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Forming prediction of TA2 pedicle screw system connection rod in lumbar interbody fusion: a CPFEM-based multiscale
Yijie Cai1,2, Xiao Yang1,2, Haiyang Wu3
1School of Mechanical Engineering, Hubei University of Technology, Wuhan, China.
Computer Methods in Biomechanics and Biomedical Engineering
|April 29, 2026
Abstract:
The precision forming of pedicle screw connection rods is vital for spinal fusion safety. This study investigates the anisotropic forming behavior of TA2 titanium to enhance forming accuracy. A multiscale model integrating EBSD-based 3D-RVE and CPFEM was developed and embedded into ABAQUS to simulate springback. Results confirm that this approach significantly improves prediction accuracy. This work provides a scalable strategy for precise medical implant manufacturing.
Keywords:
Anisotropyconnection rodcrystal plasticity finite element method (CPFEM)multiscale modelingpedicle screw systemspringback
