Computational investigation on the combined effect of applied strain and pore configuration on strain concentrators in additively manufactured metals

Computational investigation on the combined effect of applied strain and pore configuration on strain concentrators in additively manufactured metals | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 17 September 2025 V1 Latest version Share on Computational investigation on the combined effect of applied strain and pore configuration on strain concentrators in additively manufactured metals Authors : Erick Adan Ramirez 0009-0004-9001-7646 [email protected] , Saikumar Reddy Yeratapally , George Robert Weber , and Kenji Shimada Authors Info & Affiliations https://doi.org/10.22541/au.175808902.24119127/v1 189 views 147 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Metal additive manufacturing (AM) provides a pathway for creating highly optimized components that would be difficult to produce using traditional manufacturing methods. However, regardless of printing parameters or post-processing, porosity remains a prevalent challenge in AM components because strain concentrates in the vicinity of the pore, compromising fatigue performance. This study uses finite element analysis to investigate the combined effect of applied load, pore aspect ratio, orientation, and location on strain concentration factors (ECF) under elastic and plastic deformation. Keyhole and lack-of-fusion pores are idealized as prolate and oblate ellipsoids, respectively. Isolated porosity is modeled through J 2 plasticity simulations in an automated workflow. Ultimately, novel explicit formulas relating the applied strain and pore configuration to ECF are developed. The model is used to rapidly quantify the uncertainty and extreme values in ECF, where the distribution of inputs is obtained from statistics of AM builds, to advance the development of computationally assisted approaches for qualification of AM components. Supplementary Material File (porosity_paper__wiley_njdv5___ffems submission.pdf) Download 6.66 MB Information & Authors Information Version history V1 Version 1 17 September 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords additive materials finite element analysis porosity strain localisation stress concentration Authors Affiliations Erick Adan Ramirez 0009-0004-9001-7646 [email protected] Carnegie Mellon University View all articles by this author Saikumar Reddy Yeratapally Science and Technology Corporation View all articles by this author George Robert Weber NASA Langley Research Center View all articles by this author Kenji Shimada Carnegie Mellon University View all articles by this author Metrics & Citations Metrics Article Usage 189 views 147 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Erick Adan Ramirez, Saikumar Reddy Yeratapally, George Robert Weber, et al. Computational investigation on the combined effect of applied strain and pore configuration on strain concentrators in additively manufactured metals. Authorea . 17 September 2025. DOI: https://doi.org/10.22541/au.175808902.24119127/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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