船舶轴系扭振应力测试技术研究

发布时间：2018-05-30 07:27

本文选题：船舶 + 扭振　；参考：《中国舰船研究院》2014年硕士论文

【摘要】：船舶轴系扭振是影响船舶安全运行和舒适运行的重要因素。为此，，世界各国投入了大量人力和物力，来研究船舶轴系扭振产生的机理，并寻找监测和减小船舶传动轴系扭振的方法。伴随着电子技术的发展，在轴系扭振的监测方法上取得了较大的进展，出现了多种新型测量方法。本文立足于我所自主研制的扭振仿真实验平台，结合中国船级社（CCS）的扭振应力测试规范，研究适合船舶领域的轴系扭振应力测试技术。本文分析了柴油机扭振机理和传动轴系扭振机理，提出了针对船舶轴系的扭振测量方法。即先测量转速，然后通过后续高通滤波和数字积分技术实现扭振角位移的测量，并在DEWEsoft软件平台上对该测量原理进行了验证。针对一般扭振测量装置不能实现船舶轴系扭振应力实时监测的问题，搭建了硬件系统，并在DEWEsoft软件平台上绘制了扭振应力限制曲线，根据扭振计算书将测得的扭振角位移转化为扭振应力，从而实现了轴系扭振应力的实时监测，并且在分析方法上增加了阶次跟踪分析方法。在验证方法上，利用扭振仿真实验平台，模拟实船转速工况，对开发的扭振应力监测系统做了验证性试验，试验中对转速和扭振角位移进行了实测，试验结果表明：在各转速工况下，该扭振应力测试系统的测试结果与仿真实验平台的测试结果吻合较好。最后，进行了实船测试试验，达到了较好的测试效果。
[Abstract]:Torsional vibration of ship shafting is an important factor affecting the safe and comfortable operation of ship. Therefore, many countries all over the world have invested a lot of manpower and material resources to study the mechanism of ship shafting torsional vibration, and to find a method to monitor and reduce the ship shaft torsional vibration. With the development of electronic technology, great progress has been made in the monitoring method of shaft torsional vibration, and many new measuring methods have appeared. Based on the experimental platform of torsional vibration simulation developed by our institute and combined with the torsional vibration stress test standard of CCS, this paper studies the testing technology of torsional vibration stress of shafting suitable for ship field. In this paper, the torsional vibration mechanism of diesel engine and the torsional vibration mechanism of transmission shaft system are analyzed, and the torsional vibration measurement method for ship shafting is put forward. The rotation speed is first measured, and then the torsional vibration angular displacement is measured by high-pass filtering and digital integration technique. The principle of the measurement is verified on the DEWEsoft software platform. Aiming at the problem that the general torsional vibration measuring device can not realize the real-time monitoring of ship shafting torsional vibration stress, a hardware system is built, and the torsional vibration stress limiting curve is drawn on the platform of DEWEsoft software. According to the torsional vibration calculation book, the measured angular displacement of torsional vibration is transformed into torsional vibration stress, thus the real time monitoring of torsional vibration stress of shafting is realized, and the order tracking analysis method is added to the analytical method. In the verification method, the torsional vibration stress monitoring system is tested by using torsional vibration simulation platform to simulate the rotating speed of ship, and the rotational speed and angular displacement of torsional vibration are measured. The experimental results show that the test results of the system are in good agreement with those of the simulation platform under various rotational speed conditions. Finally, the actual ship test is carried out and the test results are satisfactory.
【学位授予单位】：中国舰船研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U664.21

【参考文献】