Developing an Equivalent Solid Material Model for BCC Lattice Cell Structures Involving Vertical and Horizontal Struts

Abstract

In this study, a body-centered cubic (BCC) lattice unit cell occupied inside a frame structure to create a so-called “InsideBCC” is considered. The equivalent quasi-isotropic properties required to describe the material behavior of the InsideBCC unit cell are equivalent Young’s modulus ( E e ) , equivalent shear modulus ( G e ) , and equivalent Poisson’s ratio ( ν e ) . The finite element analysis (FEA) based computational approach is used to simulate and calculate the mechanical responses of InsideBCC unit cell, which are the mechanical responses of the equivalent solid. Two separates finite element models are then developed for samples under compression: one with a 6 × 6 × 4 cell InsideBCC lattice cell structure (LCS) and one completely solid with equivalent solid properties obtained from a unit cell model. In addition, 6 × 6 × 4 cell specimens are fabricated on a fused deposition modeling (FDM) uPrint SEplus 3D printer using acrylonitrile butadiene styrene (ABS) material and tested experimentally under quasi-static compression load. Then, the results extracted from the finite element simulation of both the entire lattice and the equivalent solid models are compared with the experimental data. A good agreement between the experimental stress–strain behavior and that obtained from the FEA models is observed within the linear elastic limit.

Finite Element Analysis of Orthopedic Hip Implant with Functionally Graded Bioinspired Lattice Structures

“…ANSYS™ software was used for the finite element analysis and in particular, the static structural module was used to simulate the quasi-static loading. Generally, mesh generation for lattice structures could be implemented with two different types of elements: hexahedrals [ 43 ] and tetrahedrals [ 44 ]; in these studies, plenty of references are given towards the use of the different discretization methods. In this research, the mesh consisted of tetrahedral elements for the whole body of the implant.…”

Hybrid Representation of Sensor Data for the Classification of Driving Behaviour

“…In the same direction, Semansjki et al [33] investigated the integration of data generated through the mobile devices and the social media activities can be integrated to Smart City sustainable mobility planning. Having been successfully applied on various domains [34,35], machine learning techniques could eventually lead to "intelligent" mobility criteria, contributing to the decision making, planning and overall sustainable mobility policy of modern Smart Cities. Institutional Review Board Statement: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.…”

Ansatz zur belastungsgerechten Auslegung additiv gefertigter Meso-Strukturen in Bauteilen

“…Bei Untersuchungen zu Anwendungen von Meso-Strukturen werden meist ausgewählte Elementarzellen hinsichtlich ihrer Eignung für die Erfordernisse der Anwendung verglichen u. a. [5][6][7]. Dabei wird deutlich, dass für die Entwicklung eines Bauteils mit AM-Meso-Strukturen zunächst eine geeignete Elementarzelle gewählt und diese anschließend dimensioniert und auf die Beanspruchungen im Bauteil abgestimmt werden muss.…”

“…Zur Beschreibung der Eigenschaften wird in der Literatur der Ansatz der äquivalenten Kontinuumseigenschaften beschrieben [5][6][7]. Dabei wird die betrachtete Elementarzelle einzeln mittels Finite-Elemente-Methode (FEM) simuliert und deren Eigenschaften, z.…”