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Silage-corn harvesting machinery traffi c eff ects on soil bulk density and water permeability
repeated traffi c passes silage harvester soil compaction soil physical damage soil porosity
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2014/2/24
Soil compaction caused by machinery traffi c aff ects the growth of agricultural crops and also has environmental eff ects
like soil damage and erosion. Field experiments were cond...
含沙水流中翼型空蚀磨损试验（Experiment on Damage of Cavitation and Silt Abrasion for Hydrofoil in Silt-laden Water Flow）
翼型 含沙水流 空蚀 磨损
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2010/12/29
模拟水力机械内部流动环境，在收缩－扩散型试验段中对翼型进行了空蚀、磨损及两者联合作用破坏试验，观测表面破坏微观形貌并测量破坏深度分布规律。空蚀形貌呈较为规则的近圆独立蚀坑，其分布较为随机。根据颗粒对表面作用的不同，磨损形貌表现为冲击、铲削、犁耕及切削等类型。在较高固相质量浓度下，联合作用破坏形貌大多在极端的角度(90°或0°)以颗粒磨损形式出现，其尺度特征在翼型表面随位置后移远大于磨损形貌，宏观破...