Browsing by Author "Kreimeyer, Matthias"

Now showing 1 - 14 of 14

Open Access
Artificial intelligence techniques for improving cylindrical shrink-fit shaft-hub couplings
(2023) Saeed, Muhammad Shahrukh; Falter, Jan; Dausch, Valesko; Wagner, Markus; Kreimeyer, Matthias; Eisenbart, Boris
Open Access
Barriers to the use of artificial intelligence in the product development : a survey of dimensions involved
(2023) Müller, Benedikt; Roth, Daniel; Kreimeyer, Matthias
Open Access
Challenges of using augmented reality to support an efficient and error-free assembly in complex variant environments
(2023) Dausch, Valesko; Roth, Daniel; Kreimeyer, Matthias; Bohr, Sebastian
Open Access
Classification of methodologies for design for circular economy based on a literature study
(2023) Stölzle, Merlin Gerald; Roth, Daniel; Kreimeyer, Matthias
Open Access
Decision support for defining adaptive façade design goals in the early design phase
(2023) Voigt, Michael P.; Roth, Daniel; Kreimeyer, Matthias
Compared to conventional façades, adaptive façades (AFs) can adjust their properties in response to environmental changes and user requirements. Often performed through the integration of actuators, sensors, and control units, this provides benefits such as reduced energy consumption in buildings but also increases the complexity of the façade design. To efficiently deal with the higher complexity, this article aims to provide suitable decision support for the early design phase, identify suitable design goals, and compare these to previously implemented Afs (make-or-buy decision). There is particular focus on the AF-specific characteristics, as these are new compared to well-known conventional façades. To systematically develop decision support, requirements are identified in expert interviews and the literature, and the current state of the art is evaluated against these. Research gaps found in current methods are addressed in this article, and continuous decision support is developed for the early design phase of an integrated design process. This support includes a checklist with AF-specific characteristics and a digitally implemented database of AFs. Based on the requirements, an evaluation is performed for both methods: this includes the comparison of the results to three ongoing AF projects and the assignment of 40 case studies to the database.
Open Access
Designing actuation concepts for adaptive slabs with integrated fluidic actuators using influence matrices
(2022) Nitzlader, Markus; Steffen, Simon; Bosch, Matthias J.; Binz, Hansgeorg; Kreimeyer, Matthias; Blandini, Lucio
Previous work has shown that floor slabs make up most of the material mass of building structures and are typically made of reinforced concrete. Considering the associated resource consumption and greenhouse gas emissions, new approaches are needed in order to reduce the built environment’s impact on the ongoing climate crisis. Various studies have demonstrated that adaptive building structures offer a potential solution for reducing material resource consumption and associated emissions. Adaptive structures have the ability to improve load-bearing performance by specifically reacting to external loads. This work applies the concept of adaptive structures to reinforced concrete slabs through the integration of fluidic actuators into the cross-section. The optimal integration of actuators in reinforced concrete slabs is a challenging interdisciplinary design problem that involves many parameters. In this work, actuation influence matrices are extended to slabs and used as an analysis and evaluation tool for deriving actuation concepts for adaptive slabs with integrated fluidic actuators. To define requirements for the actuator concept, a new procedure for the selection of actuation modes, actuator placement and the computation of actuation forces is developed. This method can also be employed to compute the required number of active elements for a given load case. The new method is highlighted in a case study of a 2 m × 2 m floor.
Open Access
Function integration in additive manufacturing: a review of approaches
(2023) Tüzün, Gregory-Jamie; Roth, Daniel; Kreimeyer, Matthias
Open Access
Implementation of a design guideline for aluminum foam sandwich based on industrial demands
(2023) Hommel, Patrick; Roth, Daniel; Binz, Hansgeorg; Kreimeyer, Matthias
Open Access
An investigation of increased power transmission capabilities of elastic-plastic-designed press-fit connections using a detachable joining device
(2024) Falter, Jan; Herburger, Daniel; Binz, Hansgeorg; Kreimeyer, Matthias
Drive systems are an important part of general mechanical engineering, automotive engineering, and various other fields, with shaft–hub connections being an important part of such systems. Decisive aspects in the development of such systems today are, for example, high transmittable forces and torques, low masses, and the cheapest possible production of components. A possibly threefold increase in the force and torque transmission capacity can be achieved by using press-fit connections with an elastic-plastic design as opposed to regular elastically designed alternatives. An elastic-plastic design of the press-fit connection is achieved by using a large interference. A large transition geometry on the shaft (which replaces the conventional chamfer) is required to join such an interference. The material and space requirements have a negative impact on lightweight applications and limited building spaces. Therefore, the objective of the research presented in this paper is to design and analyze a detachable joining device that substitutes this geometry. A simulation study was conducted to determine the geometry of the joining device that improves the stress state and consequently the force and torque transmission capacity of the connection. Moreover, the influence of manufacturing tolerances of the joining device and the shaft, corresponding risks, and measures to mitigate them are analyzed using finite element analysis. The results show that large transition radii, enabled by using a joining device, lead to a homogenous distribution of plastic strain and pressure in the press-fit connection, even for large interferences ξ and soft hub materials like wrought aluminum alloys. The influence of manufacturing tolerances on the stress state was quantified, leading to design guidelines that minimize the risk of, e.g., the front face collision of a shaft and hub, while maximizing the power transmission of the connection. The results show the capability of a detachable joining device to enable elastic–plastic press–fit connections and the corresponding threefold increase in the force and torque transmission capacity in lightweight applications, resulting from the substitution of the installation space consuming and mass increasing the transition geometry of the shaft.
Open Access
Investigation of pressure chambers for integrated fluidic actuators in adaptive slabs
(2024) Bosch, Matthias J.; Nitzlader, Markus; Bachmann, Matthias; Binz, Hansgeorg; Blandini, Lucio; Kreimeyer, Matthias
A high proportion of the CO 2 emissions worldwide are caused by the construction sector or are associated with buildings. Every part of the industry needs to reduce its share of emissions, so the building sector must also do its part. One possible solution for achieving this reduction in the field of load-bearing structures is the use of adaptive structures. This research focuses on adaptive slab structures, which require specific actuators to be integrated into the system. Conventional actuators are not suitable due to the prevailing requirements, namely installation space and performance. For this investigation, the actuator is divided into different functional components. A rough description of the requirements for one component, namely the energy converter, is given. Different concepts are developed, tested, and compared with numerical results. Due to the requirements, the concepts are limited to hydraulics. The authors then present a comparison of different simulation strategies for the energy converter. Overall, this paper provides a new contribution to the design of energy converter concepts for integrated hydraulic actuators in slabs, along with experimental verification of the working principle of the energy converters to meet the requirements. A simplified numerical model is proposed to estimate the behavior of the energy converter during the early design phase.
Open Access
Requirements for a smart product-service system development framework
(2023) Paliyenko, Yevgeni; Heinz, Daniel; Schiller, Christian; Tüzün, Gregory-Jamie; Roth, Daniel; Kreimeyer, Matthias
Open Access
Stuttgarter Symposium für Produktentwicklung SSP 2023 : Tagungsband zur Konferenz, Stuttgart, 25. Mai 2023
(Stuttgart : Fraunhofer IAO, 2023) Hölzle, Katharina; Kreimeyer, Matthias; Roth, Daniel; Maier, Thomas; Riedel, Oliver
Mit dem Ziel, nationale und internationale Fachleute unterschiedlicher Disziplinen der Produktentwicklung aus Industrie und Wissenschaft in den Dialog zu bringen, organisiert der Verein zur Förderung produktionstechnischer Forschung e.V. und das Fraunhofer IAO gemeinsam mit dem Institut für Konstruktionstechnik und Technisches Design IKTD, dem Institut für Maschinenelemente IMA und dem Institut für Arbeitswissenschaft und Technologiemanagement IAT der Universität Stuttgart das Stuttgarter Symposium für Produktentwicklung SSP. Am 25. Mai 2023 findet das SSP zum siebten Mal statt. Die Konferenz bietet Wissenschaftlern eine Plattform zur Präsentation und Diskussion ihrer neuesten Forschungsergebnisse im Bereich der Produktentwicklung und fördert so den interdisziplinären Wissenstransfer. Aufgerufen waren in der SSP 2021 Beiträge aus folgenden Kategorien: • Adaptive Bedienung für automatisiertes Fahren • Advanced Systems Engineering (ASE) / Model-Based Systems Engineering • Agile Produktentwicklung • Design-Technik-Konvergenz • Digital Engineering • Innovations- und Technologiemanagement • Konstruktionsmethodiken • Leichtbau in der Produktentwicklung • Nachhaltige Produktentwicklung • Nutzerzentriertes Design •Produktkomplexität • Wissensmanagement in der Produktentwicklung • Zuverlässige Produktentwicklung Im Plenum und vier Tracks mit jeweils drei Sessions werden 41 Beiträge präsentiert. Der Abstract der Keynote sowie die 40 Volltexte mit deutschen und englischen Abstracts sind in diesem Band zusammengefasst.
Open Access
Stuttgarter Symposium für Produktentwicklung SSP 2025 : Tagungsband zur Konferenz, Stuttgart, 22. Mai 2025
(Stuttgart : Fraunhofer IAO, 2025) Hölzle, Katharina; Kreimeyer, Matthias; Roth, Daniel; Maier, Thomas; Riedel, Oliver
Mit dem Ziel, nationale und internationale Fachleute unterschiedlicher Disziplinen der Produktentwicklung aus Industrie und Wissenschaft in den Dialog zu bringen, organisiert der Verein zur Förderung produktionstechnischer Forschung e.V. und das Fraunhofer IAO gemeinsam mit dem Institut für Konstruktionstechnik und Technisches Design IKTD, dem Institut für Maschinenelemente IMA und dem Institut für Arbeitswissenschaft und Technologiemanagement IAT der Universität Stuttgart das Stuttgarter Symposium für Produktentwicklung SSP. Am 22. Mai 2025 findet das SSP zum achten Mal statt. Die Konferenz bietet Wissenschaftlern eine Plattform zur Präsentation und Diskussion ihrer neuesten Forschungsergebnisse im Bereich der Produktentwicklung und fördert so den interdisziplinären Wissenstransfer. Aufgerufen waren in der SSP 2025 Beiträge aus folgenden Kategorien: • Adaptive Bedienung für automatisiertes Fahren • Advanced Systems Engineering (ASE) / Model-Based Systems Engineering • Agile Produktentwicklung • Design-Technik-Konvergenz • Digital Engineering • Innovations- und Technologiemanagement • Konstruktionsmethodiken • Leichtbau in der Produktentwicklung • Nachhaltige Produktentwicklung • Nutzerzentriertes Design •Produktkomplexität • Wissensmanagement in der Produktentwicklung • Zuverlässige Produktentwicklung Im Plenum und vier Tracks mit jeweils drei Sessions werden 38 Beiträge präsentiert. Der Abstract der Keynote sowie die 38 Volltexte mit deutschen und englischen Abstracts sind in diesem Band zusammengefasst.
Open Access
Systematic classification of adaptive façades : preparing a database
(2023) Voigt, Michael P.; Roth, Daniel; Kreimeyer, Matthias