Modal analysis of human body vibration model for Indian subjects under sitting posture

Singh, Ishbir; Nigam, S. P.; Saran, V. H.

doi:10.1080/00140139.2014.961567

Cited by 28 publications

(6 citation statements)

References 28 publications

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“…m i ( i = 1–8) is the mass of the segment (head to pelvis). According to Singh et al 35 the weight of the seated passengers accounts for 73.6% (55.5 kg) of the total weight of humans (75.4 kg). The bones and muscles share 40% and 60%, respectively, of total human weight.…”

Section: Evaluation Criteriamentioning

confidence: 99%

Development and analysis of a novel biomechanical model for seated occupants

Guruguntla

Lal

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Seated occupants may experience discomfort or meet with injuries if the vertical vibration frequency lies in the range of 4–20 Hz. To examine the effect of vibration on seated occupants, it is necessary to develop a biomechanical model that can precisely predict the biodynamic responses (seat to head transmissibility, driving point mechanical impedance, and apparent mass) of a real human. In the past, none of the studies segregated the human body mass into bones and muscles mass that have distinct mechanical properties. In this article, the work is carried out in four steps: first, development of a novel 8- dofs biomechanical model by considering both bone and muscle masses; second, development of all the feasible configurations of 8- dofs model followed by identification and optimization of model parameters with firefly algorithm (FA); third, calibration of all the feasible models as per the standards of biodynamics and selection of best four models; and fourth, comparison of biodynamic responses of best four models with experimental responses and past developed models. The goodness of fit of a seat to head transmissibility, driving point mechanical impedance, and apparent mass for the best model is obtained 0.986, 0.976, and 0.956, respectively.

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Section: Evaluation Criteriamentioning

confidence: 99%

Development and analysis of a novel biomechanical model for seated occupants

Guruguntla

Lal

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Chaudharyet al [17] used a tri-axial seat pad accelerometer to measure the whole body vibrations exposure of blast hole drill operator working in an ore mine and by means of frequency weighted RMS acceleration value, along all three axes the evaluation of WBV was done. Singhet al [18] performed a modal analysis of human body in sitting posture for Indian subjects using LPM (Lumped Parameter Model). Singhet al [19] represented experimental results to show the subjective response of human subjects in sitting posture under harmonic vibrations in vertical direction suing different inclination of backrest.…”

Section: Industrial Engineering Journalmentioning

confidence: 99%

“…a, b and c as shown in Fig. 1 and consideration of different mass segments of human subject have been taken from Singh et al [18]. Considering the values of a, b and c; a physical model of Indian male human subjectof mass 54 kg that is shown in Fig.…”

Section: Fig1 An Ellipsoidal Segment [21]mentioning

confidence: 99%

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Modal Frequency Response Analysis of Human Subject Using Fem

Savara¹,

Singh²,

Kalsi³

2018

IEJ

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“…Various models of the human body under WBV exposure have been proposed in the literature. 7,8 Many models are based upon the frequency response functions. The restoring and damping parameters of the human body model are calculated by matching the model dynamic response with one or two of the frequency responses: STHT, DPMI and APMS.…”

Section: Introductionmentioning

confidence: 99%

Biodynamic Model of the Seated Human Body under the Vertical Whole Body Vibration Exposure

Kumar¹,

Saran²

2019

The International Journal of Acoustics and Vibration

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The seat-to-head transmissibility and apparent mass characteristics are measured for the seated human subjects exposed to vertical whole-body vibration in the 0.5-20 Hz frequency range at a vibration magnitude of 1.0 m/s2 rms. The experiments are conducted on test subjects seated in an upright posture. A biodynamic model has been developed for bio-mechanical parameters that are estimated on the basis of identified biodynamic responses. The parameters identification technique employs a genetic algorithm for the solution of the function comprising sum of squared magnitude and phase errors related with target values of seat-to-head transmissibility and apparent mass. The developed model presents the target values of magnitude associated with apparent mass and seat-to-head transmissibility. The natural frequencies of the model have been found at up to 5.0896 Hz. The model also presents the resonant frequencies calculated on the basis of both biodynamic response functions very close to that found for seated human body experimentally.

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Modal analysis of human body vibration model for Indian subjects under sitting posture

Cited by 28 publications

References 28 publications

Development and analysis of a novel biomechanical model for seated occupants

Development and analysis of a novel biomechanical model for seated occupants

Modal Frequency Response Analysis of Human Subject Using Fem

Biodynamic Model of the Seated Human Body under the Vertical Whole Body Vibration Exposure

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