| 水射流破碎水泥路面的微结构损伤模型及仿真 |
| |
| 引用本文： | 李万莉,徐宝富,申燚.水射流破碎水泥路面的微结构损伤模型及仿真[J].同济大学学报(自然科学版),2005,33(1):42-46. |
| |
| 作者姓名： | 李万莉 徐宝富 申燚 |
| |
| 作者单位： | 1. 同济大学,机械工程学院,上海,200092
2. 淮阴工学院,机械工程系,江苏,淮阴,223000 |
| |
| 摘 要： | 研究了水射流对水泥混凝土路面的破碎机理．利用细观损伤力学理论建立了水射流作用下水泥路面碎裂的微结构损伤模型，用有限元方法求解模型，得到了不同压力和速度的射流作用到水泥混凝土表面时在混凝土路面板块中产生Von—Mises等效应力．当表面冲击压力为144MPa时，达到混凝土临界破坏点．计算结果与实验结果的一致验证了模型的正确性。
|
| 关 键 词： | 路面破碎 水射流 有限元法 冲击压力 |
| 文章编号： | 0253-374X(2005)01-0042-05 |
Damage Model and Simulation of Microcrack-weakened Concrete Road Slab under Water-jet |
| |
| LI Wan-li,XU Bao-fu,SHEN Yi.Damage Model and Simulation of Microcrack-weakened Concrete Road Slab under Water-jet[J].Journal of Tongji University(Natural Science),2005,33(1):42-46. |
| |
| Authors: | LI Wan-li XU Bao-fu SHEN Yi |
| |
| Institution: | LI Wan-li1,XU Bao-fu1,SHEN Yi2 |
| |
| Abstract: | Studies on the mechanism of water-jet demolishing concrete road slabs have be done.A new damage model of microcrack-weakened concrete road slab was developed.Relationship between impacting pressure and min.Von-Mises stress is gained by simulating the demolishment process of concrete road slabs along with different jetting pressure and speed by means of finite element method.As jetting pressure is up to 144 MPa,the critical demolishing point appeared.The conformity of the result from calculation with that from test verified the legitimacy of this model. |
| |
| Keywords: | concrete road slabs demolishment water-jet finite element method impacting pressure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
