Effects of bodyweight, height, and ribcage area moment of inertia on blunt chest impact response

Kimpara, Hideyuki<sup>1</sup>; Iwamoto, Masami<sup>1</sup>; Watanabe, Isao<sup>1</sup>; Miki, Kazuo<sup>1</sup>; Lee, Jong B.<sup>2</sup>; Yang, King H.<sup>2</sup>; King, Albert I.<sup>2</sup>

Affiliations

²Bioengineering Center, Wayne State University

Abstract and keywords

The purpose of this study was to determine the effects of bodyweight, height and ribcage area moment of inertia on human chest impact responses in frontal pendulum impacts. A series of parametric studies was conducted using a commercially available three-dimensional (3D) finite element (FE) model of the whole human body, Total HUman Model for Safety (THUMS). It was found that the maximum chest compression ratio, the best predictor of the number of rib fractures, was correlated with the area moment of inertia of the ribcage.

Keywords: Biomechanics; Thorax; Finite element method; Frontal impacts; Area moment of inertia

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2009	Vezin P, Berthet F. Structural characterization of human rib cage behavior under dynamic loading. Stapp Car Crash J. 2009;53:93-125. SAE 2009-22-0004.
2011	Holcombe S, Kohoyda-Inglis C, Wang L, Goulet JA, Wang SC, Kent RW. Patterns of acetabular femoral head coverage. Stapp Car Crash J. 2011;55:479-490.
2009	Forman J. The Structural Characteristics of the Costal Cartilage: The Roles of Calcification and the Perichondrium, and the Representation of the Costal Cartilage in Finite Element Models of the Human Body [PhD thesis]. Charlottesville, VA: University of Virginia; August 2009.