摘要
水锤的冲击力常常造成管道的振动破坏,影响管道的安全使用。以一种类弹簧管道结构为研究对象,从不同载荷端输入相同的水锤冲击,来模拟阀门的开启和关闭产生的水锤影响。采用ANSYS/LS-DYNA程序,对该管道系统在水锤冲击力作用下,在空气和水中的响应情况进行了数值模拟。结果表明,系统受到水锤冲击后速度和位移响应很快衰减;从柔性端输入时,系统响应更剧烈,振动持续时间也更长,这点和以前实验观察到的结果相同。
Water hammer often happens in liquid-pipelines, and impulsive forces of water hammer often damage pipelines and affect the safety of pipeline systems. In this paper, one spring-pipeline is studied. The ANSYS/LS-DYNA, a finite-element codes, is used to simulate the response of pipelines under impulsive force. The response of pipes within the air and the water are compared. The results show that the velocity and displacement are quickly declined within the water. Though importing the same water hammer force in inlet and outlet, the results show that the system responsed from the flexible pipe are stronger and the vibration time is also longer. The results are the same as the previous experimental ones.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2008年第6期25-29,共5页
Nuclear Power Engineering
关键词
水锤
冲击力
弹簧管道
速度响应
Water hammer, Impulsive force, Spring-pipelines, Velocity response
