【摘要】 采用脉冲激励法研究船用燃气轮机的挤压油膜阻尼器结构参数对其阻尼特性的影响规律。研究表明,阻尼器的有效长度、油膜半径间隙对其阻尼特性有较显著的影响,偏心率在0～0.3的范围内,其影响不大。另外,在试验过程中滑油的微小气泡及噪声信号对测试结果有一定的影响,脉冲激励对测试结果的影响则不大,同时也验证了本试验研究方案的可行性。更多还原

【Abstract】 By using the pulsation excitation method,studied was the law governing the influence of the structural parameters of an excruded oil film damper in a marine gas turbine on its damping characteristics.The research results show that the effective length and the oil film radius clearance of the damper have a remarkable influence on the damping characteristics.However,when the eccentricity is in a range of 0-0.3,such an influence is not big.Furthermore,the tiny bubbles and noise signals in the oil film during the test process have certain influence on the test results while the pulsation excitation has little influence.In the meantime,the feasibility of the present test and study scheme was also verified.更多还原