Numerical simulation of elastic buckling in 3D concrete printing using the lattice model with geometric nonlinearity

This paper explores buildability quantification of randomly meshed 3D printed concrete objects by considering structural failure elastic buckling. The newly proposed model considers the most relevant printing parameters, including time-dependent material behaviors, velocity, localized damage and influence sequential process. computational uniaxial compression tests were first conducted to calibrate age-dependent modulus yield stress. Subsequently, analyses process a free wall structure square layout performed. can reproduce asymmetry buckling accurately predicted critical height is in excellent agreement with experimental data from literature. It be concluded combined effect variability non-uniform gravitational loading due resulted during printing. Using this model, parameters optimized suitable scheme devised improve buildability.