A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Energy absorption of additively manufactured functionally bi-graded thickness honeycombs subjected to axial loads
https://orcid.org/0000-0003-0119-6108
Abstract A novel bi-graded honeycomb was proposed by introducing both in-plane and out-of-plane thickness gradients into a regular honeycomb. The graded honeycombs were additively manufactured by fused deposition modeling (FDM) with polylactic acid (PLA) and then tested for axial crushing. Numerical simulation models were constructed through LS-DYNA and validated using experiment results. Based on the super folding element (SFE) method, theoretical models of the proposed bi-graded honeycombs were derived and the accuracy for crushing response was validated against the numerical results. Finally, an active learning based multi-objective optimization algorithm was used to seek the optimal design. The results showed that the bi-graded design for honeycomb structures could improve energy absorption capacity and decrease the peak crushing force in the Pareto frontier manner. The specific energy absorption of the optimal bi-graded honeycomb could be 45.6% higher than that of the regular honeycomb while the peak crushing force was controlled at the same level.
Highlights A bi-graded honeycomb was proposed by introducing two direction thickness gradients. Test specimens were additively manufactured and tested for quasi-static crushing. Theoretical models of the proposed bi-graded honeycomb were built. Optimal design was derived by an active learning based multi-objective optimization.
Energy absorption of additively manufactured functionally bi-graded thickness honeycombs subjected to axial loads
https://orcid.org/0000-0003-0119-6108
Abstract A novel bi-graded honeycomb was proposed by introducing both in-plane and out-of-plane thickness gradients into a regular honeycomb. The graded honeycombs were additively manufactured by fused deposition modeling (FDM) with polylactic acid (PLA) and then tested for axial crushing. Numerical simulation models were constructed through LS-DYNA and validated using experiment results. Based on the super folding element (SFE) method, theoretical models of the proposed bi-graded honeycombs were derived and the accuracy for crushing response was validated against the numerical results. Finally, an active learning based multi-objective optimization algorithm was used to seek the optimal design. The results showed that the bi-graded design for honeycomb structures could improve energy absorption capacity and decrease the peak crushing force in the Pareto frontier manner. The specific energy absorption of the optimal bi-graded honeycomb could be 45.6% higher than that of the regular honeycomb while the peak crushing force was controlled at the same level.
Highlights A bi-graded honeycomb was proposed by introducing two direction thickness gradients. Test specimens were additively manufactured and tested for quasi-static crushing. Theoretical models of the proposed bi-graded honeycomb were built. Optimal design was derived by an active learning based multi-objective optimization.
Energy absorption of additively manufactured functionally bi-graded thickness honeycombs subjected to axial loads
https://orcid.org/0000-0003-0119-6108
Abstract A novel bi-graded honeycomb was proposed by introducing both in-plane and out-of-plane thickness gradients into a regular honeycomb. The graded honeycombs were additively manufactured by fused deposition modeling (FDM) with polylactic acid (PLA) and then tested for axial crushing. Numerical simulation models were constructed through LS-DYNA and validated using experiment results. Based on the super folding element (SFE) method, theoretical models of the proposed bi-graded honeycombs were derived and the accuracy for crushing response was validated against the numerical results. Finally, an active learning based multi-objective optimization algorithm was used to seek the optimal design. The results showed that the bi-graded design for honeycomb structures could improve energy absorption capacity and decrease the peak crushing force in the Pareto frontier manner. The specific energy absorption of the optimal bi-graded honeycomb could be 45.6% higher than that of the regular honeycomb while the peak crushing force was controlled at the same level.
Highlights A bi-graded honeycomb was proposed by introducing two direction thickness gradients. Test specimens were additively manufactured and tested for quasi-static crushing. Theoretical models of the proposed bi-graded honeycomb were built. Optimal design was derived by an active learning based multi-objective optimization.
Energy absorption of additively manufactured functionally bi-graded thickness honeycombs subjected to axial loads
Wu, Yaozhong (author) / Sun, Longfei (author) / Yang, Ping (author) / Fang, Jianguang (author) / Li, Weijia (author)
Thin-Walled Structures ; 164
2021-04-06
Article (Journal)
Electronic Resource
English
Mechanical properties of additively manufactured octagonal honeycombs
| British Library Online Contents | 2016
Mechanical properties of additively manufactured octagonal honeycombs
| British Library Online Contents | 2016
Mechanical properties of additively manufactured octagonal honeycombs
| British Library Online Contents | 2016
Mechanical properties of additively manufactured octagonal honeycombs
| British Library Online Contents | 2016