Virtual Assessment of Occupied Seat Vibration Transmissibility

Amann, Christian; Huschenbeth, André; Zenk, Raphael; Montmayeur, Nicole; Marca, Christian; Michel, Carole

doi:10.4271/2008-01-1861

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…It is noteworthy that this kind of vibration damping performance at the air ride seat is quite distinctive in comparison with the one at the sedan seat. (Amann, 2008) Figure 9. Harmonic excitation of air ride seat system with 75kg buttock shape weight…”

Section: Seat Foam Modelingmentioning

confidence: 99%

Riding Comfort Simulation with air ride seat for heavy duty vehicle

Choi

Lee

Park

et al. 2019

Linköping Electronic Conference Proceedings

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The design of driver's seat suspension of the commercial truck differs from the one of the passenger car. The vibration and the structural characteristics of the suspension are consequently quite different. Unlike passenger cars, the vibration frequency of commercial truck suspensions is considerably low at 1 to 3 Hz. (Mayton, 2006). The truck seat has an air ride seat. The structural design of air ride seat at heavy-duty vehicle includes serial and parallel combinations of the shock absorber, air spring, and PU foam pad to achieve a good vibration damping. The 1D lumped network solution is an effective design tool with the multi-physical subcomponents. And this also enables a direct coupling into the system modeling of the vehicle body for an optimal calibration of engineering parameters taking the relevant dynamic performance of neighboring parts into account. The mechanical characteristics of each component and their assembly were identified for the 1D modeling. The result of validation and verification of the proposing 1D model of the air ride seat is also introduced.

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Section: Seat Foam Modelingmentioning

confidence: 99%

Riding Comfort Simulation with air ride seat for heavy duty vehicle

Choi

Lee

Park

et al. 2019

Linköping Electronic Conference Proceedings

View full text Add to dashboard Cite

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“…At present, a single degree-offreedom (DOF) seat vibration fatigue test bed has a singlevibration form, making it difficult to simulate complex vibration environments [8,9]. Although the multi-DOF vibration test bed can simulate a complex vibration environment, researches on the multiaxis vibration test bed mostly focus on the vibration control algorithm [10][11][12][13][14][15][16][17]. Considerable researches on road excitation information acquisition have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Vibration Information Acquisition and Representation Control Strategy for Construction Vehicle Driver Seat

Gong

Zhao²,

Wang

2019

Shock and Vibration

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Vibration information acquisition and representation control strategy in the experiment of construction of vehicle driver seat are investigated in this study. An improved adaptive algorithm of multisensor attitude data fusion is proposed. The nonlinear equations of vehicle attitude quaternions are constructed by using the test information of accelerometers and magnetometers. Then, a complementary filter is used to fuse the obtained attitude with gyroscope information to obtain attitude information during vehicle travel. Weight matrix and filter coefficients in the algorithm are adjusted with vehicle motions to ensure accuracy of attitude measurement under static, low-, and high-acceleration conditions. The vehicle vibration displacement information is reconstructed by the low-frequency attenuation integration method on the basis of attitude measurement to inhibit integral trend items and reduce vibration displacement reconstruction errors. The three-state controller is designed to control a six-degree-of-freedom hydraulic simulated vibration test bed, and the obtained vibration signal is used as an excitation signal to perform a vibration representation control test. Finally, results verify that the proposed method demonstrates favourable data fusion and representation accuracy.

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A Comprehensive Literature Review of the Pelvis and the Lower Extremity FE Human Models under Quasi-static Conditions

Al-Dirini

Thewlis

Paul

2012

Work

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Finite Element Modeling (FEM) has become a vital tool in the automotive design and development processes. FEM of the human body is a technique capable of estimating parameters that are difficult to measure in experimental studies with the human body segments being modeled as complex and dynamic entities. Several studies have been dedicated to attain close-to-real FEMs of the human body (Pankoke and Siefert 2007; Amann, Huschenbeth et al. 2009; ESI 2010). The aim of this paper is to identify and appraise the state-of-the art models of the human body which incorporate detailed pelvis and/or lower extremity models. Six databases and search engines were used to obtain literature, and the search was limited to studies published in English since 2000. The initial search results identified 636 pelvis-related papers, 834 buttocks-related papers, 505 thigh-related papers, 927 femur-related papers, 2039 knee-related papers, 655 shank-related papers, 292 tibia-related papers, 110 fibula-related papers, 644 ankle-related papers, and 5660 foot-related papers. A refined search returned 100 pelvis-related papers, 45 buttocks-related papers, 65 thigh-related papers, 162 femur-related papers, 195 kneerelated papers, 37 shank-related papers, 80 tibia-related papers, 30 fibula-related papers and 102 ankle-related papers and 246 foot-related papers. The refined literature list was further restricted by appraisal against a modified LOW appraisal criteria. Studies with unclear methodologies, with a focus on populations with pathology or with sport related dynamic motion modeling were excluded. The final literature list included fifteen models and each was assessed against the percentile the model represents, the gender the model was based on, the human body segment/segments included in the model, the sample size used to develop the model, the source of geometric/anthropometric values used to develop the model, the posture the model represents and the finite element solver used for the model. The results of this literature review provide indication of bias in the available models towards 50th percentile male modeling with a notable concentration on the pelvis, femur and buttocks segments.

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Virtual Assessment of Occupied Seat Vibration Transmissibility

Cited by 3 publications

References 3 publications

Riding Comfort Simulation with air ride seat for heavy duty vehicle

Riding Comfort Simulation with air ride seat for heavy duty vehicle

Vibration Information Acquisition and Representation Control Strategy for Construction Vehicle Driver Seat

A Comprehensive Literature Review of the Pelvis and the Lower Extremity FE Human Models under Quasi-static Conditions

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