本发明涉及一种船用推进器转子真实预应力下的模态参数试验测量方法,通过整个试验流程的设计,包括试验原理推导,试验设施及仪器的选择和布置,试验流程的安排,试验数据的处理等,最终实现测量船用推进器转子真实预应力下的模态参数这一目的。本发明提供的方法借助船舶与海洋工程领域常用的循环水槽或者拖曳水池等试验设施,通过设定推进器转子的所处流场的进流速度和自身转速,使转子处于和真实工作状态下相同的受力状态,与此同时进行模态参数的测量,从而准确获得转子在真实应力状态下的模态参数。相比于目前常用的船用推进器转子模态参数试验,本发明提供的测量方法更符合转子实际工作情况,测量结果具有更高的精确性和实用性。
The invention relates to a method for testing and measuring modal parameters of a ship propeller rotor under real prestress. The method comprises the following steps: designing a whole test flow, namely deducing a test principle, selecting and arranging test facilities and instruments, arranging the test flow, processing test data and the like, and finally, the purpose of measuring the modal parameters of the ship propeller rotor under the real prestress is achieved. According to the method provided by the invention, with the help of test facilities such as a circulating water tank or a towing tank commonly used in the ship and ocean engineering field, the rotor is enabled to be in a stress state the same as that in a real working state by setting the inflow speed and the rotation speed of the rotor of the propeller in a flow field, and meanwhile, modal parameters are measured, so that the modal parameters of the rotor in a real stress state can be accurately obtained. Compared with a common marine propeller rotor modal parameter test at present, the measurement method provided by the invention better conforms to the actual working condition of the rotor, and the measurement result has higher accuracy and practicability.
船用推进器转子真实预应力下的模态参数试验测量方法
2022-10-14
Patent
Elektronische Ressource
Chinesisch
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |