The Role of Unit-Cell Topology in Modulating the Compaction Response of Additively Manufactured Cellular Materials using Simulations and Validation Experiments
Journal Article
·
· Modelling and Simulation in Materials Science and Engineering
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Los Alamos NatiLos Alamos National Laboratory (LANL), Los Alamos, NM (United States)onal Laboratory
Additive manufacturing has enabled a transformational ability to create cellular structures (or foams) with tailored topology. Compared to their monolithic polymer counterparts, cellular structures are potentially suitable for systems requiring materials with high specific energy-absorbing capability to provide enhanced damping. In this work, we demonstrate the utility of controlling unit-cell topology with the intent of obtaining a desired stress–strain response and energy density. Using mesoscale simulations that resolve the unit-cell sub-structures, we validate the role of unit-cell topology in selectively activating a buckling mode and thereby modulating the characteristic stress–strain response. Simulations incorporate a linear viscoelastic constitutive model and a hyperelastic model for simulating large deformation of the polymer under both tension and compression. Simulated results for nine different cellular structures are compared with experimental data to gain insights into three different modes of buckling and the corresponding stress–strain response.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 2426737
- Alternate ID(s):
- OSTI ID: 2345852
- Report Number(s):
- LA-UR--24-20019
- Journal Information:
- Modelling and Simulation in Materials Science and Engineering, Journal Name: Modelling and Simulation in Materials Science and Engineering Journal Issue: 5 Vol. 32; ISSN 0965-0393; ISSN 1361-651X
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
The role of unit cell topology in modulating the compaction response of additively manufactured cellular materials using simulations and validation experiments
Effect of Part Size, Displacement Rate, and Aging on Compressive Properties of Elastomeric Parts of Different Unit Cell Topologies Formed by Vat Photopolymerization Additive Manufacturing
Technical Report
·
Mon Jun 10 00:00:00 EDT 2024
·
OSTI ID:2377944
Effect of Part Size, Displacement Rate, and Aging on Compressive Properties of Elastomeric Parts of Different Unit Cell Topologies Formed by Vat Photopolymerization Additive Manufacturing
Journal Article
·
Tue Nov 12 19:00:00 EST 2024
· Polymers
·
OSTI ID:2500887