宋卫生,李菲,李自刚.碳酸饮料瓶爪瓣式瓶底结构力学性能研究[J].包装工程,2018,39(1):35-39.
SONG Wei-sheng,LI Fei,LI Zi-gang.Mechanical Properties of the Petaloid Bottom Structure of Carbonated Beverage Bottle[J].Packaging Engineering,2018,39(1):35-39. |
| 碳酸饮料瓶爪瓣式瓶底结构力学性能研究 |
| Mechanical Properties of the Petaloid Bottom Structure of Carbonated Beverage Bottle |
| 投稿时间：2017-06-09 修订日期：2018-01-10 |
| DOI： |
| 中文关键词: 爪瓣式瓶底 应力开裂 几何参数 最大主应力 |
| 英文关键词: petaloid bottom stress cracking geometrical parameter maximum principal stress |
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| 中文摘要: |
| 目的 研究碳酸饮料瓶爪瓣瓶底几何形状参数对瓶底应力开裂现象的影响规律。方法 通过加速应力开裂测试观察瓶底的应力开裂现象；通过单因素试验分别分析凹槽底部圆弧直径、凹槽侧壁张角、凹槽深度以及爪瓣数量对最大主应力最大值的影响规律；通过全因素实验研究对比4个几何参数对最大主应力最大值影响的显著性。结果 通过单因素试验，发现随着凹槽侧壁张角、凹槽底部圆弧直径以及爪瓣数量的增大，最大主应力的最大值均呈现下降的态势，而表示凹槽深度4个数据的分析结果则呈现虽深度增加但最大主应力的最大值均增加的态势。全因素实验证实这4个参数中只有槽底圆弧直径、凹槽数量以及凹槽深度对瓶底最大主应力的最大值有显著的影响。另外，凹槽深度、凹槽数量分别与槽底圆弧直径的交互效应呈现出显著影响。最后拟合了瓶底最大主应力的最大值与影响显著的几何参数之间的回归方程。结论 在厚度均匀的前提下研究了几何结构的相关参数对应力开裂的影响及规律，厚度变化及厚度分布的变化对应力开裂的影响还需进一步研究。 |
| 英文摘要: |
| The work aims to study the influence of geometry parameters of carbonated beverage bottle`s petaloid bottom on the bottle bottom`s stress cracking. The stress cracking at the bottom of the bottle was observed by accelerated stress cracking test. The influences of the arc diameter at the bottom of groove, the side wall opening angle of the groove, the groove depth and the petaloid number on the maximum value of the maximum principal stress were respectively analyzed through single factor experiment. The significance of the effects of 4 geometrical parameters on the maximum principal stress was studied by means of all-factor experiment. Through the single factor experiment, we found that the maximum value of the maximum principal stress showed a downward trend with the increase of the side wall opening angle of the groove, arc diameter at the bottom of the groove and the number of the petaloid; however, the analysis results of the 4 data indicating the groove depth showed a upward trend of the maximum value of the maximum principal stress although with the increase of the depth. The results of all-factor experiment showed that only the arc diameter at the bottom of the groove, the number of the grooves and the groove depth had a significant influence on the maximum value of the maximum principal stress of the bottle bottom. In addition, the interaction of the groove depth and the number of grooves respectively with the arc diameter at the bottom of the groove also had significant influence. Finally, the regression equation of the relationship between the maximum value of the maximum principal stress at the bottom of the bottle and the geometric parameters with significant influence was fitted. The influence of relevant geometrical parameters on the stress cracking and its law are studied on the condition of uniform thickness. It is necessary to study the influence of thickness change and thickness distribution on the stress cracking subsequently. |
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