Application of PSO-SA algorithm in underwater structure exciting force source identification

作者：Xiao, Yan; Shang, De-Jiang

来源：Journal of Vibration and Shock, 2016, 35(12): 226-232.

DOI：10.13465/j.cnki.jvs.2016.12.036

• Forecast accuracy
• Identification method
• Matched field processing
• PSO-SA
• Searching algorithms
• Source identification
• Source strength
• Structural acoustic radiation

An identification method by MFP is proposed for exciting the force source inside an underwater structure, and a concept of generalized copy field based on the structural acoustic radiation field is established. The particle-swarm optimization-simulated annealing (PSO-SA) algorithm is adopted for searching the optimum force source strengths. A single cylindrical shell in an underwater free field is selected as the investigated subject, and the sound radiation transfer function copy field is numerically calculated. The matched searching algorithm is simulated. The vibration and radiation sound pressures of the actual single cylindrical shell are measured in the anechoic tank. The measurement result and the numerical copy field are matching processed to search the optimum source strength. Both the simulation and the experiment results show that this method is effective for analyzing the source intensity. Moreover, the forecast accuracy is high when using the source-matching identification results to predict the radiation sound pressures.

• 出版日期2016-6-28
• 单位哈尔滨工程大学