橡胶果破壳力学特性试验与分析  

Test and analysis of mechanical properties of rubber fruit shell breaking

作　　者：王远荣 王涛[1] 聂俊峰 WANG Yuan-rong;WANG Tao;NIE Jun-feng(College of Mechanical and Electrical Engineering,Hainan University,Haikou,Hainan 570228,China)

机构地区：[1]海南大学机电工程学院,海南海口570228

出　　处：《食品与机械》2019年第1期124-129,共6页Food and Machinery

基　　金：国家自然科学基金项目(编号:51465015)

摘　　要：为研究橡胶果在不同条件下静态压缩破壳力的变化规律,对橡胶果分别进行X、Y、Z 3个加载方向的剪切力、锥刺力、挤压力的静态压缩试验;运用有限元法建立橡胶果的力学模型,研究橡胶果在压缩载荷作用下应力应变情况及损伤规律。试验结果表明:橡胶果在剪切力、锥刺力、挤压力下的破壳力大小关系为F_(挤压力)>F_(剪切力)>F_(锥刺力);橡胶果较佳的加载方向为Y方向;试验中Ⅰ类、Ⅱ类、Ⅲ类橡胶果的挤压破壳力分别为0.548 0,0.564 5,0.715 1 kN,破壳力随着橡胶果尺寸的增加而增加;有限元分析出最佳加载方向为Y方向,与试验结果一致。In order to study the changing rule of static compressive shell breaking force of rubber fruit under different conditions, the rubber fruit was subjected to the static compression test of the shear force, stabbing force and extrusion force in the loading direction of X, Y and Z respectively. The mechanical model of rubber fruit was established by using finite element method to study the stress and strain and damage law of rubber fruit under compressive load. The test results showed that the relationship between the shell breaking force of the rubber fruit under shear force, stabbing force and extrusion force was extrusion force > shear force > stabbing force. The preferred direction of the rubber fruit was the Y direction, and the extrusion and shelling breaking forces of the Class Ⅰ,Ⅱ and Ⅲ rubber fruits in the test were 0.548 0 kN, 0.564 5 kN, and 0.715 1 kN, respectively.The shell breaking force increased with the increase of rubber fruit size. The finite element analysis showed that the best loading direction was the Y direction, which was the same as the test result.

关 键 词：橡胶果 力学特性 破壳 有限元 

分 类 号：TQ914.1[化学工程]