基于LS—DYNA的柠条生材切割仿真分析及试验研究OA

Caragana is a dominant vegetation for combating land desertification.Mature Caragana not only adapts well to desert environments,serving as a windbreak and sand stabilizer,but young Caragana during its flowering and leafing stages also possesses high nutritional value,making it an excellent source of livestock feed.Drawing on the widespread application of reciprocating cutting in agricultural and pastoral harvesting,this study focuses on young Caragana to address the harvesting difficulties caused by its insufficient rigidity in traditional methods.The irregular Caragana branches were simplified into idealized cylindrical shapes,and a reciprocating cutting model for fresh Caragana was established in LS—DYNA.The cutting angle,feed speed,and average cutting speed were selected as influencing factors,with peak cutting force as the experimental indicator for simulation.Response surface optimization results indicate that the optimal cutting parameters for Caragana are a cutting angle of 15°,a feed speed of 50 mm/s,and an average cutting speed of 0.5 m/s,yielding the smallest peak cutting force and the best stubble cutting effect.These findings provide data references for the subsequent development of reciprocating cutting equipment for young Caragana.