TY - GEN
T1 - Numerical Simulation of 3D Printing of Infrastructure Materials
AU - Ramyar, E.
AU - Xinwei, Z.
AU - Cusatis, G.
N1 - Publisher Copyright:
© 2021 ASCE.
PY - 2021
Y1 - 2021
N2 - 3D printing is poised to become a disruptive force for the terrestrial construction industry, and it is also the most likely technology that will make possible the safe and reliable development of extraterrestrial infrastructure. While more and more researchers are working on developing novel and appropriate mixes, as well as 3D printing technologies, only a few and somewhat limited computational models are available in the literature for the design and analysis of 3D printed structures. Nevertheless, engineers need simulation tools for the design and optimization of any structure, including 3D printed. The main objective of this paper is to highlight the formulation of the discrete fresh concrete model (DFCM). DFCM is a particle-based fresh cementitious material model that simulates the rheological and mechanical behavior of material accurately before, during, and after printing to optimize the printing process and the material flow. For DFCM, the interaction among spherical particles is governed by visco-plastic constitutive equations, which, unlike conventional particle models that use force-displacement relationships, are based on stress-strain relationships. This allows a mathematical formulation enabling a seamless transition from the description of fresh concrete to the one of hardened concrete.
AB - 3D printing is poised to become a disruptive force for the terrestrial construction industry, and it is also the most likely technology that will make possible the safe and reliable development of extraterrestrial infrastructure. While more and more researchers are working on developing novel and appropriate mixes, as well as 3D printing technologies, only a few and somewhat limited computational models are available in the literature for the design and analysis of 3D printed structures. Nevertheless, engineers need simulation tools for the design and optimization of any structure, including 3D printed. The main objective of this paper is to highlight the formulation of the discrete fresh concrete model (DFCM). DFCM is a particle-based fresh cementitious material model that simulates the rheological and mechanical behavior of material accurately before, during, and after printing to optimize the printing process and the material flow. For DFCM, the interaction among spherical particles is governed by visco-plastic constitutive equations, which, unlike conventional particle models that use force-displacement relationships, are based on stress-strain relationships. This allows a mathematical formulation enabling a seamless transition from the description of fresh concrete to the one of hardened concrete.
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U2 - 10.1061/9780784483374.115
DO - 10.1061/9780784483374.115
M3 - Conference contribution
AN - SCOPUS:85104871523
T3 - Earth and Space 2021: Space Exploration, Utilization, Engineering, and Construction in Extreme Environments - Selected Papers from the 17th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments
SP - 1242
EP - 1250
BT - Earth and Space 2021
A2 - van Susante, Paul J.
A2 - Roberts, Alaina Dickason
PB - American Society of Civil Engineers (ASCE)
T2 - 17th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments: Space Exploration, Utilization, Engineering, and Construction in Extreme Environments, Earth and Space 2021
Y2 - 19 April 2021 through 23 April 2021
ER -