摘要
某型船用低速机在试航时发现,扫气集管单向阀发生逆向凹陷,造成密封不严,使主机启动和正常工作时扫气集管内的压力偏低,影响主机的工作。通过采用Abaqus等有限元软件,对单向阀模型进行了碰撞分析和静力学分析,结果显示在单向阀特定工况下,最大应力主要分布在簧片中心区域,碰撞过程中的最大应力小于材料的屈服强度;静态分析显示,最大应力位于主要分布于簧片平板中心区域,且大于材料的屈服强度。根据仿真结果提出了增大簧片厚度的优化方案,为单向阀的设计提供一定参考。
Scavenge non-valve happened to retrorse sunken,which is found during a vessel＇s trial voyage,make sealing failure and then decrease the scavenging pressure,which is need for a low-speed vessel engine to restart and work normally. Collision analysis and static analysis are made with the usage of Abaqus,results show that maximal strain distribute mainly on the center area of the flap during certain operating condition. Maximal strain in collision process is smaller than the material＇s yield strength. Static analysis results also show that maximal strain distribute mainly on the center area of the flap,but its result is bigger than the material＇s yield strength. On the basis of analysis results,several optimization programs are analysed,which would offer some references for the non-valve design.
出处
《装备制造技术》
2017年第7期31-34,共4页
Equipment Manufacturing Technology
关键词
单向阀
碰撞分析
静态分析
优化方案
non-valve
collision analysis
static analysis
optimization program
