本文選題：船舶 + 扭振　； 參考：《中國艦船研究院》2014年碩士論文

【摘要】：船舶軸系扭振是影響船舶安全運行和舒適運行的重要因素。為此，，世界各國投入了大量人力和物力，來研究船舶軸系扭振產(chǎn)生的機理，并尋找監(jiān)測和減小船舶傳動軸系扭振的方法。伴隨著電子技術的發(fā)展，在軸系扭振的監(jiān)測方法上取得了較大的進展，出現(xiàn)了多種新型測量方法。本文立足于我所自主研制的扭振仿真實驗平臺，結合中國船級社（CCS）的扭振應力測試規(guī)范，研究適合船舶領域的軸系扭振應力測試技術。 本文分析了柴油機扭振機理和傳動軸系扭振機理，提出了針對船舶軸系的扭振測量方法。即先測量轉速，然后通過后續(xù)高通濾波和數(shù)字積分技術實現(xiàn)扭振角位移的測量，并在DEWEsoft軟件平臺上對該測量原理進行了驗證。 針對一般扭振測量裝置不能實現(xiàn)船舶軸系扭振應力實時監(jiān)測的問題，搭建了硬件系統(tǒng)，并在DEWEsoft軟件平臺上繪制了扭振應力限制曲線，根據(jù)扭振計算書將測得的扭振角位移轉化為扭振應力，從而實現(xiàn)了軸系扭振應力的實時監(jiān)測，并且在分析方法上增加了階次跟蹤分析方法。 在驗證方法上，利用扭振仿真實驗平臺，模擬實船轉速工況，對開發(fā)的扭振應力監(jiān)測系統(tǒng)做了驗證性試驗，試驗中對轉速和扭振角位移進行了實測，試驗結果表明：在各轉速工況下，該扭振應力測試系統(tǒng)的測試結果與仿真實驗平臺的測試結果吻合較好。最后，進行了實船測試試驗，達到了較好的測試效果。
[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.
【學位授予單位】：中國艦船研究院
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U664.21

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本文編號：1954452