Comparison of two finite element modeling solutions for biomechanical simulation using a case study of a mandibular bone

[+] Author and Article Information
Yunfeng Liu

Key Laboratory of E&M (Zhejiang University of Technology), Ministry of Education & Zhejiang Province, Hangzhou 310014, China

Ying-ying Fan

Key Laboratory of E&M (Zhejiang University of Technology), Ministry of Education & Zhejiang Province, Hangzhou 310014, China

Hui-yue Dong

Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310007, China

Jian-xing Zhang

Department of Stomatology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China

1Corresponding author.

ASME doi:10.1115/1.4037633 History: Received March 14, 2017; Revised August 10, 2017


Background: The method used in biomechanical modeling for finite element method (FEM) analysis needs to deliver accurate results. There are currently two solutions used in FEM modeling for biomedical model of human bone from CT images: one is based on a triangular mesh, and the other is based on the parametric surface model and is more popular in practice. Materials and methods: The outline and modeling procedures for the two solutions are compared and analyzed. Using a mandibular bone as an example, several key modeling steps are then discussed in detail, and the FEM calculation was conducted. Results: Numerical calculation results based on the models derived from the two methods, including stress, strain, and displacement, are compared and evaluated in relation to accuracy and validity. Moreover, a comprehensive comparison of the two solutions is listed. Conclusions: The parametric surface based method is more helpful when using powerful design tools in CAD software, but the triangular mesh based method is more robust and efficient.

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