苹果梨静载机械特性的研究

Research on Mechanical Properties of Apple-pears under Static Loading

本实验针对苹果梨在采摘、储运及深加工的各环节中可能出现的由于砸、摔、挤压以及相互间的碰撞等机械胁迫作用造成的机械损伤以及深加工过程中的切片、压榨问题进行了静载机械特性研究。实验结果表明,果实受压时的生物屈服极限和破坏极限随压缩速率增大而相应增大;体积及成熟度较大的果实受压时均较早进入屈服状态并易发生破裂。果实肉质结构的各向异性使不同部位受压产生明显的差异性,赤道部位的抗压性明显低于果梗周围,实验结果为果实深加工机械参数的设计提供了理论基础。

Solve both the problem of mechanical damage caused by compressing, impacting and dropping down to ground during harvest, transportation and storage, and the problem of cutting slice and pressing during the process of by-products, the mechanical properties were tested. The results showed that there is a maximum in both yield force and break force with increasing loading rate; The more mature degree and the larger size, and the micro tissues of fluits more easily are destroyed and more easily break; The properties of anti-compression of the flesh around equator are lower than that of the other positions. The results provide a theoretical basis for the design for parameters processing machines improved.