自動車技術会主催　SETC2022にて発表 | 株式会社エステック

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自動車技術会主催　SETC2022にて発表があります

以下内容で発表があります。

自動車技術会主催
SETC2022

日時	2022年 10月 31日（月）～11月３日（木）
会場	ハイブリッド開催（アクリエひめじ＋オンライン）
セッション名	New Product Technology Session
発表タイトル	Unique Theory of the Operating Engine Simulation to Investigate the Noise/Vibration Mechanism
発表者	宮内　新　　　（エステック）
連名者	小川　祐則　　（エステック）菅野　将俊　　（エステック）行澤　大悟　　（エステック）
講演要旨	When an engine is running, a rotating crankshaft and non-rotating (stationary) engine housing are coupled dynamically. To predict such dynamical phenomenon, CAE simulation with using a time domain kinematic mechanism software is commonly used. However, estimating engine noise and vibration takes long computational time. 　We proposed a unique frequency domain simulation theory which solves an elastic vibration of both a rotating crankshaft and a stationary engine housing simultaneously. Coupling crankshaft and engine housing in frequency domain enables to analyze an operating engine elastic vibration in a short time. 　Our benchmark test found this new analysis method is 100+ times faster than the legacy time domain method. Furthermore, the proposed method has the similar prediction accuracy of the engine vibration and radiation noise compared with the legacy simulation solver. The method is patented with #5352026 in Japan and implemented as a commercial software named 'ESTECH.PS-X'. 　This paper briefly reports followings; (1) a new theory of frequency domain solution with large scale finite element engine model to simulate operating engine vibrations, (2) unique modal base analysis methods to easily clarify a vibration mechanism, and (3) applications and use cases of proposed theory．

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