大型浮吊光纤光栅称重传感器弹性体研究

Study on the Elastomer of FBG Weighed Sensor for Large Floating Crane

提出了新型光纤光栅高负荷称重传感器弹性体复合结构模型,通过对等强度梁光纤光栅称重传感器结构设计原理的分析,采用ANSYS对称重传感器弹性体结构进行仿真计算;在恒定外载荷下,比较分析不同硬心直径、弹性体厚度对应力状态和径向位移的影响,并与试验结果相互印证。结果表明:当弹性体硬心直径为75mm,厚度为10mm时,弹性体可以满足称重传感器高负荷动态测量的要求。近1年在2 600t大型船用浮吊上的高负荷动态测量表明了文中研究的有效性与实用性。

A novel model of high-loading complex structure FGB sensor are presented, through the analysis of the structure design principle of the cantilever beam optical fiber grating weighed sensor, using the ANSYS to simulate and calculate the structure of the sensor＇s elastomer. Under the constant-load, comparing and analysing the different changes of the stress state and the radial displacement, caused by different thickness of elastomer and diameter of hard center, finds that, when the elastic thickness is 10 mm and the hard center diameter is 75 mm, the designed elastomer meets the application of weighed sensor for large crane, the experimental results of loading/unloading experiment verificates the conclusion of ANSY$. This sensor has been used in the 2 600 t large marine floating crane for the dynamic measurement of high-loading almost a year, this shows the effectiveness and practicality of this research.