CAJ | 학술논문

为研究猕猴桃压缩力学行为,对其进行了压缩试验,得到了力-变形曲线,分析了压缩过程中的变形行为.结果表明,不同的加载速率影响破裂载荷的大小和变形特征;随着加载速率的增加,破裂载荷有所增大;在力-变形曲线上有明显的锯齿流变现象,锯齿频率和应力变化幅度受应变率的影响.同时通过压缩试验对猕猴桃的蠕变行为进行了分析,给出了蠕变-时间曲线.该研究可为猕猴桃的运输、加工、贮藏等提供重要的力学参数.
위연구미후도압축역학행위,대기진행료압축시험,득도료력-변형곡선,분석료압축과정중적변형행위.결과표명,불동적가재속솔영향파렬재하적대소화변형특정;수착가재속솔적증가,파렬재하유소증대;재력-변형곡선상유명현적거치류변현상,거치빈솔화응력변화폭도수응변솔적영향.동시통과압축시험대미후도적연변행위진행료분석,급출료연변-시간곡선.해연구가위미후도적운수、가공、저장등제공중요적역학삼수.
The paper aimed to study compression mechanical behaviors of kiwifruits. The force-deformation curves were obtained by compression tests of the kiwifruits, and the deformation behavior was analyzed. The results showed that different loading speeds had effects on rupture force and deformation property. With the increase of loading speed, the rupture force increased. Simultaneous serrations can be found on the force-deformation curves, and the changes of frequency and amplitude of serrated flow were dependent on the loading speed. Moreover, the Creep behavior of the kiwifruit was experimentally studied in details by compression, resulting in the creep-elapsed time curve, which provided mechanical parameters for transportation, procession and storage.