CAJ | 학술논문

分析了混合TPA的计算方法，即将传统TPA方法，与有限元模型仿真计算所得传递函数相结合，以达到减少计算工作量、缩短实验周期。论文针对某车型传动系统扭振引起的车内轰鸣问题，搭建混合传递路径分析模型，在准确识别副车架与车身耦结合处载荷力的基础上，确认贡献量较大的传递路径，并将各传递路径对目标点的声压贡献量进行矢量叠加，拟合出车内目标点声压谱图。分析得到的目标点噪声情况与试验测得结果能够很好的吻合，重现了问题频段的频谱特征，证明了混合TPA方法的准确性。
분석료혼합TPA적계산방법，즉장전통TPA방법，여유한원모형방진계산소득전체함수상결합，이체도감소계산공작량、축단실험주기。논문침대모차형전동계통뉴진인기적차내굉명문제，탑건혼합전체로경분석모형，재준학식별부차가여차신우결합처재하력적기출상，학인공헌량교대적전체로경，병장각전체로경대목표점적성압공헌량진행시량첩가，의합출차내목표점성압보도。분석득도적목표점조성정황여시험측득결과능구흔호적문합，중현료문제빈단적빈보특정，증명료혼합TPA방법적준학성。
The method for hybrid transfer path analysis (TPA) was introduced. This method combined the traditional TPA method with the transfer functions from the finite element modeling so as to reduce the computer-time consuming and save the cost of the testing. Aiming at the interior booming problem induced by torsional vibration of vehicle’s drive sys-tems, the hybrid TPA model was established for analyzing the transmission path of vibration. On the basis of accurately rec-ognizing the load force at the joint between the auxiliary frame and the vehicle’s body, the transfer paths which have large contribution to the vibration transmission were confirmed. The vector superposition for sound pressure contribution from each transfer path to the target points was done. And the sound pressure spectrum diagrams at the target points inside the ve-hicle were obtained by curve’s fitting. The sound pressure spectrum diagrams from this method can agree well with the re-sults directly measured in the test. And the accuracy of this method was verified.