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Your search keyword '"Sadowski, Tomasz"' showing total 9 results
Start Over Author "Sadowski, Tomasz" Topic finite element analysis
9 results on '"Sadowski, Tomasz"'

6. Linear and non-linear dynamic analyses of sandwich panels with face sheet-tocore debonding

Author

Burlayenko, V. N. and Sadowski, Tomasz

Subjects
sandwich panels, debonding, finite element analysis, modal dynamics, forced oscillations
Abstract

А survey of recent developments in the dynamic analysis of sandwich panels with face sheet-to-core debonding is presented. The finite element method within the ABAQUSTM code is utilized. The emphasis is directed to the procedures used to elaborate linear and non-linear models and to predict dynamic response of the sandwich panels. Recently developed models are presented, which can be applied for structural health monitoring algorithms of real-scale sandwich panels. First, various popular theories of intact sandwich panels are briefly mentioned and a model is proposed to effectively analyse the modal dynamics of debonded and damaged (due to impact) sandwich panels. The influence of debonding size, form and location, and number of such damage on the modal characteristics of sandwich panels are shown. For nonlinear analysis, models based on implicit and explicit time integration schemes are presented and dynamic response gained with those models are discussed. Finally, questions related to debonding progression at the face sheet-core interface when dynamic loading continues with time are briefly highlighted.

Published
2020

7. Influence of skin/core debonding on free vibration behavior of foam and honeycomb cored sandwich plates

Author

Burlayenko, Vyacheslav. N. and Sadowski, Tomasz

Subjects
free vibration, sandwich plates, debonding, finite element analysis
Abstract

The dynamic behavior of partially debonded at the skin/core interface sandwich plates with flexible cores is studied. The commercial finite element code ABAQUS is used to calculate natural frequencies and mode shapes of the debonded sandwich plates. The effects of debonding size, debonding location and number of debonding on the modal parameters of damaged sandwich plates with various boundary conditions are investigated. The results of dynamic analysis illustrated that can be useful for analyzing practical problems related to the non-destructive damage detection of debonded sandwich plates.

Published
2008

8. Spot Welding–Adhesive Joints: Modelling and Testing.

Author

Sadowski, Tomasz, Kneć, Marcin, and Golewski, Przemysław

Subjects
*AEROSPACE industry research, *FINITE element method, *TECHNOLOGICAL innovations, *STRESS concentration, *MATERIAL fatigue, *WELDING
Abstract

Modelling and testing of hybrid joints obtained by combination of two simple techniques,i.e.,by application of spot welding and adhesive, is reported. The joints were subjected to uniaxial tension. The experiments were performed for: 1) a pure joining of the parts by spot welding and 2) spot welding–adhesive joining of the structural elements. A new experimental method was elaborated with application of two digital image correlation (DIC) systems. The method allowed for online monitoring of the deformation process of the joined elements with complex shapes. Modelling of the hybrid joints response to mechanical loading was performed by ABAQUS code. Damage process in the adhesive layer was taken into account. The obtained results lead to the conclusion that the strengthening of joints by the application of adhesive significantly improves static strength and energy absorption. The visible degradation process of the adhesive layer which started prior to the maximum value of force carrying the hybrid joint was obtained. [ABSTRACT FROM PUBLISHER]

Published
2014
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9. Modelling of microcracks initiation and evolution along interfaces of the WC/Co composite by the finite element method.

Author

Dębski, Hubert and Sadowski, Tomasz

Subjects
*MICROCRACKS, *CRACK initiation (Fracture mechanics), *COMPOSITE materials, *FINITE element method, *MICROSTRUCTURE, *CRACK propagation (Fracture mechanics)
Abstract

Highlights: [•] The XFEM and the R&T techniques were exploited in damage analysis of the WC/Co microstructure. [•] Damage propagation analysis was performed with 2-D numerical models. [•] The Gurson–Tvergaard material porosity was used for the description of the Co interface. [•] Traction–Separation and Ductile Damage Criterions were used to model the WC/Co composite damage process. [Copyright &y& Elsevier]

Published
2014
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