摘要
目的研究堆码产品的缓冲包装在连续复杂运输工况下的受到振动冲击后的疲劳损伤。方法采用Miner准则、Dirlik法和Steinberg三区间法,并结合Workbench和ncode疲劳分析模块建立2层堆码模型进行有限元仿真,通过不同工况的振动激励来模拟缓冲包装在复杂连续工况下的振动疲劳损伤并得出对应的疲劳结果云图和疲劳寿命云图。结果复杂工况下瓦楞外包装的疲劳寿命为9.26×10^(9),最大节点处的损伤值为1.08×10^(−10),EVA内缓冲衬垫的疲劳寿命为1.882×10^(14),最大节点处的损伤值为5.313×10^(−15)。堆码包装模型的易损点主要集中于内外缓冲包装的边角和楞边区域。通过Dirlik和Steinberg方法证明了缓冲件在经历16 h的复杂运输工况下的剩余寿命为2.6×10^(4) h和9.198×10^(5) h,利用Miner准则证明了缓冲包装结构对内部产品可以起到良好的保护作用。结论通过该种方法可以对堆码包装在复杂工况下进行可靠的疲劳寿命分析,并对堆码包装产品在进行多工况运输时的工况选择,以及结构上的优化设计提供了建议和参考思路。
The work aims to study the fatigue damage of cushion packaging of stacked products after vibration and shock under continuous complex transportation conditions.Miner’s rule,Dirlik's method and Steinberg’s three-interval method,combined with Workbench and ncode fatigue analysis module,were used to build a two-layer stacked packaging model for finite element simulation.The vibration fatigue damage of cushion packaging under complex continuous working conditions was simulated by vibration excitation under different working conditions and the corresponding fati-gue result and fatigue life cloud diagram were obtained.Under complex working conditions,the fatigue life of corrugated packaging was 9.26×10^(9) and the damage value at the maximum node was 1.08×10^(−10).The fatigue life of EVA internal cushion liner was 1.882×10^(14) and the damage value at the maximum node was 5.313×10^(−15).The vulnerable points of stacked packaging model were mainly concentrated at the corners and edges of internal and external cushion packaging.Dirlik and Steinberg methods were used to prove that the residual life of the cushion was 2.6×10^(4) h and 9.198×10^(5) h under the complex transportation condition for 16 h.The Miner’s rule was used to prove that the cushion packaging structure could play a good role in protecting the internal products.By this method,the fatigue life of stacked packaging can be analyzed reliably under complex working conditions,and some suggestions and reference ideas are provided for the selection of working conditions and the optimal design of structure of stacked packaging products during transporta-tion under multiple working conditions.
作者
曾台英
周龙炎
江海林
ZENG Tai-ying;ZHOU Long-yan;JIANG Hai-lin(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《包装工程》
CAS
北大核心
2022年第5期159-166,共8页
Packaging Engineering
基金
高水平大学科建设医工交叉创新项目(10-20-309-402)。
关键词
堆码包装
复杂运输工况
频谱分析
疲劳寿命
stacked packaging
complex transportation condition
spectral analysis
fatigue life
