摘要
为优化设计缓冲包装件,以及减缓运输过程中由共振引起的哈密瓜贮藏品质下降,采用哈密瓜及其包装瓦楞纸箱作为研究对象,设置5层堆码高度,进行模拟运输变频振动试验,结合频谱分析加汉宁窗函数测定各堆码包装件的固有频率,随后进行模拟运输定频振动试验。结果表明,加汉宁窗函数有效提高了频谱分析精度,获得5层包装件的固有频率分别为9.88,54.75,10.06,10.31,10.42 Hz;10 Hz定频振动下,5层包装件的峰值加速度分别为5.99,3.18,6.37,6.56,6.81 g,振动传递率分别为53.61%,28.52%,57.07%,58.76%,61.02%;54.75 Hz定频振动下,5层包装件的峰值加速度分别为1.29,6.34,0.99,0.87,0.23 g,振动传递率分别为8.38%,45.04%,6.47%,6.04%,0.75%。研究为其他包装件寻求更精确的共振频率,从而为运输过程中有效避开共振频率,达到内装果品减损目的提供参考。
To optimize the design of cushioning packaging and slow down the quality decline of Hami melon during the storage caused by resonance during transportation,Hami melon and its packaging corrugated cartons were used as research objects,and five layers of stacking height were set to simulate vibration test at variable frequency during transportation combined with spectrum analysis plus Hanning window function to determine the natural frequency of each stacked packaging parts,followed by simulated fixed frequency vibration tests during transportation.The results show that adding Hanning window function effectively improves the accuracy of the spectral analysis;The natural frequencies of the 5-layer packaging parts are 9.88,54.75,10.06,10.31,and 10.42 Hz,respectively;Under 10 Hz fixed frequency vibration,the peak accelerations of the packaging parts in each layer are 5.99,3.18,6.37,6.56,6.81 g,vibration transmission rates of 53.61%,28.52%,57.07%,58.76%,61.02%respectively.Under the vibration at 54.75 Hz fixed frequency,the peak accelerations for each layer of packaging parts are 1.29,6.34,0.99,0.87,0.23 g,respectively,and vibration transmission rates are 8.38%,45.04%,6.47%,6.04%,0.75%,respectively.The research provides a reference for other packaging parts to seek more accurate resonance frequencies so as to effectively avoid the resonance frequency in the process of transportation and achieve the purpose of internal fruit damage reduction.
作者
张连文
谢晓定
武玉柱
张超
尚志勇
徐斌
李淳昊
ZHANG Lianwen;XIE Xiaoding;WU Yuzhu;ZHANG Chao;SHANG Zhiyong;XU Bin;LI Chunhao(Tianjin University of Commerce,Tianjin300134,China;Xinjiang Institute of Engineering,Urumqi830023,China;XinjiangAcademy of Agricultural Sciences,Urumqi830091,China)
出处
《包装与食品机械》
CAS
北大核心
2024年第1期1-6,共6页
Packaging and Food Machinery
基金
国家自然科学基金资助项目(31960490)
天津市研究生科研创新项目(2022SKYZ079)。
关键词
堆码包装件
哈密瓜
模拟运输
共振传递特性
加窗函数
固有频率
stacked packaging pieces
Hami melon
transport simulation
resonance transfer characteristics
window addition function
natural frequency
