冻土切削理论分析  

Theoretical Analysis on Frozen Soil Cutting

作　　者：余群[1] 张招祥[1] 

机构地区：[1]北京农业工程大学车辆工程研究所

出　　处：《北京农业工程大学学报》1994年第1期105-110,共6页

基　　金：国家自然科学基金资助课题

摘　　要：根据一系列冻土切削试验结果,认为冻土切向切削力波动近似服从正态统计分布。根据冻土切削破坏过程机理,得出切向切削力峰值的理论表达式。此表达式包容了切刀切入阻力和撕裂阻力,建立了切向切削力峰值与冻土强度、切削深度及切刀几何角度等因素的关系。Through a series of frozen soil cutting tests,it is shown that the varia- tion of tangential cutting force can be described approximately following the normal distribution.Based on the mechanism of the process of frozen soil cutting,an ex- pression on tangential peak cutting force is obtained as the function of frozen soil strength,cutting depth and geometric angles of a blade.The resistances of the blade penetrating into and tearing away frozen soil are included in the expression.

关 键 词：冻土 冻土切削 切削理论 

分 类 号：TU752[建筑科学—建筑技术科学]