【摘要】 为满足某些对安全性能要求较高场合的使用要求,需要在研究冲击作用下柴油机排气消声系统的结构响应,确保系统在地震等突发冲击作用下的可靠性。运用ANSYS/LS-DYNA分析软件,计算了某柴油机排气消声系统在核电站运行基准地震(OBE)和安全停堆地震(SSE)作用下的结构响应和应力分布。结果表明,在地震冲击作用下,排气消声系统满足抗震要求,没有特殊的应力集中,整体结构设计基本合理。通过应力分布情况给出了结构设计的改进意见。更多还原

【Abstract】 For some special applications with high safety requirements,it is necessary to investigate the structural response of the diesel engine exhaust silencing system under earthquake to ensure the reliability.The ANSYS/LS-DYNA software is used to calculate the structural response of the diesel engine exhaust system under the excitation of the Operating Basis Earthquake(OBE) and the Safe-shutdown Earthquake(SSE).The numerical results showed that the system can fulfill with the safety requirement under the earthquake,and there is no special stress concentration,the overall structural design is reasonable.Some suggestions for improvement are given out through the stress analysis.更多还原