Compression behavior and energy absorption of 3D printed continuous fiber reinforced composite honeycomb structures with shape memory effects

Zeng, Chengjun; Liu, Liwu; Bian, Wenfeng; Leng, Jinsong; Liu, Yanju

doi:10.1016/j.addma.2021.101842

Cited by 56 publications

(33 citation statements)

References 42 publications

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“…The samples were compressed at a quasi-static axial loading speed rate at 1.5 mm/min. To exclude the influence of the build printing orientation on the mechanical responses, all samples were loaded in the perpendicular upright direction with printing orientation (Bai et al, 2020;Hossain et al, 2021;Zeng et al, 2021). The samples were compressed just enough until yielding occurrence can be discerned graphically in stress-strain plots during the compression test.…”

Section: Compression Testmentioning

confidence: 99%

Lattice structure design parameters optimization for the structural integrity of passive vibration isolator

Azmi¹,

Ismail²,

Abdollah³

2022

Manufacturing Technology

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Passive vibration isolator with lower natural frequency has always been a challenge due to structural integrity issues. This study presents the use of RSM statistical tool to analyze and optimize the mechanical responses of BCC lattice structure for structural integrity in a passive vibration isolator application. The optimization was done to obtain low stiffness for low natural frequency but high yield stress for optimum load-bearing capability with unit cell size and strut diameter design parameters tweak. From the results, the significance and contribution of each design parameter on each mechanical response through compression test can be understood. Results indicated changes in strut diameter produced linear growth while changes in the unit cell size produced inverse exponential responses. From optimization, a combination of 3.9 mm strut diameter with 10 mm unit cell size produced the optimum result. Therefore, it was demonstrated that RSM can provide statistical importance and contribution between input factors and their influence on each mechanical response with minimal test and cost.

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Section: Compression Testmentioning

confidence: 99%

Lattice structure design parameters optimization for the structural integrity of passive vibration isolator

Azmi¹,

Ismail²,

Abdollah³

2022

Manufacturing Technology

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“…To test the accuracy of theoretical predictions, identical samples were consequently produced using PolyJet technology from Vero PureWhite polymer and two independent laser powder bed fusion systems from stainless steel 316L and Ti6Al4V titanium alloy. Previous studies dealing with honeycomb structure tested the lattice by compression [ 7 , 8 , 9 ], bending [ 10 ], or rely on theoretical analysis only [ 11 ]. Within the presented study, the mechanical properties of the honeycomb structure were predicted using the analytical and the numerical model.…”

Section: Introductionmentioning

confidence: 99%

“…The accuracy of predictions was verified by experimental results using three different materials in the tensile test. The tensile test is more appropriate for additively manufactured materials as it can identify defects of materials due to lack of fusion, keyhole collapse, or gas porosity more effectively than compression tests [ 7 ]. In a compression test, material defects may close up and do not have a significant impact on behavior under compression modes of loading [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Honeycomb Lattice Structure—From Theoretical Models to Polymer and Metal Products

et al. 2022

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The study aims to compare mechanical properties of polymer and metal honeycomb lattice structures between a computational model and an experiment. Specimens with regular honeycomb lattice structures made of Stratasys Vero PureWhite polymer were produced using PolyJet technology while identical specimens from stainless steel 316L and titanium alloy Ti6Al4V were produced by laser powder bed fusion. These structures were tested in tension at quasi-static rates of strain, and their effective Young’s modulus was determined. Analytical models and finite element models were used to predict effective Young’s modulus of the honeycomb structure from the properties of bulk materials. It was shown, that the stiffness of metal honeycomb lattice structure produced by laser powder bed fusion could be predicted with high accuracy by the finite element model. Analytical models slightly overestimate global stiffness but may be used as the first approximation. However, in the case of polymer material, both analytical and FEM modeling significantly overestimate material stiffness. The results indicate that computer modeling could be used with high accuracy to predict the mechanical properties of lattice structures produced from metal powder by laser melting.

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“…It was shown that hexagonal structures overlapped and square structures were broken. Each structure, under the influence of temperature (70°C), returned to the state before the compression test [2].…”

Section: Introductionmentioning

confidence: 99%

Compressive properties of cell structures manufactured by photo-curing technology liquid polymer resins – Polyjet Matrix

Rudnik

2022

Mechanik

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The article presents the results of compressive strength tests of cylindrical samples with a hexagonal cell structure. The samples were made of MED 610 material using the photo-curing technology liquid polymer resins. The compressive strength was estimated on the basis of a static compression test of the printed elements. It has been shown that the PolyJet Matrix 3D printing technology enables the printing models with a thin-walled cell structure, which, while maintaining the appropriate strength properties, can be used in the design and production of certain utility models.

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Compression behavior and energy absorption of 3D printed continuous fiber reinforced composite honeycomb structures with shape memory effects

Cited by 56 publications

References 42 publications

Lattice structure design parameters optimization for the structural integrity of passive vibration isolator

Lattice structure design parameters optimization for the structural integrity of passive vibration isolator

Additive Manufacturing of Honeycomb Lattice Structure—From Theoretical Models to Polymer and Metal Products

Compressive properties of cell structures manufactured by photo-curing technology liquid polymer resins – Polyjet Matrix

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