Structural analysis of the intervertebral discs adjacent to an interbody fusion using multibody dynamics and finite element cosimulation

摘要: This work describes a methodology for the dynamic and structural analysis of complex (bio)mechanical systems that joins both multibody dynamics finite element domains, in synergetic way, through cosimulation procedure takes benefit advantages each numerical formulation. To accomplish this goal, module is developed based on gluing algorithm X-X, which key responsible management information flux between two software packages (each using its own mathematical formulation code). The X-X uses cosimulated structure multiple pairs reference points whose kinematics are solved by prescribed, as initial data, to counterpart. module, turn, solves problem imposed prescribed kinematics, calculates resulting generalized loads applied over return these back them solve calculate new prescribe next time step. proposed method study cervical spine pathologic situation an intersomatic fusion simulated confirm potential advantages. Taking into account simulation scenario, model includes rigid vertebrae, facet joints’ spinous processes’ contacts, ligaments models intervertebral discs, their surrogates developed. extension forward perspective.