期刊文献+

EXPERIMENTAL AND NUMERICAL RESEARCH ON BULLDOZER WORKING PROCESS 被引量:3

EXPERIMENTAL AND NUMERICAL RESEARCH ON BULLDOZER WORKING PROCESS
下载PDF
导出
摘要 A simulative analysis coupled with experiment on behaviors of a soil bed cut by a model bulldozer blade is carried out using the finite element/distinct element method(FE/DEM) facility built in the ELFEN package. Before simulation, tensile/compression, triaxial compression and the soil specimens are examined through uniaxial direct shear tests to obtain model characteristics and relevant parameters, then soil cutting experiments are carried out via a mini-soil bin system with a soil bed of 60/120 mm in width and 10 mm in depth cut by a 1/9 scale model bulldozer blade moving with the velocity of 10 mm/s. The soil constitutive model includes the tensile elastic model for tensile breakage and the compressive elastoplastic relationship with Mohr-Coulomb criterion. The cutting length in simulation is set as 1/4 of that in the experiment divided into 1 869 triangular elements. The comparison between the simulated results and experimental ones shows that the used model is capable of analyzing soil dynamic behaviors qualitatively, and the predicted fracturing profiles in general conform to the experiment. Hence the feasibility for analyzing soil fracturing behaviors in tillage or other similar processes is validated. A simulative analysis coupled with experiment on behaviors of a soil bed cut by a model bulldozer blade is carried out using the finite element/distinct element method(FE/DEM) facility built in the ELFEN package. Before simulation, tensile/compression, triaxial compression and the soil specimens are examined through uniaxial direct shear tests to obtain model characteristics and relevant parameters, then soil cutting experiments are carried out via a mini-soil bin system with a soil bed of 60/120 mm in width and 10 mm in depth cut by a 1/9 scale model bulldozer blade moving with the velocity of 10 mm/s. The soil constitutive model includes the tensile elastic model for tensile breakage and the compressive elastoplastic relationship with Mohr-Coulomb criterion. The cutting length in simulation is set as 1/4 of that in the experiment divided into 1 869 triangular elements. The comparison between the simulated results and experimental ones shows that the used model is capable of analyzing soil dynamic behaviors qualitatively, and the predicted fracturing profiles in general conform to the experiment. Hence the feasibility for analyzing soil fracturing behaviors in tillage or other similar processes is validated.
出处 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2007年第2期41-46,共6页 中国机械工程学报(英文版)
基金 This project is supported by National Natural Science Foundation of China (No. 10372113) Royal Society-NSFC China-UK Joint Project (No. 16468).
关键词 Finite element method Discrete element method Finite element/distinct element method(FE/DEM) Soil Bulldozer Finite element method Discrete element method Finite element/distinct element method(FE/DEM) Soil Bulldozer
  • 相关文献

参考文献14

  • 1YONG R N, HANNA A W. Finite element analysis of plane soil cutting[J]. Journal of Terramechanics, 1977, 14(3): 103-125.
  • 2CHI L, KUSHWAHA R L. A non-linear 3D finite element analysis of soil failure with tillage tools[J]. Journal of Terramechanics, 1990, 27(4):343-366.
  • 3MOUAZEN A M, NEMENYI M. Finite element analysis of subsoiler cutting in non-homogeneous sandy loam soil[J]. Soil & Tillage Research,1999, 51(1): 1-15.
  • 4ABU-HAMDEH H N, REEDER C R. A nonlinear 3D finite element analysis of the soil forces acting on a disk plow[J]. Soil & Tillage Research, 2003, 74(2): 115-124.
  • 5KARMAKAR S, KUSHWAHA R L, STILLING D S D. Soil failur eassociated with crack propagation for an agricultural tillage tool[J]. Soil& Tillage Research, 2005, 84(2): 119-126.
  • 6MOMOZU M, OIDA A, YAMAZAKI M, et al. Simulation of a soil loosening process by means of the modified distinct element method[J].Journal of Terramechanics, 2002, 39(4): 207-220.
  • 7LILT S H, SUN D A, WANG Y S. Numerical study of soil collapse behavior by discrete element modeling[J]. Computers and Geotechnics,2003, 30(5): 399-408.
  • 8NAKASHIMA H, OIDA A. Algorithm and implementation of soil-tire contact analysis code based on dynamic FE-DE method[J]. Journal of Terramechanics, 2004, 41(2-3): 127-137.
  • 9ZHANG R, LI J Q. Simulation on mechanical behavior of cohesive soil by distinct element method[J]. Journal of Terramechanics, 2006, 43(3):303-316.
  • 10OWEN D R J, FENG Y T. Parallelised finite/discrete element simulation of multi-fracturing solids and discrete systems[J]. Engineering Computations, 2001, 18(3-4): 557-576.

同被引文献32

引证文献3

二级引证文献19

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部