摘要
根据龙眼的几何尺寸和物理参数,用ANSYS软件建立了龙眼的力学模型。采用模型计算和试验测试相结合的方法,确定出龙眼果肉的弹性模量。通过对压缩载荷作用于龙眼蒂部和腰部的有限元分析,得出压缩载荷作用下龙眼内部的应力分布规律,探明了最大拉应力是龙眼宏观破裂的主要原因。
Based on geometric shape and physics parameters of longan fruit,the mechanical model of single longan was established.The module of elasticity of longan flesh was determined by means of comparing the calculated results on the mechanical model with the experimental results.By finite element analysis on longan under the compressed load with the pedicel and middle,the stress distribution of inner longan was obtained.The results showed the maximal tensile stress was the main factor causing the macroscopic breakage form of longan skin.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第6期143-147,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
广东省自然科学基金资助项目(9151001002000005)
高等学校博士学科点专项科研基金资助项目(20094404120002)
广东省人大议案课题(粤农函[2009]1099)
华南农业大学校长基金资助项目(2009K007)
关键词
龙眼
力学特性
有限元分析
弹性模量
拉应力
Longan
Mechanical properties
Finite element analysis
Modulus of elasticity
Tensile stress
