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- Tekeste, M., et al. Show all 3 Authors
- Biosystems engineering 2007 v.98 no.4 pp. 470-478
- soil strength; agroecological zones; probability analysis; soil compaction; soil penetration resistance; soil types; topography; climatic zones; soil water content; soil density; bulk density; surface layers; subsurface layers; field capacity; depth; sandy loam soils; root growth; clay loam soils; loam soils; soil resource management; geographical variation; Eritrea
- ... Soils in many agro-ecological zones in Eritrea, a country in sub-Saharan Africa, are low in productivity due to erosion, low organic matter and poor soil management. Recently, mechanised farming has been intensively practiced to increase agricultural food production. However, the use of heavy machinery and vehicles can cause soil compaction that reduces soil productivity and crop yield. A study wa ...
- Tekeste, M. Z., et al. Show all 5 Authors
- Terramechanics Journal 2009 v.46 no.5 pp. 229-239
- 0022-4898; 1879-1204
- Agricultural Research Service; algorithms; bulk density; data collection; finite element analysis; hardpans; layered soils; models; modulus of elasticity; prediction; resistance to penetration; sandy loam soils; soil compaction; soil water; soil water content; subsoil
- ... Axisymmetric finite element (FE) method was developed to simulate cone penetration process in layered granular soil. The FE was modeled using ABAQUS/Explicit, a commercially available package. Soil was considered as a non-linear elastic plastic material which was modeled using variable elastic parameters of Young’s Modulus and Poisson’s ratio and Drucker–Prager criterion with yield stress dependen ...