% Encoding: UTF-8 @COMMENT{BibTeX export based on data in FAU CRIS: https://cris.fau.de/} @COMMENT{For any questions please write to cris-support@fau.de} @article{faucris.241705591, abstract = {Exact Constraint Design is well established in design theory to ensure a robust and predictable system behavior. In practice, however, it is often inevitable to deviate from this basic concept so that parts are constrained several times for rigidity or resilience. In doing so, gaps between mating parts have to be added to ensure assemblability and functionality. Despite the essential impact of gaps on the total product functionality, occurring uncertainties in part positioning are mostly neglected in tolerance analysis. In the context of tolerance-cost optimization, they have not been studied in detail so far.
To overcome this drawback, this article addresses the research question how over-constrained systems with gaps can be considered in tolerance-cost optimization ensuring the identification of both reliable and cost-optimal tolerance values. Based on an initial discussion on the complexity of tolerance analysis of over-constrained systems with gaps, their impact on the results and the efficiency of tolerance-cost optimization are discussed. With the aim to ensure a sufficient model accuracy in time-consuming applications, a framework for tolerance-cost optimization considering assemblies with multiple gap configurations based on surrogate models is presented and applied to a case study of industrial complexity. In doing so, a novel framework for a proper and efficient modelling of systems with gaps in tolerance-cost optimization supporting both researchers and practitioners is presente}, author = {Hallmann, Martin and Schleich, Benjamin and Wartzack, Sandro}, doi = {10.1016/j.procir.2020.05.168}, faupublication = {yes}, journal = {Procedia CIRP}, keywords = {Tolerance-cost optimization; Least-cost tolerance allocation; Over-constrained assembly; Tolerance analysis}, pages = {88-93}, peerreviewed = {Yes}, title = {{How} to consider {Over}-constrained {Assemblies} with {Gaps} in {Tolerance}-{Cost} {Optimization}?}, url = {https://www.archiv.mfk.tf.fau.de?file=pubmfk{\_}5f3e03ea5a237}, volume = {92}, year = {2020} }