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MATSUMURA, Yuichi; YOSHIKAWA, Shogo; INABA, Masashi; SEMURA, Junichi
Transactions of the JSME (in Japanese), 2021Journal Article
This paper addresses the modular concept concurrent design of NVH (Noise, Vibration and Harshness) performance. Recent development of modularization design in car companies requires the realization of the modularization of NVH design process. However, there are difficulties for the modularization design of the strong coupling vibration among each module. Modularization design requires the realization of concurrent design by two or more groups. In this case, a true concurrent design cannot be realized unless the problem that a slight structural modification seriously changes the characteristics of a whole structure due to the strong coupling is solved. In this paper, a concurrent modularization design method of NVH performance which utilizes the kCA (kernel Compliance Analysis) was proposed to overcome the strong coupling problem. The basic concept of the kCA is adopted for both the placement of resonance frequencies and the reduction of resonance responses of a whole structure, by the comprehension of resonance generation mechanism between coupled two subsystems. Therefore, the kCA was adopted in this paper as a basis of the proposed method to overcome the strong coupling problem. In the paper, it is shown that the proposed method provides the advantage of no rework at every stage of the design, from upstream to downstream, if two groups which design two subsystems separately follow the specifications which is decided by the proposed design method. Finally, the method was verified by a numerical case study.
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