Comparison of As-Built FEA Simulations and Experimental Results for Additively Manufactured Dogbone Geometries

Abstract

Fused Deposition Modeling (FDM - a technology of additive manufacturing) parts entail a certain amount of ambiguity in terms of its material properties and microstructure due to its manufacturing technique. Therefore, an FDM part differs from its design model in terms of strength and stiffness. With an increasing amount of FDM parts being used as end use products, it is necessary to simulate and analyze them. Due to the differences in microstructure and material properties of FDM parts, it is necessary to determine the accuracy of analysis methods like Finite Element Analysis (FEA) while analyzing the non-continuous, non-linear FDM parts. The goal of this study is to compare FEA simulations of the as-built geometries with the experimental tests of actual FDM parts. A dogbone geometry with different infill patterns is tested under tensile loading. Further, as-built 3D models are simulated using FEA and the stress results are compared with experimental data. This study found that FEA results are not always an accurate or reliable means of predicting FDM part behaviors.

Characterization of the Mechanical Properties of FFF Structures and Materials: A Review on the Experimental, Computational and Theoretical Approaches

“…FFF parts can be used in a wide range of applications, namely Unmanned Aerial Vehicle (UAV) [12], dentistry [13], electrochemical batteries [14], lattice and cellular materials [15,16,17], sandwich structures [18], tissue engineering scaffolds [11,19,20], and even in parts for 3D printers [21]. Even the food industry has explored the fused deposition process for food, for instance, to print with pasta, pork, pizza dough, chocolate, etc.…”

Comparison of FEA simulations and experimental results for as-built additively manufactured dogbone specimens

“…The work presented in this paper is developed from the thesis work of Baikerikar [40]. The authors wish to gratefully acknowledge the support of the Clemson University Mechanical Engineering Department, and Dr. Garrett Pataky for providing access to the load testing equipment in his laboratory.…”

Perkiraan Kekuatan Struktur Mekanik Side Scraper dengan Metode Elemen Hingga Beserta Rekomendasi Material Pengganti Elemen Kritis

“…Langkah awal dalam melaksanakan penelitian ini adalah melakukan studi literatur mengenai side scraper berupa prinsip kerja, komponen-komponen utama, pemodelan beban statis [9], simulasi tegangan [10] [11], dan pemilihan material [12]. Pada penelitian ini analisis seluruh komponen mekanik menggunakan analisis statik.…”