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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 92 (2017) Issue 10 ISSN Online: 0005-6650

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Rimantas Belevicius, Algirdas Juozapaitis, Dainius Rusakevicius, Ieva Misiunaite, Saulius Valentinavicius Optimal Schemes of Underslung Girder Foot Bridges for Different Spans and Deck Types S. 427-434

„… varies depending on the number of sections chosen by the optimization algorithm and may reach 57 for a …” „… actually multimodal character of the problem. Stochastic evolutionary optimization algorithms (EA) that …” „… do not require the sensitivity information were used for optimization. Stochastic algorithms do not …”

doi.org/10.37544/0005-6650-2017-10

Jeanette Hamiga - Increasing Output in Transfer Lines through Adaptive Buffer Operation

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Jeanette Hamiga

Increasing Output in Transfer Lines through Adaptive Buffer Operation

Series: Fördertechnik/Logistik

Volume 58 2016

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Method design for increased output in assembly S. 39-63

„… during a shift. Optimization Single and Multi-objective Optimization: Evolutionary Algorithm …” „… optimization concept is presented. Concluding the search methodology, the Evolutionary Algorithms used, are …” „… Evolutionary Algorithms used for search of solutions As the variables in the proposed optimization task are …”

References S. 118-132

„… Approach to the Traveling Salesman Problem: An Efficient Simulation Algorithm. Journal of Optimization …” „… , Kalyanmoy. 2004. Multi-Objective Optimization using Evolutionary Algorithms. Chichester: Wiley. Deb …” „… Genetic Algorithm for Multi-objective Optimization: NSGA- II. In Proceedings of the 6th International …”

Buffer management in manufacturing systems S. 7-38

„… dedicated to a special class of optimization methods, the Evolutionary Algorithms. The methods presented …” „… the shorter path in the end. In the ant colony optimization algorithms this principle is transferred …” „… optimization process, is fulfilled.31F Genetic Algorithms Genetic Algorithms as introduced by Holland 98 are …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… – Multi-Objective-Optimization – Evolution Strategies – Automotive Production – Manufacturing System – Assembly – Buffer …” „… simulation-based optimization method is proposed. This method is split into the evaluative methodology, here …” „… simulation, and the generative technique of evolution strategies, solving the multi-objective optimization …”

Introduction S. 1-6

„… method is the operation of buffers and simulation-based optimization. With the goal of improving buffer …” „… optimization is envisioned to be developed. 1.1 Background and motivation of research German automotive …” „… . Most studies on system optimization deal with allocation and sizing of buffers, whereas the filling of …”

Summary and outlook S. 97-99

„… status. Due to the chosen optimization algorithms, the Evolution Strategies, computation time is fast …” „… optimization method to find optimized parameter settings for adaptive buffer operation was developed. In …” „… within the system should be filled simulation-based optimization was applied. As this optimization method …”

Application of method S. 64-96

„… algorithm did not find the global optimum. 4.2.3 Multi-objective optimization The first striking result …” „… problem. In the proposed simulation-based optimization method algorithms considering multiple-objectives …” „… operation and simulationbased optimization have been described. In this chapter the developed method is …”

doi.org/10.51202/9783186058133

VDI Wissensforum GmbH - International Conference on Gears 2022

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

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L. Bo Integrated optimization of structural and control parameters for a hybrid electric system S. 927-934

„… . The reinforcement learning algorithm is used to solve the optimization results in the iterative …” „… variables are discretizedSelect the starting point, and use the optimization algorithm to search the optimal …” „… Fig. 3: Parameter optimization process 3.2 Control strategy based on dynamic programming algorithm …”

P. Tenberge, R. Uelpenich, P. Dong, R. He Very fast tooth root optimization – general tool geometry for much smaller tooth root stresses S. 457-468

„… the optimization algorithm and are based on the initial variants a), c) and e). The optimizations can …” „… . With this experience, we could speed up our optimization algorithm again a lot. This result …” „… root optimization => General tool geometry for much smaller tooth root stressesProf. Dr.-Ing. P …”

P. Rodel, R. Spieler, M. Indenbirken, T. Nuisl Holistic friction optimization of transmissions – a significant contribution for sustainability S. 731-744

„… algorithms allow to perform optimizations for user-defined objective functions with varying constraints, e.g …” „… Holistic friction optimization of transmissions A significant contribution for sustainability …” „… are faced with new challenges. The topic friction optimization gains higher importance during …”

N. Hessinger, M. Braunstingl, H. Bansal Advanced use of DOE in gear geometry optimization S. 281-286

„… optimization algorithms provides a powerful tool which helps save time and cost in the improvement and …” „… Advanced Use of DOE in Gear Geometry Optimization Quality and robustness improvement of …” „… NVH-behavior, gear durability and efficiency through hypoid gear macro-geometry optimization N. Hessinger, M …”

C. Schonke, T. Magdy, K. Daubach, W. Kassem, M. Oehler, O. Koch Simulation of high torque density gearbox noise excitation S. 837-848

„… , Technische Universitat Kaiserslautern, Germany Abstract Market requirements for cost optimization of …” „… influence. Furthermore, gear bodies with more complex geometries (e.g. for weight optimization) are …” „… technologies, such as efficient contact calculation algorithms and selective degree of freedom reductions. The …”

E. Lamaj, J. Blomeke, F. Rudolph, J. Hermes A comprehensive, fully parametrized calculation model for improved helical-hypoid gearbox efficiency S. 825-836

„… . 2. Conventional Gearbox Optimization Depending on the complexity of physical phenomena under …” „… nonlinear behavior of the gear units is essential for reliable systematic optimizations. A bottom-up V&V …” „… Digital Twin Model Optimizations An automated toolchain based on input and output variables and an …”

T.-T. Mac, D. Iba, Y. Matsushita, S. Mukai, T. Inoue, A. Fukushima, N. Miura, T. Iizuka, A. Masuda, I. Moriwaki Application of genetic algorithms for parameters identification in a developing smart gear system S. 239-252

„… Application of Genetic Algorithms for parameters identification in a developing smart gear system …” „… Algorithms (GA) for identifying the parameters of the smart gear in a developing wireless gear health …” „… optimization process. Once the value of MSE becomes minimum, the best fitting of these two data is obtained …”

T. Konig, M. Kley, F. Wagner, M. Liebschner Enhanced damage classification on transmissions by generating synthetic data with Generative Adversarial Networks (GAN) S. 227-238

„… machine learning algorithms. The generation of a sufficient amount of data per condition class is relevant …” „… to ensure training stability and accuracy of the applied algorithms. But especially in early …” „… and time-consuming in practice. However, for the implementation of machine learning algorithms to …”

M. Furst, J. Gotz, M. Otto, K. Stahl Automation of gearbox design S. 787-802

„… practice. Design optimization usually is achieved through an iterative and time-consuming process of …” „… analyzing and tuning towards an optimization objective. In this paper a time-saving, automated and …” „… mixed integer nonlinear optimization problem results from the interdependence between these distinct …”

D. Park, A. Rezayat, Y. Gwen Gear design optimization for multi-mesh and multi-power flow transmissions under a broad torque range incorporated with multibody simulations S. 849-862

„… Gear design optimization for multi-mesh and multi-power flow transmissions under a broad torque …” „… aspect. Therefore, the development of a seamless gear design optimization software tool is crucial to …” „… scenario is translated into a multi-objective optimization in a multibody simulation environment with all …”

X. Zheng, Y. Hu FE analysis and predication on the traveling wave – resonance of aero-gears S. 915-926

„… on the commercial FEA software LS-DYNA, which has superiority in explicit algorithm and impact …” „… as targets in optimization. (a) (b) Fig. 2.1: Alignment and …” „… Inputting the above data into Kriging model and combined with NSGA-II algorithm, the optimized geometry of …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… aculty of Electrics and Informatics Aalen, Aalen University, GermanyApplication of genetic algorithms …” „… (Now: MAN Truck & Bus AG)Advanced use of DOE in gear geometry optimization …” „… geometry optimizationParametric study of hypocycloidal involute gears …”

F. Eigner, S. Heinrich, M. Berger An approach on contact analysis for micro geometry optimization of the gear unit HypoGear S. 943-950

„… An approach on contact analysis for micro geometry optimization of the gear unit HypoGear Florian …” „… algorithm is used to speed up the dimensioning of the special gear design by avoiding a time-consuming …” „… and not all points of the tooth in the calculation, an acceleration of the algorithm is achieved …”

F. Thurner Light into the black box: using AI software to identify unknown mechanisms of action and resolve acoustic/NVH problems – practical example of a passenger car powertrain S. 779-786

„… with a patented algorithm that, in conjunction with the right methodology, uncovers unknown mechanisms …” „… patented mathematical algorithm [1], valid prediction models can be generated even for prototypes with few …” „… an automatic algorithm. A sensitivity analysis is followed by a group/family formation of influence …”

F. Muller, S. Schumann, B. Schlecht Innovative tooth contact analysis with non-uniform rational b-spline surfaces S. 171-184

„… major focus in the development of gear boxes is the optimization of the gears. The aim is to increase …” „… ]. In contrast, ZaKo3D uses an interpolation algorithm based on Bézier surfaces or a triangulated mesh …” „… . Both approaches make it necessary to determine the contact dis-tances with numerical algorithms, such …”

J.-A. Meis, M. Walkowiak Influence of case hardness depth on tooth interior fatigue fracture S. 863-874

„… profile can be generated. Within a subsequently following algorithm, the line of action is determined …” „… analysis are supplied. Optimizations of the tooth root are also in the scope of this method. Fig. 3 …” „… optimizations The simplified assumptions for the residual stresses might also be only valid for symmetric gears …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… simulation model, the churning losses of the experiment are correctly reproduced. A post-processing algorithm …” „… loss optimization as well. Using this tool in a cloud-based environment leverages the potential of SPH …” „… : Development of a Mesh-Handling Algorithm to Reduce the CFD Simulation Time. In: Advances in Tribology 2016 …”

doi.org/10.51202/9783181023891

Xiao Zhao - Reactor network synthesis with guaranteed robust performance

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Xiao Zhao

Reactor network synthesis with guaranteed robust performance

Series: Verfahrenstechnik

Volume 952 2017

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Bibliography S. 158-176

„… . Lewis, and M. Overton. A robust gradient sampling algorithm for nonsmooth, nonconvex optimization. SIAM …” „… composite adjoints for the Hessian of the Lagrangian in shooting algorithms for dynamic optimization. SIAM …” „… Engineering, 24(9-10):2125–2141, 2000. [95] S. Lee and I. Grossmann. A global optimization algorithm for …”

Solution methods S. 60-106

„… state-of-the-art algorithms for solving convex MINLP and Tawarmalani and Sahinidis [171] review global optimization …” „… ) qualify, because both of them can be solved to global optimality by using local optimization algorithms …” „… branched further. B&B algorithms are suitable for optimization problems, in which there are not too many …”

Summary and outlook S. 133-140

„… optimization problems, because no existing solution algorithm or software can be applied readily. After …” „… optimality condition of EVO problems. Due to this issue, the existing non-smooth optimization algorithms can …” „… design degrees of freedom, which are determined by solving a single optimization problem. The method has …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… , Mixed-integer nonlinear programming, Normal vector approach, Robust optimization In this work a systematic …” „… closed-loop is determined by solving a single optimization problem. Bibliographische Information der Deutschen …” „… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 5 Solution methods 60 5.1 Discrete-continuous optimization …”

doi.org/10.51202/9783186952035

Daniel Marolt - SWARM: A Novel Methodology for Integrated Circuit Layout Automation Based on Principles of Self-organization

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Daniel Marolt

SWARM: A Novel Methodology for Integrated Circuit Layout Automation Based on Principles of Self-organization

Series: Rechnerunterstützte Verfahren

Volume 475 2020

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Clarification of the Task S. 1-3

„… Scientific Challenge In Chapter 3 of [1], the working principles of optimization algorithms and procedural …” „… generators have been illustrated. An optimization algorithm works by iterating through a repetitive loop of …” „… space. Due to the problem complexity, optimization algorithms usually focus on one specific design task …”

Towards a Holistic Design Flow on Module Level S. 214-219

„… optimization algorithms and procedural generators. From today’s perspective, SWARM pioneers an entirely new …” „… Bottom-up With Top-down Table 5.1: Major characteristics of optimization algorithms, procedural generators …” „… , and SWARM. Automation Optimization Procedural SWARM Strategy Algorithm Generator Methodology Circum …”

Summary and Outlook S. 220-224

„… optimization algorithms with the layout quality of procedural generators. For circuits of such magnitude …” „… involves many diverse and concurrent functional constraints (design restrictions and optimization goals …” „… For that purpose, this thesis attempts to combine two basic automation strategies: optimization …”

Titelei/Inhaltsverzeichnis S. I-VIII

„… Automation – Optimization Algorithms – Procedural Generators – Multi-Agent Systems After more than three …” „… assets of optimization algorithms, thus paving the way for a new automation paradigm called bottom-up …” „… . . . . . . . . . . . . . . . . 152 3.5.1 Comparison with Optimization Algorithms . . . . . . . . . . . . . . . 152 3.5.2 Comparison …”

Implementation and Results S. 166-213

„… a stochastic optimization algorithm which executes millions of perturbations to find a solution …” „… optimization algorithm, for which a larger solution space metaphorically corresponds to a bigger haystack …” „… optimization algorithms that are able to perform both placement and routing, that can explicitly consider all …”

The Methodology: Self-organized Wiring and Arrangement of Responsive Modules S. 29-165

„… principles of optimization algorithms and procedural generators (see Figure 3.1 and Figure 3.13 in [1 …” „… Population-based Optimization Algorithm Particles JADE [151] 2001 Java Agent Development Environment Agents SWARM …” „… presented methodology neither implements a purely optimization-based top-down approach nor a purely …”

An Interdisciplinary Approach – Preliminary Considerations S. 4-28

„… discussed in Section 3.2 of [1], optimization algorithms and procedural generators follow two fundamentally …” „… case of an optimization algorithm, one central optimization engine takes care of every design decision …” „… optimization: it served as the blueprint for the Ant Colony Optimization algorithm (again, see Section 3.1.3 in …”

References S. 231-250

„… / Ronald Boellaard / Marc A. Kropholler / Adriaan A. Lammertsma, “Optimization Algorithms and Weighting …” „… Stützle, “Ant Colony Optimization: Artificial Ants as a Computational Intelligence Technique”, IEEE …” „… ] Mohammad Tehranipoor, “CAD Algorithms – Placement”, online, Nov. 2008, URL …”

doi.org/10.51202/9783186475206

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