key features of FDM

There are a number of key features that are common to any extrusion-based system:

– Loading of material

– Liquification of the material

– Application of pressure to move the material through the nozzle

– Extrusion

– Plotting according to a predefined path and in a controlled manner

– Bonding of the material to itself or secondary build materials to form a coherent

solid structure

– Inclusion of support structures to enable complex geometrical features.

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Classification of Additive Manufacturing (3D printing)

Gyroid Structure

The below code written in the MATLAB® can be used for generating the Gyroid structure. %% Program clc; clear all; n1 = 2; % Number of cells in x Direction n2 = 2; % Number of cells in y Direction n3 = 2; % Number of cells in z Direction a=2*n1*pi; % x direction parameters b=2*n2*pi; % y direction parameters g=2*n3*pi; % z direction parameters s=0.01; [x,y,z]=meshgrid(-0.5:s:0.5,-0.5:s:0.5,-0.5:s:0.5); % Gyroid Formula u = (sin(a.*x).* cos(b.*y) + sin(b.*y).* cos(g.*z) + sin(g.*z).* cos(a.*x)); % Level Set equation c =0.7; Ts= -(u+c).*(u-c); % Sheet based Gyroid Tsk= u + c; % Skeletal based Gyroid Isosurface(x,y,z,Ts,0); Isocaps(x,y,z,Ts,0); %% Program Ends If very less knowledge about coding, then the below software can be used for generating Gyroid and other lattice structures. Using Lattice_Karak helps in designing v...

Generating Lattice Structures

Lattice structures are getting lots of momentum in various fields due to their eccentric properties [1] . It is very important to have easy method to design these lattice structures. Lattice_Karak [2] helps in getting the work done. It is free software with UI made for students and researchers. Using Lattice_Karak helps in designing various TPMS structures, export them into stl file for further processing like 3D printing and Finite Element analysis. Lattice_Karak can be downloaded using the below link. https://drive.google.com/file/d/1WWL-UbPzErFCFVFJqw1as9w0M61aMxB4/view?usp=sharing Videos on how to further use lattice_karak. https://youtu.be/CuHQwsxPa3I https://sites.google.com/iith.ac.in/lattice-karak/home Suggested materials for understanding more about TPMS: 1) https://doi.org/10.1016/j.addma.2017.12.006 2) https://doi.org/10.1016/j.matdes.2017.03.018 3) https://doi.org/10...

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