Friction coefficients for steel to steel contact surfaces in air and seawater

Pijpers, R.J.M.; Slot, Henk

doi:10.1088/1742-6596/1669/1/012002

Cited by 20 publications

(10 citation statements)

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“…The plates were constrained in the load direction x by zero translation of the boundary nodes, and with double orthogonal symmetry planes intersecting at the epicenter of the impacts. The constraint between the two plates was assured by setting a penalty contact with a static and dynamic friction coefficient of 0.65, typical for clean dry steel-on-steel interactions [25]. integrated 4-node shell elements with 16 integration points in the thickness.…”

Section: Finite Element Simulation Setupmentioning

confidence: 99%

Ballistic Impacts with Bullet Splash—Load History Estimation for .308 Bullets vs. Hard Steel Targets

et al. 2023

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The study focuses on testing a simplified way of estimating the resultant force due to ballistic impacts resulting in a full fragmentation of the impactor with no penetration of the target. The method is intended to be useful for the parsimonious structural assessment of military aircrafts with integrated ballistic protection systems by means of large scale explicit finite element simulations. The research investigates the effectiveness of the method in allowing the prediction of the fields of plastic deformation collected by hard steel plates impacted by a wide range of semi-jacketed, monolithic, and full metal jacket .308 Winchester rifle bullets. The outcomes show the effectiveness of the method being strictly related to the full compliance of the considered cases with the bullet-splash hypotheses. The study therefore suggests the application of the load history approach only after careful experimental investigations on the specific impactor–target interactions.

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Section: Finite Element Simulation Setupmentioning

confidence: 99%

Ballistic Impacts with Bullet Splash—Load History Estimation for .308 Bullets vs. Hard Steel Targets

et al. 2023

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“…Coherently with the experimental setup, a rigid slab was modelled at the bottom and the vertical displacement was avoided at the base, in the mid of the wall thickness. Point-to-point interface elements accounting for the apparatus steel-to-steel friction were introduced at the supports and loading points (coefficient of static friction 0.30, according to [25]). Coherently to the experimental loading procedure, the sample self-weight, in the vertical direction, was at first applied and maintained constant during the simulation; then, horizontal forces were introduced at the thirds of the sample height, at the back side.…”

Section: Out-of-plane Bending Testsmentioning

confidence: 99%

Masonry elements strengthened through Textile-Reinforced Mortar: application of detailed level modelling with a free open-source Finite-Element code

Boem

2022

Construction and Building Materials

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“…In the design, the upper or lower bound friction value should be used, whichever is more conservative for that particular load case. Some of the friction results have been published in [5].…”

Section: Articlementioning

confidence: 99%

Borssele V slip joint connection: design, certification and installation of the world's first full‐size submerged slip joint

Suur¹,

Hengeveld²

2022

Steel Construction

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In April 2020 the world's first full-size submerged slip joint connection was installed at the Borssele Site V offshore wind farm. This event marked the launch of a new, alternative transition piece/monopile (TP/MP) connection for the offshore wind market. An extensive qualification programme in terms of numerical modelling and testing was set up prior to installing the slip joint. This process was witnessed, reviewed and accepted by DNVGL. It led to a certified slip joint design for Borssele V, with a 9.5 MW wind turbine generator (WTG) on top of the foundation as well as an A-level component certificate for the slip joint in general. The installation of the slip joint for Borssele V was the first use of this connection in a commercial full-size wind turbine. The implementation of the slip joint connection at Borssele V demonstrated the benefits of the slip joint in terms of simple, safe and fast installation as well as the option for using the slip joint submerged, thus allowing a more optimized weight/length split between MP and TP and the use of smaller installation vessels. A monitoring campaign was executed during and after installation to provide lessons for future slip joint designs. Reducing the levelized cost of energy (LCoE) requires big steps in technology innovation. The Borssele V offshore wind farm offered a unique opportunity to demonstrate to the industry that the slip joint connection is fully feasible and ready for practical implementation. The slip joint: simple connection, ingenious design.

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Friction coefficients for steel to steel contact surfaces in air and seawater

Cited by 20 publications

References 0 publications

Ballistic Impacts with Bullet Splash—Load History Estimation for .308 Bullets vs. Hard Steel Targets

Ballistic Impacts with Bullet Splash—Load History Estimation for .308 Bullets vs. Hard Steel Targets

Masonry elements strengthened through Textile-Reinforced Mortar: application of detailed level modelling with a free open-source Finite-Element code

Borssele V slip joint connection: design, certification and installation of the world's first full‐size submerged slip joint

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