Human Modeling and CAE Based Subjective Seat Comfort Score Correlation

Laurent, Vincent; Then, Christophe; Silber, Gerhard

doi:10.4271/2014-01-1980

“…Understanding the extreme case for soft tissue deformation (i.e. when tissue deform the most while still in a comfortable sitting posture) may expand our understanding of how soft tissues deform, which is believed to be an important factor for discomfort (Grujicic et al, 2009;Laurent et al, 2014;Siefert et al, 2008) and injury (Linder-Ganz et al, 2006Makhsous et al, 2007). Nonetheless, further work is still needed to fully characterize the 3D patterns of tissue deformation for larger samples with male and female subjects while sitting on rigid and cushioned seats.…”

Section: Discussionmentioning

confidence: 97%

Deformation of the gluteal soft tissues during sitting

Al-Dirini

¹

,

Reed

²

,

Thewlis

³

2015

Clinical Biomechanics

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“…Additionally, a control algorithm for the optimal settings was developed to reduce the complexity of finding the appropriate settings manually. These and other similar seat comfort models accompanied with human tissue models such as in [16] and [17] have been used to generate computer simulations of the expected discomfort level of seat designs. These models eliminate the need of subject testing thus, accelerating the development of seat designs.…”

Section: What Is Comfort? -Current State Of Seat Comfort Researchmentioning

confidence: 99%

“…Most human tissue (such as fat, muscle and skin) and some polymer foam (often used in the seat cushions, i.e. polyurethane) can be model as hyperelastic material, while bone tissue and high density urethane foam can be modeled as elastic material [16]. Thus, it is important to calibrate the piezoresistive sensors accordingly to accurately measure the contact pressure distribution between the human body and the seat's foam cushion.…”

Section: Elastic and Hyperelastic Calibration Of Piezoelectric Sensor Measurementsmentioning

confidence: 99%

Pressure sensing and control of an aircraft passenger seat

Campos¹

2021

Preprint

0

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The premise of this work is to address aircraft seat comfort. This thesis presents the development of an automatic morphing backrest used to reduce pressure experienced by the passenger from the seat. Uncomfortable, high surface pressure zones on the backrest can be alleviated by decentralizing the occupant’s weight. The improved pressure distribution is intended to decrease discomfort during flight while taking different comfort/discomfort models into consideration. Pressure distribution data from the embedded sensor mat is used to compute the seat’s cushion deflection and corresponding backrest contour caused by the passenger’s weight. The surfaces of interest - the passenger’s back and the seat, are modelled and discretized. The discretized surface contact pressure is integrated into the hyperelastic contact model to determine the loading profile. From this, the current pressure distribution and the cushion’s surface change are computed and used in the control system to create the corresponding actuation of the surface.

show abstract

“…Additionally, a control algorithm for the optimal settings was developed to reduce the complexity of finding the appropriate settings manually. These and other similar seat comfort models accompanied with human tissue models such as in [16] and [17] have been used to generate computer simulations of the expected discomfort level of seat designs. These models eliminate the need of subject testing thus, accelerating the development of seat designs.…”

Section: What Is Comfort? -Current State Of Seat Comfort Researchmentioning

confidence: 99%

“…Most human tissue (such as fat, muscle and skin) and some polymer foam (often used in the seat cushions, i.e. polyurethane) can be model as hyperelastic material, while bone tissue and high density urethane foam can be modeled as elastic material [16]. Thus, it is important to calibrate the piezoresistive sensors accordingly to accurately measure the contact pressure distribution between the human body and the seat's foam cushion.…”

Section: Elastic and Hyperelastic Calibration Of Piezoelectric Sensor Measurementsmentioning

confidence: 99%

Pressure sensing and control of an aircraft passenger seat

Campos¹

2021

Preprint

2

0

View full text Add to dashboard Cite

The premise of this work is to address aircraft seat comfort. This thesis presents the development of an automatic morphing backrest used to reduce pressure experienced by the passenger from the seat. Uncomfortable, high surface pressure zones on the backrest can be alleviated by decentralizing the occupant’s weight. The improved pressure distribution is intended to decrease discomfort during flight while taking different comfort/discomfort models into consideration. Pressure distribution data from the embedded sensor mat is used to compute the seat’s cushion deflection and corresponding backrest contour caused by the passenger’s weight. The surfaces of interest - the passenger’s back and the seat, are modelled and discretized. The discretized surface contact pressure is integrated into the hyperelastic contact model to determine the loading profile. From this, the current pressure distribution and the cushion’s surface change are computed and used in the control system to create the corresponding actuation of the surface.

show abstract

Human Modeling and CAE Based Subjective Seat Comfort Score Correlation

Cited by 13 publications

References 5 publications

Deformation of the gluteal soft tissues during sitting

Deformation of the gluteal soft tissues during sitting

Pressure sensing and control of an aircraft passenger seat

Pressure sensing and control of an aircraft passenger seat

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