Oscillation of flat layered shells with local elastic supports

1994 ◽  
Vol 30 (2) ◽  
pp. 129-134 ◽  
Author(s):  
L. B. Lerman
Keyword(s):  
Elastic Supports ◽  
Layered Shells

DYNAMIC BEHAVIOR OF AXIALLY MOVING SYSTEMS WITH ELASTIC SUPPORTS

2019 ◽  
Author(s):  
Gabriella Nehemy ◽  
Paulo Gonçalves ◽  
EDSON CAPELLO SOUSA
Keyword(s):  
Dynamic Behavior ◽  
Elastic Supports ◽  
Axially Moving

scholarly journals An Effective Method of Modeling the Deformation Behavior of Polymer Sandwich Structures with Adhesive Joints

2021 ◽  
Author(s):  
László Takács ◽  
Ferenc Szabó
Keyword(s):  
Deformation Behavior ◽  
Sandwich Structures ◽  
Experimental Tests ◽  
Mechanical Tests ◽  
Adhesive Joints ◽  
Core Material ◽  
Full Vehicle ◽  
Novel Approach ◽  
Stiffness Matrices ◽  
Layered Shells

AbstractPolymer sandwich structures have high bending stiffness and strength and also low weight. Therefore, they are widely used in the transportation industry. In the conceptual design phase, it is essential to have a method to model the mechanical behavior of the sandwich and its adhesive joints accurately in full-vehicle scale to investigate different structure partitioning strategies. In this paper, a novel approach using finite element modeling is introduced. The sandwich panels are modeled with layered shells and the joint lines with general stiffness matrices. Stiffness parameters of the face-sheets and the core material are obtained via mechanical tests. Stiffness parameters of the joints are determined by using the method of Design of Experiments, where detailed sub-models of the joints serve as a reference. These models are validated with experimental tests of glass-fiber reinforced vinyl ester matrix composite sandwich structure with a foam core. By using two joint designs and three reference geometries, it is shown that the method is suitable to describe the deformation behavior in a full-vehicle scale with sufficient accuracy.

Tragverhalten von verschraubten Brettsperrholz Wand-Deckenstößen mit und ohne elastische Zwischenlagen/Load carrying capacity of screwed CLT wall- ceiling joints with and without elastic supports

Bauingenieur ◽  
2017 ◽  
Vol 92 (11) ◽  
pp. 495-502
Author(s):  
Roland Maderebner ◽  
Ulrich Gerhaher ◽  
Michael Flach ◽  
Sebastian Hirschmüller
Keyword(s):  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Elastic Supports ◽  
Load Carrying

Durch das Einlegen elastischer Zwischenschichten zur schalltechnischen Entkopplung werden die zum Verbinden einzelner Holzbauteile verwendeten Schrauben, neben Abscheren und Herausziehen zusätzlich auf Biegung beansprucht. Dabei kommt es zu einer erhöhten Nachgiebigkeit zwischen den Stoßfugen der einzelnen Bauteile. Die Gleichungen im Eurocode 5 zur Berechnung der Tragfähigkeiten und Nachgiebigkeiten von Holz-Holz-Verbindungen verlieren durch das Einlegen dieser schubweichen Zwischenschichten ihre Gültigkeit.   Mit dieser Arbeit wird das mechanische Tragverhalten von Wand-Deckenstößen aus Brettsperrholz mit und ohne elastische Zwischenlagen analysiert. Mithilfe von experimentellen Untersuchungen sowie analytischen Ansätzen wird auf das Last-Verformungsverhalten eingegangen und dem aktuellen Stand der Norm gegenübergestellt.

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