Estudio de la influencia de la adicion de fibras en la rotura en modo II de materiales cuasifragiles
DYNA(2022)
摘要
Fracture of quasi-brittle materials, such as concrete or gypsum, has been studied for decades. These studies have given light on the fracture mechanisms as well as on the parameters that drive these processes, allowing producing numerical models that reproduce fracture using tools such as the Finite Element Analysis. On another note, the three possible Modes of fracture that can be identified in the field of Fracture Mechanics, Mode I is very well known, experimentally reproduced and used as the base for most numerical models. Nevertheless, in some cases fracture takes place as a combination of a stress state that induces a fracture mechanism where Modes I and II are involved. In this sense, Mode II fracture has been studied less often, partly because Mode I fracture is more usual, but also because reproducing Mode II experimentally is quite more complex. This study is focused on inducing Mode II fracture on fibre-reinforced gypsum specimens by using two different experimental tests. More specifically, the experimental test proposed by the Japanese standards JSCE and the push-off test are employed. The displacement field is obtained by means of the digital image correlation technique (DIC), which helps to understand how fibres modify the fracture mechanisms of the gypsum matrix when this takes place under Mode II conditions.
更多查看译文
关键词
Fibre-reinforced gypsum, Mode II fracture, Push-off test, Shear test, Digital image correlation
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要