Numerical Analysis of Electromagneto-Mechanical Coupling Dynamic Response of a Typical Tokomak Structure

In an effort to simulate the dynamic behavior of a non-ferromagnetic conducting structure with consideration of the magnetic damping effect,a finite element code is developed,which is based on the reduced vector potential (Ar) method,the step-by-step integration algorithm and a time-partitioned strategy.An additional term is introduced to the conventional governing equations of eddy current problems to take into account the velocity-induced electric field corresponding to the magnetic damping effect.The TEAM-16 benchmark problem is simulated using the proposed method in conjunction with the commercial code ANSYS.The simulation results indicate that the proposed method has better simulation accuracy,especially in the presence of a high-intensity external magnetic field.     

管道系统金属橡胶支吊架性能实验研究

管道支吊架是管道系统振动传递的重要途径,针对核动力管道支吊架多为刚性连接的现状,设计了一种金属橡胶支吊架,对多支吊架性能进行了实验分析研究,通过对实验数据的比较与分析,掌握了该型支吊架的力学性能,并通过隔振实验说明该结极对管道振动具有一定的抑制作用,该研究对一回路管道系统的振动控制具有一定的适用性。     

基于斜支承结构的大承载低频硬隔振设备支承研究

针对核能设备大承载、低频隔振需求及核岛内特殊的工作环境,利用典型斜支承结构的几何非线性,设计了一种具有较大承载能力的金属硬隔振支承结构。通过数值计算得到了该结构在额定载荷下的变形量,验证了结构强度。基于动力学理论建立了动力学模型,通过振级落差分析其隔振效果、优化结构参数,并加工了结构样机,通过实机减振试验验证了结构的隔振效果。研究结果表明,该结构在保证承载能力的前提下,具有良好的隔振效果,可为相关隔振结构的设计提供参考。