PIPER adult comfort: an open-source full body human body model for seating comfort assessment and its validation under static loading conditions

Frontiers in Bioengineering and Biotechnology

Bioengineering and Biotechnology

Li Ding¹  Shenghui Liu²  Philippe Beillas³  Xuguang Wang³ 

[1] Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China;Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China;Université de Lyon, Université Claude Bernard Lyon 1, Université Gustave Eiffel, LBMC UMR_T 9406, Lyon, France;Université de Lyon, Université Claude Bernard Lyon 1, Université Gustave Eiffel, LBMC UMR_T 9406, Lyon, France;

关键词: human body model;    finite elements;    seating comfort/discomfort;    validation;    pressure/force distribution;    open source;   

DOI  :  10.3389/fbioe.2023.1170768

 received in 2023-02-21, accepted in 2023-05-05,  发布年份 2023

来源: Frontiers

【 摘 要 】

Introduction: In this paper we introduce an adult-sized FE full-body HBM for seating comfort assessments and present its validation in different static seating conditions in terms of pressure distribution and contact forces.Methods: We morphed the PIPER Child model into a male adult-sized model with the help of different target sources including his body surface scans, and spinal and pelvic bone surfaces and an open sourced full body skeleton. We also introduced soft tissue sliding under the ischial tuberosities (ITs). The initial model was adapted for seating applications with low modulus soft tissue material property and mesh refinements for buttock regions, etc. We compared the contact forces and pressure-related parameters simulated using the adult HBM with those obtained experimentally from the person whose data was used for the model development. Four seat configurations, with the seat pan angle varying from 0° to 15° and seat-to-back angle fixed at 100°, were tested.Results: The adult HBM could correctly simulate the contact forces on the backrest, seat pan, and foot support with an average error of less than 22.3 N and 15.5 N in the horizontal and vertical directions, which is small considering the body weight (785 N). In terms of contact area, peak, and mean pressure, the simulation matched well with the experiment for the seat pan. With soft tissue sliding, higher soft tissue compression was obtained in agreement with the observations from recent MRI studies.Discussion: The present adult model could be used as a reference using a morphing tool as proposed in PIPER. The model will be published openly online as part of the PIPER open-source project (www.PIPER-project.org) to facilitate its reuse and improvement as well as its specific adaptation for different applications.

【 授权许可】

Unknown   
Copyright © 2023 Liu, Beillas, Ding and Wang.