Deformation Process of 3D Printed Structures Made from Flexible Material with Different Values of Relative Density

被引:62
作者
Platek, Pawel [1 ]
Rajkowski, Kamil [1 ]
Cieplak, Kamil [1 ]
Sarzynski, Marcin [1 ]
Malachowski, Jerzy [2 ]
Wozniak, Ryszard [1 ]
Janiszewski, Jacek [1 ]
机构
[1] Mil Univ Technol, Fac Mechatron & Aerosp, 2 Gen S Kaliskiego St, PL-00908 Warsaw, Poland
[2] Mil Univ Technol, Fac Mech Engn, 2 Gen S Kaliskiego St, PL-00908 Warsaw, Poland
关键词
3D printing; Fused Filament Fabrication; thermoplastic polyurethane; energy absorption; dynamic compression; crashworthiness; Simplified Rubber Material; Ls Dyna; MECHANICAL CHARACTERIZATION; COMPOSITES; POLYURETHANE; TECHNOLOGY; VALIDATION; BEHAVIOR; TYRE;
D O I
10.3390/polym12092120
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The main aim of this article is the analysis of the deformation process of regular cell structures under quasi-static load conditions. The methodology used in the presented investigations included a manufacturability study, strength tests of the base material as well as experimental and numerical compression tests of developed regular cellular structures. A regular honeycomb and four variants with gradually changing topologies of different relative density values have been successfully designed and produced in the TPU-Polyflex flexible thermoplastic polyurethane material using the Fused Filament Fabrication (FFF) 3D printing technique. Based on the results of performed technological studies, the most productive and accurate 3D printing parameters for the thermoplastic polyurethane filament were defined. It has been found that the 3D printed Polyflex material is characterised by a very high flexibility (elongation up to 380%) and a non-linear stress-strain relationship. A detailed analysis of the compression process of the structure specimens revealed that buckling and bending were the main mechanisms responsible for the deformation of developed structures. The Finite Element (FE) method and Ls Dyna software were used to conduct computer simulations reflecting the mechanical response of the structural specimens subjected to a quasi-static compression load. The hyperelastic properties of the TPU material were described with the Simplified Rubber Material (SRM) constitutive model. The proposed FE models, as well as assumed initial boundary conditions, were successfully validated. The results obtained from computer simulations agreed well with the data from the experimental compression tests. A linear relationship was found between the relative density and the maximum strain energy value.
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页数:25
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共 55 条
[1]   Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Structures Manufactured by Laser Engineered Net Shaping (LENSTM) Technology [J].
Antolak-Dudka, Anna ;
Platek, Pawel ;
Durejko, Tomasz ;
Baranowski, Pawel ;
Malachowski, Jerzy ;
Sarzynski, Marcin ;
Czujko, Tomasz .
MATERIALS, 2019, 12 (08)
[2]   Influence of energy absorbers on Malgaigne fracture mechanism in lumbar-pelvic system under vertical impact load [J].
Arkusz, K. ;
Klekiel, T. ;
Slawinski, G. ;
Bedzinski, R. .
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING, 2019, 22 (03) :313-323
[3]   Composite 3D printing for the small size unmanned aerial vehicle structure [J].
Azarov, Andrey V. ;
Antonov, Fedor K. ;
Golubev, Mikhail V. ;
Khaziev, Aleksey R. ;
Ushanov, Sergey A. .
COMPOSITES PART B-ENGINEERING, 2019, 169 :157-163
[4]   Deformation of honeycomb cellular structures manufactured with Laser Engineered Net Shaping (LENS) technology under quasi-static loading: Experimental testing and simulation [J].
Baranowski, Pawel ;
Platek, Pawel ;
Antolak-Dudka, Anna ;
Sarzynski, Marcin ;
Kucewicz, Michal ;
Durejko, Tomasz ;
Malachowski, Jerzy ;
Janiszewski, Jacek ;
Czujko, Tomasz .
ADDITIVE MANUFACTURING, 2019, 25 (307-316) :307-316
[5]   Numerical and experimental testing of vehicle tyre under impulse loading conditions [J].
Baranowski, Pawel ;
Malachowski, Jerzy ;
Mazurkiewicz, Lukasz .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2016, 106 :346-356
[6]   Detailed tyre FE modelling with multistage validation for dynamic analysis [J].
Baranowski, Pawel ;
Malachowski, Jerzy ;
Janiszewski, Jacek ;
Wekezer, Jerry .
MATERIALS & DESIGN, 2016, 96 :68-79
[7]   Compressive behaviour of 3D printed thermoplastic polyurethane honeycombs with graded densities [J].
Bates, Simon R. G. ;
Farrow, Ian R. ;
Trask, Richard S. .
MATERIALS & DESIGN, 2019, 162 :130-142
[8]   An investigation into 3D printing of fibre reinforced thermoplastic composites [J].
Blok, L. G. ;
Longana, M. L. ;
Yu, H. ;
Woods, B. K. S. .
ADDITIVE MANUFACTURING, 2018, 22 :176-186
[9]   Large deformations of soft metamaterials fabricated by 3D printing [J].
Bodaghi, M. ;
Damanpack, A. R. ;
Hu, G. F. ;
Liao, W. H. .
MATERIALS & DESIGN, 2017, 131 :81-91
[10]   Dynamic behaviour of auxetic gradient composite hexagonal honeycombs [J].
Boldrin, L. ;
Hummel, S. ;
Scarpa, F. ;
Di Maio, D. ;
Lira, C. ;
Ruzzene, M. ;
Remillat, C. D. L. ;
Lim, T. C. ;
Rajasekaran, R. ;
Patsias, S. .
COMPOSITE STRUCTURES, 2016, 149 :114-124