Simulated effects of head movement on contact pressures between headforms and n95 filtering facepiece respirators-Part 1: Headform model and validation

Zhipeng Lei, Xuewu Ji, Ning Li, James Yang, Ziqing Zhuang, Dana Rottach

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

In a respirator fit test, a subject is required to perform a series of exercises that include moving the head up and down and rotating the head left and right. These head movements could affect respirator sealing properties during the fit test and consequently affect fit factors. In a model-based system, it is desirable to have similar capability to predict newly designed respirators. In our previous work, finite element modeling (FEM)-based contact simulation between a headform and a filtering facepiece respirator was carried out. However, the headform was assumed to be static or fixed. This paper presents the first part of a series study on the effect of headform movement on contact pressures - a new headform with the capability to move down (flexion), up (extension), and rotate left and right-and validation. The newly developed headforms were validated for movement by comparing the simulated cervical vertebrae rotation angles with experimental results from the literature.

Original languageEnglish
Pages (from-to)1175-1185
Number of pages11
JournalAnnals of Occupational Hygiene
Volume58
Issue number9
DOIs
StatePublished - Apr 14 2014

Keywords

  • Contact pressure
  • filtering facepiece respirator
  • finite element method
  • head movement
  • headform

Fingerprint Dive into the research topics of 'Simulated effects of head movement on contact pressures between headforms and n95 filtering facepiece respirators-Part 1: Headform model and validation'. Together they form a unique fingerprint.

  • Cite this