基于数字图像相关法测定瓦楞纸板面内静态压缩泊松比  

Poisson’s Ration Calculation of Corrugated Paper Board Under in-Plane Static Compression Using Digital Image Correlation

作　　者：白海龙 陈南宁 刘争号 谢勇[1] BAI Hailong;CHEN Nanning;LIU Zhenghao;XIE Yong(College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007

出　　处：《包装学报》2020年第3期69-80,共12页Packaging Journal

基　　金：国家自然科学基金资助项目(61170101);中国包装联合会绿色包装与安全专项研究基金资助项目(2016ZBLY06)。

摘　　要：目前关于直接测定瓦楞纸板泊松比的方法鲜见报道,传统泊松比测试方法难以满足测试要求。针对传统方法的不足,提出使用数字图像相关法测量瓦楞纸板的泊松比,并选取面内静态压缩作为研究内容。选取4种瓦楞纸板,拍照记录面内压缩变形情况,将获得的变形照片导入MATLAB程序进行处理,获得瓦楞纸板面内静态压缩过程位移和应变分布情况,并计算出泊松比值。研究结果表明,E、BS、BD和BC型4种瓦楞纸板的泊松比值分别为-3.86,-0.42,-2.09和-1.49,负泊松比的出现主要与瓦楞纸板制备过程中芯层瓦楞起皱工艺以及纤维在压缩过程中发生取向变形有关。通过直接测定瓦楞纸板面内静态压缩的泊松比值,为瓦楞纸板泊松比测试提供了一种新方法,可为包装材料的选择和仿真分析提供参考。The method of direct determination of Poisson’s ratio about corrugated paperboard is rarely reported currently.However,traditional Poisson’s ratio test method is difficult to meet the test requirements.In view of the shortcomings of traditional methods,digital image correlation method was adopted to measure the Poisson’s ratio of corrugated board under in-plane static compression.The deformations were recorded of four kinds of corrugated board under in-plane compression.The obtained deformation photos were imported into MATLAB program for processing,so as to obtain the displacement and strain distribution for calculating the Poisson’s ratio under in-plane static compression.The results showed that Poisson’s ratios of E,BS,BD and BC corrugated paperboards were-3.86,-0.42,-2.09 and-1.49 respectively.The showing of negative Poisson’s ratio was mainly related to craft of corrugated paperboards and orientation deformation of fiber during compression.By directly measuring Poisson’s ratio of corrugated paperboards under in-plane static compression,a new way to get Poisson’s ratio of corrugated paperboard was provided.In addition,it could be of reference to packaging material selection and simulation analysis.

关 键 词：数字图像相关法 瓦楞纸板 泊松比 

分 类 号：TB487[一般工业技术—包装工程] TB484.1