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OALib Journal期刊
ISSN: 2333-9721
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基于离散元模拟的沥青混合料单轴压缩试验细观力学分析
DOI: 10.3969/j.issn.1671-7627.2015.05.012, PP. 73-78
Keywords: 沥青混合料,单轴压缩试验,离散元,接触力,位移
Abstract:
通过fish语言编程建立沥青混合料ac-16二维离散元模型,模拟了ac-16单轴压缩试验的全过程,研究了在单轴压缩试验过程中应力-应变、接触力分布、颗粒位移、接触压力和接触拉力的变化情况。研究结果表明:在单轴压缩试验过程中,随着轴向应变的增大,试件中接触压力和接触拉力的分布由密集逐渐变稀疏,并且接触压力和接触拉力集中现象逐渐减少;随着轴向应变的增加,整个试件中、集料和沥青砂浆之间、沥青砂浆之间以及集料之间的接触压力个数比例都逐渐减小,接触拉力个数比例都逐渐增大,并且,整个试件中、集料和沥青砂浆之间、沥青砂浆之间以及集料之间的接触压力均值和接触拉力均值都先增加后减小。
| [1] | itascaconsultinggroup.pfc2dversion3.1[m].minneapolis:itascaconsultinggroup,2004.
|
| [2] | itascaconsultinggroup.pfc3dversion3.1[m].minneapolis:itascaconsultinggroup,2004.
|
| [3] | youz,buttlarwg.discreteelementmodelingtopredictthemodulusofasphaltconcretemixtures[j].journalofmaterialsincivilengineering,2004,16(2):140-146.
|
| [4] | youz,buttlarwg.applicationofdiscreteelementmodelingtechniquestopredictthecomplexmodulusofasphalt-aggregatehollowcylinderssubjectedtointernalpressure[j].transportationresearchrecord,2005,1929:218-226.
|
| [5] | youz,buttlarwg.micromechanicalmodelingapproachtopredictcompressivedynamicmoduliofasphaltmixtureusingthedistinctelementmethod[j].transportationresearchrecord,2006,1970:73-83.
|
| [6] | kimh,buttlarwg.micromechanicalfracturemodelingofasphaltmixtureusingthediscreteelementmethod[c]//gsp130:advancesinpavementengineering,proceeding,sessionsofthegeo-frontiers2005congress.reston:[s.n.],2005.
|
| [7] | abbasa,masade,papagiannakist,et.al.micro-mechanicalmodelingoftheviscoelasticbehaviorofasphaltmixturesusingthediscrete-elementmethod[j].internationaljournalofgeomechanics,2007,7(2):131-139.
|
| [8] | daiq,youz.predictionofcreepstiffnessofasphaltmixturewithmicromechanicalfinite-elementanddiscrete-elementmodels[j].journalofengineeringmechanics,2007,133(2):163-173.
|
| [9] | 侯曙光.基于动态蠕变试验的沥青混合料黏弹性分析[j].南京工业大学学报:自然科学版,2010,32(1):33-36.
|
| [10] | 陈俊.基于离散元方法的沥青混合料虚拟疲劳试验研究[d].南京:东南大学,2010.
|
| [11] | youz,adhikaris,daiq.three-dimensionaldiscreteelementmodelsforasphaltmixtures[j].journalofengineeringmechanics,2008,134(12):1053-1063.
|
| [12] | liuy,daiq,youz.viscoelasticmodelfordiscreteelementsimulationofasphaltmixtures[j].journalofengineeringmechanics,2009,135(4):324-333.
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