Browsing TKD - Institutt for bygg- og energiteknikk by Author "Reyes, Aase"
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A continuum approach to multiaxial high-cycle fatigue modeling for ductile metallic materials
Tveit, Sigbjørn; Reyes, Aase; Erduran, Emrah (Results in Engineering (RINENG);, Peer reviewed; Journal article, 2024)In this work we propose a generalization of the endurance function employed in the continuum approach to high-cycle fatigue modeling by Ottosen et al. (2008). The von Mises-type backstress-modified effective stress term ... -
Experimental Tests and Numerical Simulations on the Ballistic Impact Response of a Highly Inhomogeneous Aluminium Foam
Brekken, Kristoffer Aune; Vestrum, Ole; Dey, Sumita; Reyes, Aase; Børvik, Tore (Materials;Volume 15 / Issue 13, Peer reviewed; Journal article, 2022-07-01)A sandwich structure is a composite material consisting of thin skins encapsulating a cellular core. Such structures have proven to be excellent energy absorbents and are frequently found in various types of protection. ... -
Formability analyses of AA6016-T4 aluminum alloy sheets subjected to roping
Tveit, Sigbjørn; Reyes, Aase (Chapter; Peer reviewed; Conference object; Journal article, 2024)Due to its good formability characteristics, AA6xxx aluminum alloys have become popular as a light-weight alternative to steel for car bodywork components produced by stamping. In the design of forming operations, numerical ... -
Forming effects on high-cycle fatigue in an aluminum sheet structure using the Ottosen-Stenström-Ristinmaa model
Tveit, Sigbjørn; Reyes, Aase; Erduran, Emrah (Chapter, 2022) -
Low velocity impact on crash components with steel skins and polymer foam cores
Reyes, Aase; Børvik, Tore (International Journal of Impact Engineering;Volume 132, 103297, Journal article; Peer reviewed, 2019-05-09)Energy absorbing systems are extensively used in the automotive industry to ensure crashworthiness. Such crash components could typically consist of a sandwich structure with thin ductile plates as skins and a cellular ... -
On the ballistic perforation resistance of a sandwich structure with aluminium skins and aluminium foam core
Brekken, Kristoffer Aune; Bakk, Maria S.; Dey, Sumita; Berstad, Torodd; Reyes, Aase; Børvik, Tore (Peer reviewed; Journal article, 2023)Sandwich structures have proven to be excellent energy absorbents and are found in various protective solutions. In this study, an inhomogeneous aluminium foam was used as core material in a sandwich panel with skins of ... -
Parametric failure limit detection for the sheet metal forming of a floating photovoltaic (FPV) aluminum alloy structure
Tveit, Sigbjørn; Reyes, Aase; Erduran, Emrah (Chapter; Peer reviewed; Conference object; Journal article, 2024)The sheet metal forming process of a floating photovoltaic (FPV) structure is simulated in LS-DYNA. An anisotropic yield criterion and a two-term Voce hardening law are used to model the plastic behavior of AA5083-H111 ... -
A submodeling technique for incorporating sheet metal forming effects in an AA5083 FPV structure
Tveit, Sigbjørn; Reyes, Aase (Structures;, Peer reviewed; Journal article, 2024)While the first generation of floating photovoltaics (FPV) was designed for operation in freshwater reservoirs, the technology is currently expanding to marine territories. In this paper, an FPV structure made from formed ... -
Topologioptimalisering i byggebransjen
Mahmood, Qassed; Ismail, Suzana; Alsosi, Hani; Al-Mogahed, Maad (Bachelor thesis, 2023)Denne rapporten, "Hvordan kan topologioptimalisering anvendes i byggebransjen?", har som mål å forklare prinsippene bak topologioptimalisering og hvordan denne teknikken kan implementeres i byggebransjen. Topologioptimalisering ...