Sourav Chandra, M.Eng.

DAAD Promotionsstipendiat

Stochastische Dynamikanalyse einer Composite-Struktur unter Wärmeeinfluss

Application of the light-weight composite structure is nowadays increasing as a principal structural component in the aerospace and automobile industries. Due to some specific advantages like, high strength-to-weight ratio, better fatigue performance, and thermal stability, composite structures are used to manufacture some critical component of the structure, and are sometimes exposed to thermal environment. Generally, composite plate is lightly damped structure; however, damping increases with the increment of the temperature. Moreover, elastic and damping properties of the composite plate are temperature dependent and are significantly uncertain quantity.

The stochastic dynamic behavior of the composite plate in the uncertain thermal environment mathematically presented by stochastic finite element (FE) formulation. A viscoelastic damping model implements to evaluate the damping behavior of the composite structure in a thermal environment. This formulation extends to evaluate the stochastic damped dynamic response in uncertain thermal environment.

Hence, this research investigates the performance of the damping to mitigate the vibration to composite structure in the thermal environment, and corresponding stochastic dynamic behavior in uncertain thermal environment. The Deutscher Akademischer Austauschdienst (DAAD) financially supports this PhD project.

Forschungsschwerpunkte:

  • Finite-Elemente-Analyse von Composite-Strukturen
  • Unsicherheitsquantifizierung
  • Bayesische Inferenzmethode

Publikationen

2022

  • Chandra, S.; Maeder, M.; Sepahvand, K.; Matsagar, V.A.; Marburg, S.: Damping analysis of stiffened laminated composite plates in thermal environment. Composite Structures 300, 2022, 116163 mehr… BibTeX Volltext ( DOI )
  • Chandra, S.; Saini, K.; Matsagar, V.; Marburg, S.: Reliability Assessment of Laminated Composite Plates under Impulsive Loads. Book of Abstracts - 5th National Conference on Reliability and Safety (NCRS-2022), 2022 mehr… BibTeX
  • Chandra, S.; Sepahvand, K.; Matsagar, V.A.; Marburg, S.: Dynamic response of stiffened laminated composite plate in thermal environment. Composite Structures 300, 2022, 116049 mehr… BibTeX Volltext ( DOI )
  • Maeder, Marcus; Chandra, Sourav; Marburg, Steffen: Identification of Temperature Dependent Material Properties in Composite Plates Utilizing Experimental Vibration Data. In: Material Modeling and Structural Mechanics. Springer International Publishing, 2022 mehr… BibTeX Volltext ( DOI )

2020

  • Chandra, Sourav; Sepahvand, Kheirollah; Matsagar, Vasant; Marburg, Steffen: Stochastic Modal Damping Analysis of Stiffened Laminated Composite Plate. In: Lecture Notes in Civil Engineering. Springer Singapore, 2020 mehr… BibTeX Volltext ( DOI )

2019

  • Chandra, S.; Sepahvand, K.; Geweth, C.; Saati, F.; Marburg, S.: STOCHASTIC NON-PARAMETRIC IDENTIFICATION IN COMPOSITE STRUCTURES USING EXPERIMENTAL MODAL DATA. Proceedings of the 3rd International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2019), Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019Crete, Greece mehr… BibTeX Volltext ( DOI )
  • Chandra, S.; Sepahvand, K.; Geweth, Ch. A.; Saati, F.; Marburg, S.: Bayesian Inference to Damping Identification of Fiber-Reinforced Composites from Experimental Modal Data. Proceedings of the 23rd International Congress on Acoustics, integrating 4th EAA Euroregio , DEGA, 2019Aachen mehr… BibTeX Volltext (mediaTUM)
  • Chandra, S.; Sepahvand, K.; Marburg, S.: Stochastic vibro-acoustic analysis in the uncertain thermal environment. Fortschritte der Akustik - DAGA : 45. Jahrestagung für Akustik, 18.-21. März, DEGA e.V., 2019Rostock mehr… BibTeX Volltext (mediaTUM)
  • Chandra, S.; Sepahvand, K.; Matsagar, V.A.; Marburg, S.: Stochastic dynamic analysis of composite plate with random temperature increment. Composite Structures 226, 2019, 111159 mehr… BibTeX Volltext ( DOI ) Volltext (mediaTUM)

2018

  • Chandra, S.; Sepahvand, K.; Marburg, S.: Bayesian Inference Method to Identify Random Parameters. Fortschritte der Akustik - DAGA 2018 : 44. Jahrestagung für Akustik, 19.-22. März 2018, München, DEGA e.V., 2018München mehr… BibTeX Volltext (mediaTUM)