Hybrid modelling by machine learning corrections of analytical model predictions towards high-fidelity simulation solutions

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

Within the fields of materials mechanics, the consideration of physical laws in machine learning predictions besides the use of data can enable low prediction errors and robustness as opposed to predictions only based on data. On the one hand, exclusive utilization of fundamental physical relationships might show significant deviations in their predictions compared to reality, due to simplifications and assumptions. On the other hand, using only data and neglecting wellestablished physical laws can create the need for unreasonably large data sets that are required to exhibit low bias and are usually expensive to collect. However, fundamental but simplified physics in combination with a corrective model that compensates for possible deviations, e.g., to experimental data, can lead to physics-based predictions with low prediction errors, also despite scarce data. In this article, it is demonstrated that a hybrid model approach consisting of a physics-based model that is corrected via an artificial neural network represents an efficient prediction tool as opposed to a purely data-driven model. In particular, a semi-analytical model serves as an efficient low-fidelity model with noticeable prediction errors outside its calibration domain. An artificial neural network is used to correct the semi-analytical solution towards a desired reference solution provided by highfidelity finite element simulations, while the efficiency of the semi-analytical model is maintained and the applicability range enhanced. We utilize residual stresses that are induced by laser shock peening as a use-case example. In addition, it is shown that non-unique relationships between model inputs and outputs lead to high prediction errors and the identification of salient input features via dimensionality analysis is highly beneficial to achieve low prediction errors. In a generalization task, predictions are also outside the process parameter space of the training region while remaining in the trained range of corrections. The corrective model predictions show substantially smaller errors than purely data-driven model predictions, which illustrates one of the benefits of the hybrid modelling approach. Ultimately, when the amount of samples in the data set is reduced, the generalization of the physics-related corrective model outperforms the purely data-driven model, which also demonstrates efficient applicability of the proposed hybrid modelling approach to problems where data is scarce.

OriginalspracheEnglisch
Aufsatznummer1883
ZeitschriftMaterials
Jahrgang14
Ausgabenummer8
Anzahl der Seiten19
ISSN1996-1944
DOIs
PublikationsstatusErschienen - 10.04.2021

Dokumente

DOI

Zuletzt angesehen

Forschende

  1. Kerstin Fedder

Publikationen

  1. Getting down to specifics on RCA [Resource Consumption Accounting]
  2. Entangled – But How?
  3. Modeling the distribution of white spruce (Picea glauca) for Alaska with high accuracy: an open access role-model for predicting tree species in last remaining wilderness areas
  4. Embedding Evidence on Conservation Interventions Within a Context of Multilevel Governance
  5. Learning linear classifiers sensitive to example dependent and noisy costs
  6. Tree diversity increases robustness of multi-trophic interactions
  7. Exploring the efficacy of metabarcoding and non-target screening for detecting treated wastewater
  8. A robust model predictive control using a feedforward structure for a hybrid hydraulic piezo actuator in camless internal combustion engines
  9. Differences of Four Work-Related Behavior and Experience Patterns in Work Ability and Other Work-Related Perceptions in a Finance Company
  10. Conceptual understanding of complex components and Nyquist-Shannon sampling theorem
  11. Explaining the (Non-) Adoption of Advanced Data Analytics in Auditing
  12. THE PARALLAX OF INDIVIDUATION
  13. Employing a Novel Metaheuristic Algorithm to Optimize an LSTM Model
  14. Indicator model of students' writing skills (IMOSS)
  15. Ecologies of Making
  16. Water quantity and quality dynamics of the THC - Tuyamuyun hydroengineering complex - and implications for reservoir operation
  17. A Graphic Language for Business Application Systems to Improve Communication Concerning Requirements Specification with the User
  18. Creating spaces for cooperation
  19. A Soft Alignment Model for Bug Deduplication
  20. Comparative study on the dehydrogenation properties of TiCl4-doped LiAlH4 using different doping techniques
  21. Failed mobility transition in an ideal setting and implications for building a green city
  22. Framework for empirical research on science teaching and learning
  23. Robustness of coherent sets computations
  24. A blueprint for mapping and modelling ecosystem services
  25. Archives
  26. Short and long-term dominance of negative information in shaping public energy perceptions
  27. The role of learning strategies for performance in mathematics courses for engineers
  28. Deeper Insights into Different Consumer Perceptions of CSR Communication
  29. Analysis of a phase‐field finite element implementation for precipitation
  30. How difficult is the adaptation of POS taggers?
  31. Digital Seriality as Structure and Process