【摘要】：為提高磁流變阻尼器在海洋工程復雜環(huán)境下的動力學性能,研究太陽熱輻射對磁流變阻尼器表面溫升的影響。分析阻尼器的溫升原理,結合磁場有限元仿真建立磁流變阻尼器內部做功與外部熱輻射混合作用的表面溫升模型,采用四階Runge-Kutta方法求解方程;搭建以電阻式熱電偶測量表面溫度的阻尼動力學試驗平臺,并對影響溫升的主要參數(shù)進行相關性分析。研究表明,所建溫升模型和方法可用于預測阻尼器表面熱輻射影響下的實際溫升狀態(tài),當表面溫度為60℃~85℃時,阻尼力衰減達10%~12%,3 000 s時間太陽熱輻射導致溫度升幅2.7%。長時間熱輻射將對阻尼器減振性能產生較大影響,增大阻尼器缸筒有效面積和相對空氣流速可降低表面溫升。
[Abstract]:In order to improve the dynamic performance of magnetorheological dampers in ocean engineering, the effect of solar thermal radiation on the surface temperature rise of Mr dampers is studied. Based on the analysis of the temperature rise principle of the damper, the surface temperature rise model of the magnetorheological damper is established based on the finite element simulation of magnetic field. The fourth-order Runge-Kutta method is used to solve the equation. A damping dynamic test platform for measuring surface temperature with resistance thermocouple is set up, and the correlation analysis of the main parameters affecting temperature rise is carried out. The results show that the temperature rise model and method can be used to predict the actual temperature rise state under the influence of surface heat radiation. When the surface temperature is 60 鈩，

本文編號：2456465