| 李斌,杨国标*,倪凡,朱启荣.新型汽车结构胶剪切实验研究[J].实验力学,2010,25(1):16~21 |
| 新型汽车结构胶剪切实验研究 |
| Experimental study of Structural Adhesive Shear for New Style Automotive |
| 投稿时间：2009-09-17 修订日期：2009-12-22 |
| DOI： |
| 中文关键词: 汽车结构胶 剪切试验 数字图像相关方法 非接触测量 |
| 英文关键词:automotive structural adhesive shear test DICM non-contact measurement |
| 基金项目: |
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| 摘要点击次数: 731 |
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| 中文摘要: |
| 利用数字图像相关方法(DICM)，分别测定了准静态单向剪切拉伸试验条件下，新型汽车结构胶粘接试件和传统点焊连接试件粘接部分的剪切力学性能。实验采用了非接触测量物体应变的方法，运用CCD及其计算机图像处理系统，实时获取变形前后试件表面图像。利用数字相关软件对变形前后的图像进行分析,从而获得试件该时刻的应变。最后确定了试件拉伸过程中的力-位移曲线及应力-应变关系曲线。测试结果及分析表明:采用新型结构胶粘接试件的力学性能与点焊结构相比有明显的优势。这为该结构胶进一步改进提供了一定的实验依据。测试中的数字图像相关法是非接触测量物体应变的方法，在实际应用中有很大的意义。 |
| 英文摘要: |
| In this paper, digital image correlation method (DICM) was employed to measure the shear behavior of the traditional spot welding specimens and the ones using structural adhesive under quasi-static lap shear testing. The real-time images of specimens’ surfaces were captured based on CCD and corresponding computer system. DICM was subsequently used to obtained strain by correlating the images captured before and deformation obtained later. Then, both force-displacement curves and stress-strain curves of the specimens including cracking load were obtained. Results and analysis show that compared with the spot welding specimens, the mechanical properties of specimens using adhesive have obvious advantage. This paper provides some experimental basis for improving this new type of structural adhesive. In this experiment, the method of non-contact measurement was used to obtain the strain. It has greater significance. |
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