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Nikola Aulig - Generic Topology Optimization Based on Local State Features

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Nikola Aulig

Generic Topology Optimization Based on Local State Features

Reihe: Rechnerunterstützte Verfahren

Band 468 2017

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Topology Optimization by Predicting Sensitivities S. 48-83

„… Predicting Sensitivities design improvement becomes smaller than a defined threshold: ΔF < ΔFmin. A simple …” „… predict sensitivities of the design variables, which should in many cases lead to improvement of the …” „… reflects the actual sensitivities of the design variables, can be obtained by sampling a subset of the …”

Introduction S. 1-7

„… physical understanding Pre-defined adjoint sensitivities/heuristics Specific problems only (very efficient …” „… 1 1 Introduction Human engineers or designers usually judge their designs with respect to numerous …” „… all necessary restrictions. They typically change design parameters in an iterative and intuitive …”

Conclusions S. 150-154

„… previous knowledge. Depending on the relation of the LSFs to the design variables’ sensitivities, the …” „… topology optimization problems resides in the design freedom naturally reflected by an accordingly high …” „… representations are limited to small problems, geometric representations can provide a balance between design …”

Titelei/Inhaltsverzeichnis

„… – Local State Features – Evolutionary Computation – Design Sensitivities – Prediction – Machine Learning …” „… , ISSN 0178-9473, ¤ 76,00/VDI-Mitgliederpreis ¤ 68,40. Keywords: Topology Optimization – Concept Design …” „… – Vehicle Crashworthiness The work at hand addresses engineers, designers and scientists who face the …”

Studies on the Minimum Compliance Problem S. 84-120

„… Sensitivities demonstrates its feasibility by reproduction of a known reference solution in empirical studies …” „… for our studies. Design space and boundary conditions are shown in Sec. 2.2.2 in Fig. 5.1. The …” „… component of the load vector l at the index of the centre node along the right edge of the design space. The …”

Fundamentals S. 8-28

„… End: Final Design No Yes Sensitivities Convergence? Load Figure 2.4: Computational flow for …” „… optimization are illustrated in Fig. 2.1. Sizing optimization refers to optimization of design parameters on a …” „… . In shape optimization, the design variables describe the form and location of the boundary of a …”

Theory S. 155-160

„… 155 A Theory A.1 Adjoint Sensitivities As an example for adjoint sensitivity analysis, let us …” „… u+K ∂u ∂ρi − ∂l ∂ρi ) . Since the load is independent of the design, i.e. ∂l∂ρi = 0, we rearrange: ∂c …” „… analysis, we follow an analogous derivation as for the compliance sensitivities. The sensitivity of the …”

Topology Optimization of Crashworthiness Objectives S. 121-149

„… design process. Therefore, and due to the difficulties it poses to existing topology optimization …” „… of the virtual multidisciplinary vehicle design process in today’s automotive industry [57]. Crash …” „… simulations have become an important step of the virtual vehicle design process. In parallel, there is …”

Bibliography S. 177-202

„… design optimization of structures, machines and materials, pages 3–12. Springer, 2006. [4] Allaire, G …” „… design sensitivity analysis in structural optimization. AIAA journal, 17(9):970–974, 1979. [7] Auger, A …” „… ] Aulig, N. and Olhofer, M. Topology optimization by predicting sensitivities based on local state …”

Structure Representations for Evolutionary Computation S. 29-47

„… . provided an overview on Evolutionary Computation (EC) and structural design, including approaches for …” „… . However, researchers in structural design are often not aware of the available EC methods, while …” „… of the discretized design space is represented by a variable [42, 147]. Today, the literature …”

doi.org/10.51202/9783186468208

Matthias Johannink - Model-based and Experimental Analysis of Transient Electrodialysis Processes

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Matthias Johannink

Model-based and Experimental Analysis of Transient Electrodialysis Processes

Reihe: Verfahrenstechnik

Band 949 2016

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Experimental analysis of electrodialysis process dynamics S. 17-41

„… obtain an estimate of the sensitivities with respect to the geometric spacer design. 2.4.1 Applied …” „… − . 26 2.4 Sensitivities with respect to operational and design parameters Figure 2.9: Measured pro les …” „… experimental sensitivity analysis with respect to operational and design parameters. Sections 2.5 and 2.6 …”

Concluding remarks S. 134-138

„… - and energy-e cient process designs is hampered by the limited insight into the underlying transport …” „… transport mechanisms and the model-based optimization of process designs in industrial applications. As a …” „… characterization of the process behavior. This includes the assessment of the sensitivities with respect to …”

Titelei/Inhaltsverzeichnis

„… 2.4 Sensitivities with respect to operational and design parameters . . . . . . . . . . . 25 2.4.1 …” „… spacer design . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.2.2 Transient electrodialysis …” „… . . . . . . . . . . . . . . . . . . . . . . . 117 6.2.6 Parameter estimation, identi ability analysis and design of experiments . . 118 6.3 …”

doi.org/10.51202/9783186949035

VDI Wissensforum GmbH - SIMVEC – Simulation und Erprobung in der Fahrzeugentwicklung

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VDI Wissensforum GmbH (Hrsg.)

SIMVEC – Simulation und Erprobung in der Fahrzeugentwicklung

Reihe: VDI-Berichte

Band 2333 2018

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E. Papoutsis, M. Hojjat, K.-U. Bletzinger Geometric constraints for node-based shape optimization of car body parts S. 75-92

„… directly for shape optimization since the design variables are automatically generated from the discrete …” „… geometry. In addition to the geometry space, a design control space is defined in which the mathematical …” „… optimization problem is formulated. The mapping between the geometry and design control space is constructed …”

S. Luthardt, L. Fredriksson, V. Leconte, Patrick Lombard, A. Dyer E-Motor Design using Multi-Physics Optimization S. 359-380

„… performed concerning driving design variables, sensitivities and trade-offs between different design …” „… setup, it can deliver significant information of design directions, sensitivities and of the …” „… E-Motor Design using Multi-Physics Optimization Sven Luthardt, Dr. Ing. h.c. F. Porsche AG …”

R. Fuger, M. Hanke An integrated Workflow for the Simulation-Driven Development of Electric Motors and Generators – Design and Optimisation of Electric Drives S. 381-388

„… obtain sensitivities and find optimal designs in a multidimensional space. Persistent simulation …” „… Design and Optimisation of Electric Drives Dr. techn. René Fuger, CADFEM (Austria) GmbH, Wien, Austria …” „… early stage of development and increases the efficiency. Simulation tools are widely used to design and …”

doi.org/10.51202/9783181023334

VDI Wissensforum GmbH - Innovative Antriebe 2018

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VDI Wissensforum GmbH (Hrsg.)

Innovative Antriebe 2018

Reihe: VDI-Berichte

Band 2334 2018

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J. Müller, J. Liebold, C. Danzer From customer requirements to the optimal hybrid powertrain – High-performance hybrid transmission for future plug-in hybrid drives S. 83-92

„… , kombiniert mit einem Elektromotor und einem 4-Gang-Planetengetriebe, basiert. Ein erstes 3D-Design des …” „… . A first 3D-design of the transmission shows that it is possible to pack the electric motor and also …” „… the remaining transmission thanks to its structural position and design in the P2 hybrid at the input …”

doi.org/10.51202/9783181023341

VDI Wissensforum GmbH - PIAE Europe 2023

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VDI Wissensforum GmbH (Hrsg.)

PIAE Europe 2023

Reihe: VDI-Berichte

Band 2418 2023

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S. Sampson, L. Fredriksson, M. Bromberger Design for Sustainability Targeting the Strategic Application of Topology Optimization – Lightweighting of structural parts and subsystems S. 437-450

„… Design for Sustainability Targeting the Strategic Application of Topology Optimization …” „… balanced design considering weight, cost, and performance. Topology optimization will challenge established …” „… designs and provides new opportunities to allow for example a material substitution or to consider …”

doi.org/10.51202/9783181024188

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