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Experimental and analytical study on uniaxial tensile property of ionomer interlayer at different temperatures and strain rates
Construction and Building Materials ( IF 7.4 ) Pub Date : 2020-07-13 , DOI: 10.1016/j.conbuildmat.2020.120058
Suwen Chen , Yujia Lu , Yang Zhang , Xiao Shao

The ionomer material is widely used as interlayers in the laminated glass, and its tensile property plays a decisive role in the post-fracture response of the laminated glass. Since the ionomer material is a kind of polymer, its mechanical behaviour is highly affected by strain rate and temperature. In this work, two series of uniaxial tensile tests, low strain rate series (10−3s−1~10−1s−1) and medium to high strain rate series (1 s−1~800 s−1), were conducted over a wide temperature range (−40 °C~80 °C). Details of the test setup and corresponding true stress-true strain curves are presented. Characteristic mechanical parameters are then identified to evaluate the temperature and strain rate effects. It was found that higher strain rate and lower temperature result in higher strength and stiffness but lower ductility. The material shows apparent plasticity as more than 80% deformation is unrecoverable. Based on the observations, G’Sell model is adopted to build the temperature-dependent dynamic constitutive model, which is then validated through comparison between the predicted results and the published test data.



中文翻译:

离聚物夹层在不同温度和应变速率下的单轴拉伸性能的实验和分析研究

离聚物材料被广泛用作夹层玻璃中的中间层,并且其拉伸性能在夹层玻璃的断裂后响应中起决定性作用。由于离聚物材料是一种聚合物,因此其机械性能受应变速率和温度的影响很大。在这项工作中,两个系列的单轴拉伸测试中,低应变速率系列(10 -3小号-1〜10 -1小号-1)和中到高应变率系列(1秒-1〜800个小号-1)在较宽的温度范围(−40°C〜80°C)内进行。给出了测试设置的详细信息以及相应的真实应力-真实应变曲线。然后确定机械特性参数,以评估温度和应变率的影响。发现较高的应变速率和较低的温度导致较高的强度和刚度,但较低的延展性。该材料表现出明显的可塑性,因为无法恢复超过80%的变形。在此基础上,采用G'Sell模型构建温度相关的动态本构模型,然后通过比较预测结果和已发布的测试数据进行验证。

更新日期:2020-07-14
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