We were delighted to have Matthew Davis from Elemance LLC present at the 2022 SIMULIA Great Lakes Regional User Meeting, June 8, 2022.
Abstract: The Global Human Body Models Consortium (GHBMC) previously developed a family of detailed finite element {FE} human body models (HBMs) for prediction of injuries caused by blunt impacts. These models were developed specifically for motor vehicle crash applications, but have since been applied to a wide array of applications. Until recently, these HBMs were not available for the Abaqus FE solver. The objective of this effort was to convert the head and neck regions of the GHBMC 50th percentile male {M50} from LS-DYNA to Abaqus Explicit. After using automated Abaqus conversion tools, 9 of 13 material models were manually recalibrated. The Abaqus head and neck HBM material models included: elastic-plastic for bones, viscoelastic, hyperfoam, and hyper-viscoelastic for soft tissues, fabrics for cross-linked fibers, and axial connectors to model strain-rate dependent ligaments. Each converted material model was validated in isolated tension or compression. Subsequently, 9 direct impacts to the face with varying impactor mass, velocity and shape and three validation cases for the neck were performed. All 12 validation cases fell within the range of experimental data and had qualitatively similar responses to the LS-DYNA Model. A pilot study was performed to morph the M50 HBM to subject-specific HBMs with the goal of allowing engineers to design medical and consumer devices using digital twin models. A fully automated pipeline was developed and tested by morphing the head and neck model to the anatomy of a 53 year-old male with body mass index of 35.5.
Biography: Matt is the VP of Technology and Development for Elemance, LLC and has worked in the fields of injury biomechanics and non-linear finite element analysis for 12 years. His primary focus is on the development and application of computational human body models to provide truly human centered design tools for engineers. Matt’s interests span multiple verticals having worked on programs in the arenas of motorsports, automotive safety, aerospace, military, and sports. He received his Ph.D. from the joint program of Virginia Tech – Wake Forest University.
RUM2022 RUM2022-GreatLakes Abaqus Life Sciences
