| 摘要: |
| 用流变仪—电子计算机实时测定装置,测定和分析了猕猴桃果实的载荷——变形、蠕变及应力松驰等生物力学特性,并探讨了果实硬度和力学特性之间的相关性。结果表明:果实的压缩或压入强度及破断能均随贮藏时间的增加而减少;果实的蠕变和应力松驰现象,可分别用6单元Burgers模型和5单元Maxwell模型表示,力学模型的粘弹性系数随贮藏时间增加而发生变化;果实硬度和粘弹性模型的弹性系数及压缩或压入强度、破断能间有极显著的线性相关。 |
| 关键词: 猕猴桃,蠕变,应力松驰,果实硬度,粘弹性 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| A Study on Biomechanical Properties of Kiwi Fruit |
|
He Dongjian1 Gao Weiming2
|
| Abstract: |
| Rhemeter-the computer timing determination installation is used to determine and analyse biomechanical properties of Kiwi fruit including deformation, creep and stress relaxation and also to study the correlation relations between fruit hardness and mechanical properties. The results showed that the compression or compressive strength and rupture energy of fruit decreased with an increase in storage time; creep and stress relaxation of fruit were expressed with 6-element Burgers model and 5-element Maxwell model separately; vicosity and elasticity coefficients of mechanical model vary with an increase in storage time; fruit hardness, elasticity coefficients of mechanical model of viscosity and elasticity, compression or compressive strength and rupture energy were found to have a strong linear relation. |
| Key words: Kiwi, creep, stress relaxation, fruit hardness, viscosity and elasticity, |
