:环境
CiteScore
5.90
自引率
8.30%
发文量
33
审稿时长
15.3 weeks
期刊介绍: The Journal of Terramechanics is primarily devoted to scientific articles concerned with research, design, and equipment utilization in the field of terramechanics. The Journal of Terramechanics is the leading international journal serving the multidisciplinary global off-road vehicle and soil working machinery industries, and related user community, governmental agencies and universities. The Journal of Terramechanics provides a forum for those involved in research, development, design, innovation, testing, application and utilization of off-road vehicles and soil working machinery, and their sub-systems and components. The Journal presents a cross-section of technical papers, reviews, comments and discussions, and serves as a medium for recording recent progress in the field.
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