Sound field in a car’s irregular enclosed cavity under structural excitation was researched by the advanced Trefftz analytic method. Combining with the acoustic structure coupling and using a weighted residual formulation to deal with the boundary condition, the analytical solution expression of the progressional expanded wave function was obtained, and the prediction analysis solution at mid-low frequency was given. The active noise control model for the cavity was established. The feasibility of the method was proved by mathematical simulation result using Matlab.
范成高,陈南,张肃.基于改进Trefftz解析法的封闭空腔噪声有源控制[J].动力学与控制学报,2006,4(4):380~384; Fan Chenggao, Chen Nan, Zhang Su. Enclosed cavity noise active control by advanced Trefftz analytic method[J]. Journal of Dynamics and Control,2006,4(4):380-384.