A method to generate lattice structure for Additive Manufacturing

Additive Manufacturing (AM), popularly called 3D Printing, is a scientific term indicating the Rapid Prototyping (RP) technologies developed in 1980s. AM technologies can directly fabricate a complex 3D object from three-dimensional Computer Aided Design (3D CAD) model by adding layer-by-layer of material. Advances in AM technologies are capable of manufacturing highly complicated geometries of product without the need for process planning, the reduction of product development time and cost, the removal of tooling compared to conventional manufacturing technologies. The production of lattice structures is quickly performed by AM technologies in order to attain a product with lightweight and stronger and to provide the high specific mechanical properties such as strength and energy absorption. However, the current product modelling technologies have many difficulties for generation of lattice structure model. Thus, the paper proposes a new approach that allows to create different configuration types of conformal and non-conformal lattice structure model.

[1]  John W Hutchinson,et al.  Cellular metals , 2001 .

[2]  K. Leong,et al.  The design of scaffolds for use in tissue engineering. Part II. Rapid prototyping techniques. , 2002, Tissue engineering.

[3]  S. Raman,et al.  A design for the additive manufacture of functionally graded porous structures with tailored mechanical properties for biomedical applications , 2011 .

[4]  David W. Rosen,et al.  Computer-Aided Design for Additive Manufacturing of Cellular Structures , 2007 .

[5]  David W. Rosen,et al.  Design for Additive Manufacturing of Cellular Structures , 2008 .

[6]  M. A. Wettergreen,et al.  Computer-Aided Tissue Engineering of a Human Vertebral Body , 2005, Annals of Biomedical Engineering.

[7]  J. Grotowski,et al.  High specific strength and stiffness structures produced using selective laser melting , 2014 .

[8]  Wesley J. Cantwell,et al.  The Mechanical Properties of Sandwich Structures Based on Metal Lattice Architectures , 2010 .

[9]  Martin Leary,et al.  Programmatic Lattice Generation for Additive Manufacture , 2015 .

[10]  Dinh Son Nguyen.  Towards a Geometric Deviation Model of Product in CAD Environment , 2013 .

[11]  Christopher J. Sutcliffe,et al.  Convective heat transfer and pressure losses across novel heat sinks fabricated by Selective Laser Melting , 2009 .

[12]  Mohsen Badrossamay,et al.  Numerical investigation on mechanical properties of cellular lattice structures fabricated by fused deposition modeling , 2014 .

[13]  Umesh N. Gandhi,et al.  Design and fabrication of periodic lattice-based cellular structures , 2016 .