Human shoulder response to side impacts: a finite element study

Area of Science:

• Biomechanics
• Computational modeling
• Injury prevention

Background:

• Existing human body models lack detailed shoulder dynamics for side impact analysis.
• Accurate simulation of shoulder response is crucial for understanding injury mechanisms in vehicle collisions.

Purpose of the Study:

• To develop and validate a sophisticated shoulder finite element (FE) model.
• To simulate the dynamic response of the shoulder during lateral impacts.
• To establish a foundation for predicting shoulder injuries in simulated car crashes.

Main Methods:

• Updated the existing Human Model for Safety (HUMOS) FE model.
• Incorporated detailed anatomical and material properties for the shoulder complex.
• Validated the model by comparing simulation results with experimental data from lateral impact tests.

Main Results:

• The developed shoulder FE model accurately simulates dynamic behavior under lateral impact.
• Model predictions for impact force and shoulder deflections closely matched experimental findings.
• Good agreement was observed across various impact speeds and directions.

Conclusions:

• The validated shoulder FE model is a promising tool for biomechanical research.
• The model can reliably predict shoulder responses in simulated side impact scenarios.
• This advancement supports the development of improved vehicle safety systems and injury mitigation strategies.