A NUMERICAL STUDY ON CORRELATION OF RIB FRACTURES WITH THORACIC INJURY CRITERIA IN OBLIQUE IMPACT
Artikel i vetenskaplig tidskrift, 2017

Thoracic injury is one of the vital issues in vehicle side crashes. Experiments have been done widely to study thoracic injuries using biological subjects but less virtual tests were made by using Finite Element (FE) models. This study aimed at determining the correlation of the computationally calculated thoracic injury (Number of Rib Fractures NRF) with existing thoracic injury criteria under pure side and oblique impacts. For this purpose, a previously developed thorax FE model was validated by using Post Mortem Human Subject (PMHS) tests in pure side and oblique impacts in this study. The rib fractures were reconstructed and compared with the fractures observed in the PMHS tests. The model was then used to simulate rib fractures in human thorax impactor tests at Principal Direction of Force (PDOF) angles of 90 degrees to 35 degrees (total of 12 impacts). Furthermore, the normalized NRF were calculated and analyzed for comparing with normalized simulated injury parameters based on various human thoracic injury criteria, including contact force criterion, thorax deflection criterion, compression criterion, upper spine acceleration criterion and Thoracic Trauma Index (TTI). It is suggested that the TTI criterion has better correlation with the NRF than the other injury criteria.

side impact

Human thorax

oblique impact

injury criterion

rib fracture

finite element model

Författare

Fang Wang

Xiamen University of Technology

Fujian Collaborat Innovat Ctr R&D Coach & Special

Bingyu Wang

Medizinische Hochschule Hannover (MHH)

Xiamen University of Technology

Yong Han

Xiamen University of Technology

Xiaoqun Huang

Xiamen University of Technology

Jikuang Yang

Tillämpad mekanik, Fordonssäkerhet, Personskadeprevention

Journal of Mechanics in Medicine and Biology

0219-5194 (ISSN)

Vol. 17 1750113

Ämneskategorier

Teknisk mekanik

Annan medicinteknik

Farkostteknik

DOI

10.1142/S0219519417501135