Stress-Strain State Analysis of a Shallow Spherical Shell Fabricated Using 3DCP

Authors

  • Olena Petrova O.M. Beketov National University of Urban Economy in Kharkiv image/svg+xml
  • Dmytro Petrenko O.M. Beketov National University of Urban Economy in Kharkiv image/svg+xml
  • Vladyslav Tenesesku O.M. Beketov National University of Urban Economy in Kharkiv image/svg+xml
  • Oleksii Buldakov O.M. Beketov National University of Urban Economy in Kharkiv image/svg+xml

DOI:

https://doi.org/10.26906/znp.2025.65.4210

Keywords:

3D-printed shell, experimental study, stress–strain state, 3D concrete printing, load-bearing capacity

Abstract

Experimental and numerical investigations of the stress–strain behavior and load-bearing capacity of a shallow spherical concrete shell fabricated using extrusion-based 3D printing are presented. The shell with a plan dimension of 2.2 × 2.2 m was subjected to quasi-uniform stepwise loading using sandbags. The maximum applied distributed load reached 13.74 kN/m², and the measured vertical deflections did not exceed 0.235 mm, indicating high structural stiffness. A three-dimensional nonlinear finite element model was developed in LS-DYNA to simulate the experimental behavior and to predict the ultimate load-bearing capacity, since it was not reached experimentally. It was found that failure of the 3D-printed shell occurs under a uniformly distributed load of 228.4 kN/m², which corresponds to a total load of 67.8 t. The numerical results showed good agreement with the experimental data, with discrepancies within 17%. The proposed experimental–numerical approach confirms the structural efficiency and feasibility of 3D-printed concrete shells for load-bearing applications.

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Published

2025-12-26

Issue

Vol. 2 No. 65 (2025): ACADEMIC JOURNAL Industrial Machine Building, Civil Engineering

Section

"Construction and civil engineering"

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Copyright (c) 2025 Olena Petrova, Dmytro Petrenko, Vladyslav Tenesesku, Oleksii Buldakov

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