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This study examines the mechanical performance of 3D-printed fiber-reinforced concrete through comprehensive experimental testing, including compression and splitting tests conducted across three principal print orientations. Specimens were oriented to reflect actual printing processes, distinguishing between horizontal print planes and vertical layers relative to nozzle movement. The results reveal significant anisotropic behavior and varying strength properties contingent on print orientation. Specifically, the FX orientation (parallel to the printing direction) demonstrated compressive strengths comparable to traditional cast concrete, while FY (perpendicular) and FZ (vertical) orientations exhibited progressively lower strengths due to weaker interlayer bonding. Building on these findings, a customized constitutive model for 3D-printed fiber concrete was developed and integrated into the OpenSees framework, enabling precise finite element simulations. Furthermore, the integration of 3D-printed fiber concrete with OpenSees Topology Optimization (TO) facilitates automated structural model generation and innovative design processes, leveraging iterative topology optimization and isogeometric analysis to enhance structural performance and material efficiency. This integration represents a significant advancement in structural engineering and computational simulation, offering viable solutions for the future of construction technology and supporting the broader adoption of additive manufacturing in the construction industry.

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Integration of 3D Printed Fiber Concrete and OpenSees TO for Enhanced Structural Design

  • 会议论文

  • 发表日期：

    2025年

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  • Junsong Wang,
  • Haoran Ye,
  • Yating Sun,
  • Zixin Zhang,
  • Chenxu Qi,
  • Chenzhe Zhang,
  • Chengwei Song,
  • Cristoforo Demartino,
  • Asif Usmani

摘要

This study examines the mechanical performance of 3D-printed fiber-reinforced concrete through comprehensive experimental testing, including compression and splitting tests conducted across three principal print orientations. Specimens were oriented to reflect actual printing processes, distinguishing between horizontal print planes and vertical layers relative to nozzle movement. The results reveal significant anisotropic behavior and varying strength properties contingent on print orientation. Specifically, the FX orientation (parallel to the printing direction) demonstrated compressive strengths comparable to traditional cast concrete, while FY (perpendicular) and FZ (vertical) orientations exhibited progressively lower strengths due to weaker interlayer bonding. Building on these findings, a customized constitutive model for 3D-printed fiber concrete was developed and integrated into the OpenSees framework, enabling precise finite element simulations. Furthermore, the integration of 3D-printed fiber concrete with OpenSees Topology Optimization (TO) facilitates automated structural model generation and innovative design processes, leveraging iterative topology optimization and isogeometric analysis to enhance structural performance and material efficiency. This integration represents a significant advancement in structural engineering and computational simulation, offering viable solutions for the future of construction technology and supporting the broader adoption of additive manufacturing in the construction industry.