两层计算机堆码包装动力学试验研究

发布时间：2018-06-06 19:24

本文选题：堆码包装 + 随机振动　；参考：《机械工程学报》2017年03期

【摘要】：通过正弦扫频和随机振动试验,研究了不同输入加速度谱谱型、不同振动等级和不同预压力条件下两层计算机堆码包装的动力学响应规律,采用加速度传感器和I-Scan系统分别测取产品的加速度响应和纸箱间的动压力响应。正弦扫频结果表明,预压力对堆码系统的共振频率、计算机共振加速度响应和纸箱动压比峰值均有明显影响。随机振动试验结果表明:上层计算机的加速度功率谱主要受一阶共振频率控制,下层计算机的加速度功率谱受一阶和二阶共振频率共同控制,上层计算机在一阶共振区域的加速度响应比下层计算机要大得多;堆码包装系统产品响应主要受制于系统共振区域的激励谱谱值,而非共振区域的激励能量对其影响很小;纸箱动压力功率谱主要受一阶共振频率控制,纸箱动压力的力水平穿越分布为Weibull分布;增大堆码预压力可有效抑制纸箱侧向运动,同时会使纸箱经历一个更大、更宽的力水平。
[Abstract]:By means of sinusoidal sweep frequency and random vibration test, the dynamic response of two-layer computer stacking packaging under different input acceleration spectrum types, different vibration grades and different pre-pressure conditions is studied. The acceleration response of the product and the dynamic pressure response between the cartons were measured by acceleration sensor and I-Scan system respectively. The results of sinusoidal sweep show that the pre-pressure has a significant effect on the resonance frequency, the resonance acceleration response of the computer and the peak value of the dynamic pressure ratio of the carton box. The results of random vibration test show that the acceleration power spectrum of the upper computer is mainly controlled by the first order resonance frequency, and the acceleration power spectrum of the lower computer is jointly controlled by the first and second order resonance frequencies. The acceleration response of the upper computer in the first order resonance region is much greater than that of the lower computer, and the product response of the stacking packaging system is mainly restricted by the excitation spectrum value of the system resonance region, but the excitation energy of the non-resonant region has little effect on it. The power spectrum of dynamic pressure of carton is mainly controlled by the first order resonance frequency, the horizontal force of dynamic pressure of carton is Weibull distribution, and the lateral motion of carton can be effectively restrained by increasing the prepressure of stacking code, and the carton will experience a larger and wider force level.
【作者单位】：暨南大学包装工程研究所;暨南大学产品包装与物流广东普通高校重点实验室;暨南大学珠海市产品包装与物流重点实验室;
【基金】：国家自然科学基金(50775100) 珠海市重点学科、重点实验室资助项目
【分类号】：TB48

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