摘要
应用光滑粒子流体动力学(SPH)理论以及有限单元理论,结合相关软件,研发了基于SPH的土壤高速切削仿真系统。以潜土逆转旋耕为例,应用该系统虚拟定量地研究了土壤高速切削过程,以揭示土壤-机器系统的作用机理。并且通过高速摄影试验验证了仿真系统的正确性。该系统的开发对于耕作机具(如各式旋转耕耘机和犁)的改进和创新设计有重要意义。
High speed soil-cutting simulation system based on Smooth Particle Hydrodynamics （SPH） methods and Finite Element Methods （FEM） was developed. Applying this system high speed soil-cutting process can be simulated to discover soil-tool interacting mechanism. This paper also arose a simulation instance of back-rotary tilling. By high-speed camera the woking process of back-rotary tilling was recorded. Compared high-speed photo with simulation end, the basic conclusion is that the simulation system can be applied to high-speed soil cutting simulation. This simulation system will help to improve innovation design level of high-speed cultivation machine such as high-speed plow and high-speed rotary tiller.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2007年第8期20-26,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
江苏省高校自然科学基金资助项目(05kjb310003)
关键词
SPH
旋耕
仿真
土壤机器相互作用
高速切削
SPH （Smooth Particle Hydrodynamics）
back-rotary tilling
simulation
soil-tool interaction
high-speed cutting
