Zur Knittertragfähigkeit von Sandwichelementen unter lokaler Beanspruchung

Lübke, Sebastian; Ungermann, Dieter

doi:10.1002/stab.201510322

Cited by 4 publications

(9 citation statements)

References 5 publications

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“…Based on Kilian (6), Misiek et al (7) and Lübke (8), the dimensions of the specimens were set to be 400 x 400 mm. Based on Kilian (6), Misiek et al (7) and Lübke (8), the dimensions of the specimens were set to be 400 x 400 mm.…”

Section: Basics and Test Setupmentioning

confidence: 99%

Resistance of Direct Fixings of Sandwich Panels under Cyclic Loading

Engel

Lange

2019

ce papers

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Within the scope of a research project, the pull-through resistance of direct fixings of sandwich panels under cyclic loading was determined on small-scale sandwich specimens. The tests were carried out on wall panels with lined steel face sheets. Various core materials (PU foam, mineral wool), face sheet thicknesses, panel depths and various screw manufacturers were combined. From the test results, cyclic reduction factors for fixings on the mid and end support were determined according to prEN 14509-2.

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Section: Basics and Test Setupmentioning

confidence: 99%

Resistance of Direct Fixings of Sandwich Panels under Cyclic Loading

Engel

Lange

2019

ce papers

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“…6. Shape value ζ depending on screw distance [7] Bild 7. Vergleichsrechnung Knittertragfähigkeit bei punktueller Lasteinleitung [7] Fig.…”

Section: Herleitung Der Ideellen Knitterverzeigungslastunclassified

“…7. Comparison calculation of wrinkling strength for point loads [7] lokalen Lasteinleitung durch geometrische Ersatzimperfektionen zu berücksichtigen.…”

Section: Herleitung Der Ideellen Knitterverzeigungslastunclassified

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Zur Knittertragfähigkeit von Sandwichelementen unter lokaler Beanspruchung

Lübke

Ungermann

2015

Stahlbau

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07.28: Fastening to face sheets of sandwich panels

Misiek

Käpplein

2017

ce papers

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In several applications the need to anchor loads in sandwich panels arises. This is normally done by introducing the load into one face, using mechanical fasteners such as screws or rivets for tensile and shear forces or contact for compression forces. Nowadays the most common example for these applications are fastening of solar cells (PV-modules) on sandwich roof panels or fastening of additional façade layers on sandwich wall panels. The paper deals with the different possibilities of introducing forces into the panels, covering both flat or lightly profiled faces used for walls and profiled faces used for roofs. Special attention is paid to design, including verification of fastenings, web crippling of profiled faces and effect on global load-bearing behaviour of the sandwich panels. In a second step, delamination caused by tensile forces is investigated in more detail: Pull-out failure is generally the acceptable failure mode and can be achieved by keeping a minimum edge distance. But if repeated loads such as wind loads are acting on the fasteners, the governing failure mode tends to be delamination at lower load levels. Small cracks in the bond layer grow until final failure of the connection or even of the complete sandwich panel by reducing the wrinkling strength of the face. To study both, the influence of the edge distance and the effect of repeated loads, experimental tests and numerical investigations were performed. The results are presented and discussed. ECCS TC7 TWG7.9 and CIB W056 are currently working on a document dealing with point and line loads acting on sandwich panels. Fastening to face sheets of sandwich panels is one of several topics. Thus the present paper may be regarded as a position paper, showing the state of the art related to a specific single item of the document and giving additional references related to this topic.

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Zur Knittertragfähigkeit von Sandwichelementen unter lokaler Beanspruchung

Cited by 4 publications

References 5 publications

Resistance of Direct Fixings of Sandwich Panels under Cyclic Loading

Resistance of Direct Fixings of Sandwich Panels under Cyclic Loading

Zur Knittertragfähigkeit von Sandwichelementen unter lokaler Beanspruchung

07.28: Fastening to face sheets of sandwich panels

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