Virtual Design, Modelling and Analysis of Functionally graded materials by Fused Deposition Modeling

2016 ◽  
Vol 3 (10) ◽  
pp. 3660-3665 ◽  
Author(s):  
Manu Srivastava ◽  
Sachin Maheshwari ◽  
T.K. Kundra ◽  
Sandeep Rathee ◽  
Ramkrishna Yashaswi ◽  
...  
Keyword(s):  
Functionally Graded Materials ◽  
Fused Deposition Modeling ◽  
Functionally Graded ◽  
Virtual Design ◽  
Graded Materials ◽  
Fused Deposition ◽  
Deposition Modeling

scholarly journals 4D Printing Self-Morphing Structures

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1353 ◽  
Author(s):  
Mahdi Bodaghi ◽  
Reza Noroozi ◽  
Ali Zolfagharian ◽  
Mohamad Fotouhi ◽  
Saeed Norouzi
Keyword(s):  
Composite Structures ◽  
Fused Deposition Modeling ◽  
Functionally Graded ◽  
Complex Structures ◽  
Mechanical Behaviors ◽  
4D Printing ◽  
Digital Tool ◽  
Fused Deposition ◽  
Straightforward Method ◽  
Deposition Modeling

The main objective of this paper is to introduce complex structures with self-bending/morphing/rolling features fabricated by 4D printing technology, and replicate their thermo-mechanical behaviors using a simple computational tool. Fused deposition modeling (FDM) is implemented to fabricate adaptive composite structures with performance-driven functionality built directly into materials. Structural primitives with self-bending 1D-to-2D features are first developed by functionally graded 4D printing. They are then employed as actuation elements to design complex structures that show 2D-to-3D shape-shifting by self-bending/morphing. The effects of printing speed on the self-bending/morphing characteristics are investigated in detail. Thermo-mechanical behaviors of the 4D-printed structures are simulated by introducing a straightforward method into the commercial finite element (FE) software package of Abaqus that is much simpler than writing a user-defined material subroutine or an in-house FE code. The high accuracy of the proposed method is verified by a comparison study with experiments and numerical results obtained from an in-house FE solution. Finally, the developed digital tool is implemented to engineer several practical self-morphing/rolling structures.

Experimental investigations for preparation of biocompatible feedstock filament of fused deposition modeling (FDM) using twin screw extrusion process

2017 ◽  
Vol 31 (11) ◽  
pp. 1455-1469 ◽  
Author(s):  
Rupinder Singh ◽  
Nishant Ranjan
Keyword(s):  
Fused Deposition Modeling ◽  
Extrusion Process ◽  
Functionally Graded ◽  
Experimental Investigations ◽  
Twin Screw Extrusion ◽  
Fused Deposition ◽  
Screw Extrusion ◽  
Twin Screw ◽  
Deposition Modeling ◽  
Ceramic Fillers

Twin screw extrusion (TSE) is one of the commercially established processes for reinforcement of metallic/nonmetallic/ceramic fillers in polymer matrix for tailor-made applications. In this study, biocompatible feedstock filament has been prepared (in-house) for commercial fused deposition modeling (FDM) setup with biocompatible grade polymers, namely polyvinyl chloride and polypropylene which was reinforced with the hydroxyapatite particles. The process parameters (namely, material composition, rotational speed of TSE, die temperature of TSE, HAp particle grain size, and applied load on TSE) were optimized using Taguchi L18 orthogonal array. In this study, mechanical, thermal, and metallurgical properties have been established, and best-feedstock filament wire for development of partial/complete denture on the FDM with functionally graded surfaces properties has been recommended for future applications.

Characterization of Mechanical Property of PLA-ABS Functionally Graded Material Fabricated by Fused Deposition Modeling

2021 ◽  
Author(s):  
Ziyi Su ◽  
Kazuaki Inaba ◽  
Amit Karmakar ◽  
Apurba Das
Keyword(s):  
Tensile Test ◽  
Young’S Modulus ◽  
Natural Frequency ◽  
Functionally Graded Material ◽  
Fused Deposition Modeling ◽  
Young's Modulus ◽  
Functionally Graded ◽  
Fused Deposition ◽  
Graded Material ◽  
Deposition Modeling

Abstract Application of functionally graded materials (FGMs) in energy, aviation and nuclear industries has increased since the last decade due to potential reduction of in-plane and transverse through-the-thickness stresses, enhanced residual stress distribution, superior thermal properties, free from delamination, and reduced stress intensity factors. FGMs are categorized as an advanced class of composite materials where the two constituent materials are graded along the thickness direction. Absence of sharp change in material property in the interface layer eliminates the problem of delamination and debonding, which is a major concern for traditional composite material. In this work, PLA-ABS functionally graded material is manufactured using additive manufacturing techniques through fused deposition modeling (FDM) using Y-type extruder. X-ray computed tomography test is conducted to see the air void (generated during printing) distribution in the printed FGM. Tensile test (as per ISO-527standrad) is conducted to evaluate the Young’s Modulus of additive manufactured FGMs. Three different measuring positions are considered in the FGM specimens to check the effect of property change along the grading direction. Tensile test results of PLA-ABS FGM are compared with their individual constituents (ABS and PLA). Further, flexural vibration test is conducted to evaluate the natural frequency of printed FGM beam. Experimentally determined mechanical and dynamic characteristics in terms effective Young’s Modulus and natural frequency are analyzed and discussed.

Flexural, pull-out, and fractured surface characterization for multi-material 3D printed functionally graded prototype

2019 ◽  
Vol 54 (16) ◽  
pp. 2087-2099 ◽  
Author(s):  
Sudhir Kumar ◽  
Rupinder Singh ◽  
TP Singh ◽  
Ajay Batish
Keyword(s):  
Polylactic Acid ◽  
Surface Characterization ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Functionally Graded ◽  
Wood Dust ◽  
Fused Deposition ◽  
Pull Out ◽  
Deposition Modeling ◽  
Fractured Surface

This paper reports the flexural, pull-out, and fractured surface characterization for multi-material three-dimensional printed functionally graded prototypes, which is prepared on fused deposition modeling setup. The work is an extension of previously reported study in which different thermoplastic matrices of polylactic acid blended with polyvinyl chloride, wood dust, and Fe3O4 powder (as multiple blended feedstock filaments) have been prepared separately with twin screw extrusion for possible three-dimensional printing. Finally, functionally graded prototypes with alternative layers of polylactic acid (01 layer), polylactic acid + polyvinyl chloride (01 layer), polylactic acid + wood dust (02 layers), and polylactic acid + Fe3O4 (02 layers) were three-dimensional printed on fused deposition modeling for flexural samples as per ASTM D790. With regard to process parameters of fused deposition modeling (in this case study), infill density of 100%, infill angle of 45°, and infill speed of 50 mm/s were the optimized processing conditions. The results of study suggest that maximum flexural strength 26.92 MPa and pull-out strength 18.11 MPa were observed for functionally graded multi-material three-dimensional printed prototypes. From fractured surface analysis and hardness result, it has been ascertained that higher infill density and lower infill angle lead to better diffusion of material in layer-by-layer fashion resulting into less void formation and better flexural and pull-out performances. The novelty of this work lies in accessing the behavior of three-dimensional printed prototypes having different functional ability for each layer, with a potential to replace hybrid blend-based prototypes.

Dynamic Analysis with Stress Recovery for Functionally Graded Materials: Numerical Simulation and Experimental Benchmarking

2014 ◽  
Vol 2 (1) ◽  
pp. 21
Author(s):  
Carlos Alberto Dutra Fraga Filho ◽  
Fernando César Meira Menandro ◽  
Rivânia Hermógenes Paulino de Romero ◽  
Juan Sérgio Romero Saenz
Keyword(s):  
Numerical Simulation ◽  
Dynamic Analysis ◽  
Functionally Graded Materials ◽  
Functionally Graded ◽  
Stress Recovery ◽  
Graded Materials
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