【作者】 李星照； 李朋洲； 孙磊；

【Author】 LI Xing-zhao;LI Peng-zhou;SUN Lei;Nuclear Power Institute of China;

【机构】 中国核动力研究设计院；

【摘要】 作为对功率流落差和振级落差两种评价指标之间关系的探讨,本文通过对隔振装置的功率流落差公式进行简化分析,给出了一种仅采用振动系统测点响应即可近似表征功率流落差的表达式,然后将之与振级落差公式进行对比分析,提出了带有权重因子的振级落差计算方法,并采用有限元方法进行了计算和验证。有限元分析结果表明,在非高频区域,功率流落差公式的简化结果和近似表达式均是准确合理的,振级落差曲线在赋予代表力因素的权重因子后与功率流落差曲线更为接近。更多还原

【Abstract】 As discussing the relation between power flow difference and vibration level difference,the simplification of power flow difference expression of vibration isolation devices leads to an expression which shares the same characteristics with power flow difference by using only vibration response,for example,vibration displacement,and by the comparison of the new expression and the one of vibration level difference,the article puts forward a new calculating method of vibration level difference with the consideration of weight factor.The FEM results show that in the not very high frequency region,both the simplification and approximation of power flow difference expression are reasonable and the vibration difference curve is more similar to the curve of power flow difference when mixed with a coefficient on behalf of force factor.更多还原