列车制动计算中单位力单位的统一

Unity of Specific Effort Unit on Train/Brake Calculation

我国铁路已由“列车牵引计算规程”法定采用单位重力的作用力N/kN为单位牵引力 (或单位阻力或单位制动力 )的单位。但近年来在我国一些论著中出现了采用单位质量的作用力kN/t (或N/kg)的制动计算模式 ,并用于地铁列车 ,从而形成不必要的不统一。为了给读者及用户提供方便 ,在对照分析两种单位力单位制式的系列制动模式计算的基础上 ,作者指出在我国应统一到单位重力的作用力N/kN上来 ,只要相关物理量的定义、符号及单位一致 。

The effort per gravity N·kN -1 is legally determined to the unit of specific tractive effort (or train resistance or braking effort)on “Regulations on Railway Train Traction Calculation”in our country.But in the near future,the effort per mass kN·t -1 (or N·kg -1 )is useful to brake mode curve design for subway train and carrying on railway technical magazine,then the unbefitting un-unified condition is emerged.considering reader′s and user′s convenience and contrasting and analyzing between two series of brake calculation mode of unit of specific effort,the authors point out the unit of specific effort must be unitized on the effort per gravity N·kN -1 in our country,then the calculation formulas can be used to any form,but the definition,symbol and unit of ralative physical quality must be unified.