Methodische Strukturentwicklung eines Großroboters/Research project „FlexGrind“

2021 ◽  
Vol 111 (09) ◽  
pp. 628-632
Author(s):  
Alexander Jentsch ◽  
Steffen Dryba ◽  
Christian Klötzer ◽  
Andre Siegrist ◽  
Armin Vincon
Keyword(s):  
Topology Optimization ◽  
Bearing Capacity ◽  
Structural Components ◽  
Load Bearing Capacity ◽  
Research Project ◽  
Load Bearing ◽  
Positioning Errors ◽  
Working Space ◽  
Process Forces ◽  
Processing Step

Die mechanische Nachbearbeitung von Propellergussrohlingen im Schiffbau ist ein manuell geprägter, zeitintensiver Bearbeitungsschritt. Eine Automatisierungslösung ist mithilfe eines Großroboters aufgrund seiner Tragfähigkeit und seines Arbeitsraumes möglich [1]. Um Positionsfehler und Schwingungsanfälligkeiten des Roboters durch auftretende Prozesskräfte zu vermeiden, sind hochsteife Strukturbauteile notwendig, für deren Entwicklung das Fraunhofer-Institut für Groß- strukturen in der Produktionstechnik (IGP) die Topologieoptimierung einsetzt.   The mechanical finishing of propeller casting blanks in shipbuilding is a manually characterized, time-intensive processing step. An automation solution is possible by means of a large robot due to its load-bearing capacity and working space. In order to avoid positioning errors and vibration susceptibility of the robot due to occurring process forces, highly rigid structural components are necessary, for the development of which Fraunhofer IGP uses topology optimization.

Investigation of the load-bearing behavior of composite joints in cross-section supplements for concrete structures

2021 ◽  
Author(s):  
Christian Knorrek ◽  
Sven Bosbach ◽  
Josef Hegger
Keyword(s):  
Bearing Capacity ◽  
Structural Concrete ◽  
Load Bearing Capacity ◽  
Research Project ◽  
Cross Sectional ◽  
Ongoing Research ◽  
Load Bearing ◽  
Existing Structures ◽  
Composite Joint ◽  
Bearing Behavior

<p>The strengthening with cross-sectional supplements made of reinforced concrete is already of great importance in building, bridge, and industrial constructions and will be further developed in the future because of the increasing demands on existing structures [1]- [3].</p><p>As part of an ongoing research project at the Institute of Structural Concrete at RWTH Aachen University, funded by the German Federation of Industrial Research Associations (AiF), a correlation between the method of surface treatment of the old concrete, the measured roughness, the type of concrete supplementation, and the load-bearing capacity of the composite joint has to be derived by means of new systematic test series. As a result, a database, and a possible practical guide on the load-bearing capacity of different combinations of old concretes, surface treatments, supplementary concrete layers, and bonding conditions will be developed. This paper will present the initial findings from this research project.</p>

scholarly journals Topology optimization of load-bearing capacity

2021 ◽  
Author(s):  
Leyla Mourad ◽  
Jeremy Bleyer ◽  
Romain Mesnil ◽  
Joanna Nseir ◽  
Karam Sab ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Load Bearing

Increased load bearing capacity of mechanically joined FRP/metal joints using a pin structured auxiliary joining element

2020 ◽  
Vol 62 (1) ◽  
pp. 55-60
Author(s):  
Per Heyser ◽  
Vadim Sartisson ◽  
Gerson Meschut ◽  
Marcel Droß ◽  
Klaus Dröder
Keyword(s):  
Bearing Capacity ◽  
Load Bearing Capacity ◽  
Load Bearing

Load-Bearing Capacity of Direct Inlay-Retained Fibre-reinforced Composite Fixed Partial Dentures with Different Cross-Sectional Pontic Design

2017 ◽  
Vol 68 (1) ◽  
pp. 94-100
Author(s):  
Oana Tanculescu ◽  
Adrian Doloca ◽  
Raluca Maria Vieriu ◽  
Florentina Mocanu ◽  
Gabriela Ifteni ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Fracture Pattern ◽  
Load Bearing Capacity ◽  
Cross Sectional ◽  
Load Bearing ◽  
Reinforced Composite ◽  
Polyethylene Fibre

The load-bearing capacity and fracture pattern of direct inlay-retained FRC FDPs with two different cross-sectional designs of the ponticwere tested. The aim of the study was to evaluate a new fibre disposition. Two types of composites, Filtek Bulk Fill Posterior Restorative and Filtek Z250 (3M/ESPE, St. Paul, MN, USA), and one braided polyethylene fibre, Construct (Kerr, USA) were used. The results of the study suggested that the new tested disposition of the fibres prevented in some extend the delamination of the composite on buccal and facial sides of the pontic and increased the load-bearing capacity of the bridges.

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