scholarly journals A hybrid finite element – statistical energy analysis approach to robust sound transmission modeling

2014 ◽  
Vol 333 (19) ◽  
pp. 4621-4636 ◽  
Author(s):  
Edwin Reynders ◽  
Robin S. Langley ◽  
Arne Dijckmans ◽  
Gerrit Vermeir
Keyword(s):  
Finite Element ◽  
Energy Analysis ◽  
Sound Transmission ◽  
Analysis Approach ◽  
Statistical Energy Analysis ◽  
Hybrid Finite Element ◽  
Transmission Modeling

scholarly journals Review of Hybrid Finite Element – Statistical Energy Analysis methods in vehicle NVH predictions

2019 ◽  
Vol 12 (4) ◽  
pp. 347-370
Author(s):  
Marcell Ferenc Treszkai ◽  
Dániel Feszty
Keyword(s):  
Finite Element ◽  
Noise Level ◽  
Energy Analysis ◽  
State Of The Art ◽  
Interior Noise ◽  
Statistical Energy Analysis ◽  
Frequency Range ◽  
Hybrid Finite Element ◽  
Statistical Approaches ◽  
Noise Vibration

In the vehicle industry, the noise, vibration and harshness (NVH) characteristics of a car are becoming more and more important. In order to control these, it is necessary to know the sources and contributors to the interior noise level. This paper provide an overview of the state-of-the-art on predicting the NVH characteristics of fully trimmed vehicles in the mid-frequency gap between 400 Hz to 1 kHz. It is shown that for this frequency range, typically a hybrid FE-SEA method is used. This method provides a mixture of the advantages of the deterministic and statistical approaches. The first part of the paper introduces the method, followed by an overview of the different fields of usage in the vehicle industry. At the end of the paper, gaps in the knowledge are identified.

A similitude for the middle-frequency vibration response of satellite solar array based on the wave coupling hybrid finite element–statistical energy analysis method

2020 ◽  
Vol 234 (18) ◽  
pp. 3560-3570 ◽  
Author(s):  
Fengxia He ◽  
Zhong Luo ◽  
Lei Li ◽  
Yongqiang Zhang
Keyword(s):  
Finite Element ◽  
Scaling Laws ◽  
Energy Analysis ◽  
Vibration Response ◽  
Solar Array ◽  
Complex Structures ◽  
Statistical Energy Analysis ◽  
Analysis Method ◽  
Wave Coupling ◽  
Hybrid Finite Element

A similitude is proposed for the dynamic response analysis of a satellite solar array. It is defined by invoking the wave coupling hybrid finite element–statistical energy analysis method which is considered as an effective way to solve the wide frequency (especially middle-frequency) vibration response of complex structures. The scaling laws are then derived by looking for equalities in the structural responses. A numerical case involving an assembly of two plates is discussed to verify the proposed scaling laws. Moreover, the new similitude is applied to a simplified satellite solar array model. If the analysis frequency step is selected appropriately, it is shown that a complete similitude can be defined: it allows predicting the vibration response of satellite solar array and provides the possibility for the model test of complex structures.

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