07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik
Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/8
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Item 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, SebastianItem Open Access Function integration in additive manufacturing: a review of approaches(2023) Tüzün, Gregory-Jamie; Roth, Daniel; Kreimeyer, MatthiasItem Open Access Classification of methodologies for design for circular economy based on a literature study(2023) Stölzle, Merlin Gerald; Roth, Daniel; Kreimeyer, MatthiasItem 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, MatthiasDrive 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.Item Open Access Implementation of a design guideline for aluminum foam sandwich based on industrial demands(2023) Hommel, Patrick; Roth, Daniel; Binz, Hansgeorg; Kreimeyer, MatthiasItem Open Access Barriers to the use of artificial intelligence in the product development : a survey of dimensions involved(2023) Müller, Benedikt; Roth, Daniel; Kreimeyer, MatthiasItem Open Access Requirements for a smart product-service system development framework(2023) Paliyenko, Yevgeni; Heinz, Daniel; Schiller, Christian; Tüzün, Gregory-Jamie; Roth, Daniel; Kreimeyer, MatthiasItem 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, BorisItem Open Access Systematic classification of adaptive façades : preparing a database(2023) Voigt, Michael P.; Roth, Daniel; Kreimeyer, MatthiasItem 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, MatthiasA 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.