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Simulating the interaction between a respirator and a headform using LS-DYNA.

Authors

Yang-J; Dai-J; Zhuang-Z

Source

Comput Aided Des Appl 2009 Jul-Aug; 6(4):539-551

Link

http://dx.doi.org/10.3722/cadaps.2009.539-551 

NIOSHTIC No.

20037859 

Abstract

Respirator use is an integral part of occupational safety and health practice. The challenge is to design respirators with the best fit and highest comfort level for all workers of diverse anthropometry. This paper presents a method to simulate the interaction between a respirator and a headform, and solutions for the universal design of respirators. Three-dimensional digital headforms and respirators are obtained using reverse engineering techniques. The commercial software, LS-DYNA, is used to model and simulate the interaction between a respirator and headform to determine the key factors that affect respirator fit and comfort. Both the respirator and headform are modeled as shell elements and are deformable. The results show that strap forces play an important role in pressure distribution on the face.

Keywords

Respirators; Respiratory-equipment; Respiratory-protection; Respiratory-protective-equipment; Computer-aided-manufacturing; Computer-models; Anthropometry; Headgear; Equipment-design; Engineering; Computer-software; Face-masks; Force; Testing-equipment; Author Keywords: respirator fit; headform; finite element analysis; stress and deformation

Publication Date

20090701

Document Type

Journal Article

Email Address

james.yang@ttu.edu

Fiscal Year

2009

NTIS Accession No.

NTIS Price

Issue of Publication

4

ISSN

1686-4360

NIOSH Division

NPPTL

Source Name

Computer-Aided Design and Applications

State

TX; PA