期刊
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE
卷 9, 期 1, 页码 46-58出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15459624.2011.635130
关键词
digital headform; FE method; fit and comfort; respirator; stress and strain
资金
- National Institute for Occupational Safety and Health (NIOSH) [254-2009-M-31878]
This article presents a computational and experimental study of contact pressure between six N95 filtering facepiece respirators (FFRs) and five newly developed digital headforms (small, medium, large, long/narrow and short/wide). Contact interaction is simulated using the finite element method and validated by experiments using a pressure mapping system. The headform model has multiple layers: a skin layer, muscle layer fatty tissue layer and bone layer Each headform is divided into five parts (two parts for the cheeks, one part for the upper forehead, one part for the chin, and one part for the back side of the head). Each respirator model comprises multiple layers and two straps. The simulation process has two stages for each respirator/headform combination. The first stage is to wrap the straps around the back of the headform and pull the respirator away from the face. The second stage is to release the respirator so that the respirator moves toward the face. Strap forces and contact interactions are generated between the respirators and the headforms. Meanwhile, a real-time surface pressure mapping system is used to record the pressures at six key locations to validate the computational results. There is a strong correlation between computational and experimental results (R-2 = 0.88). By comparing the pressure values from simulations and experiments, we have validated the simulation models.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据