Digital Twin Modelling of Architected Structures via MPM Zhen Chen College of Engineering, University of Missouri, Columbia, MO 65211, USA Email: chenzh@missouri.edu Website: https://engineering.missouri.edu/faculty/zhen-chen/ ABSTRACT Industry 4.0 – the fourth industrial revolution plays a key role in the fast-changing digital world, which promotes the digital twin technology. By obtaining real-time data, the digital twin understands the current state, predicts the future state and is a basis for optimization. The digital twin technology depends on simulation-based engineering science (SBES), while computational mechanics represents an important pillar for SBES. Particle methods have evolved into an important class of methods in SBES while the material point method (MPM) is a continuum-based particle method that combines the strengths of finite element method and molecular dynamics (MD). With the image-based MPM and MD, an interdisciplinary team effort is being made for developing the digital twin technology for model-based design and evaluation of architected structures against extreme loading conditions (high loading rate, pressure and temperature) [1-3]. In this presentation, recent research results on engineering lattice structures will be presented, using both the MPM and Generalized Interpolation Material Point Method (GIMP) for verification as well as validation against available experimental data. Future research tasks will then be discussed based on the recent findings. REFERENCES [1] Giraldo-Londono, O., Muneton-Lopez, R.A., Barclay, P.L., Zhuang, X., Zhang, D.Z., and Chen, Z., “Toward Engineering Lattice Structures with the Material Point Method (MPM),” to appear in the invited issue on Recent Advances in Meshfree and Particle Methods, Engineering with Computers, 2025. Toward engineering lattice structures with the material point method (MPM) | Engineering with Computers [2] Saffarini, M., Sewell, T., Su, Y., and Chen, Z., “Atomistic Study of the Impact Response of Bicontinuous Nanoporous Gold as a Protection Medium: Effect of Porous-Nonporous Interface on Failure Evolution,” Computational Materials Science, Vol. 228, No. 112363, 2023. [3] Su, Y.C., Saffarini, M.H., Sewell, T., and Chen, Z., “Investigation of the Impact Response of Bi-continuous Nanoporous Solids via the Material Point Method: Verification against the Molecular Dynamics Simulation,” to appear in the invited issue on Meshless and Continuum Particle Metho