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http://dx.doi.org/10.12989/csm.2022.11.6.543

Delamination analysis of multilayered beams with non-linear stress relaxation behavior  

Victor I., Rizov (Department of Technical Mechanics, University of Architecture, Civil Engineering and Geodesy)
Publication Information
Coupled systems mechanics / v.11, no.6, 2022 , pp. 543-556 More about this Journal
Abstract
Delamination of multilayered inhomogeneous beam that exhibits non-linear relaxation behavior is analyzed in the present paper. The layers are inhomogeneous in the thickness direction. The dealamination crack is located symmetrically with respect to the mid-span. The relaxation is treated by applying a non-linear stress-straintime constitutive relation. The material properties which are involved in the constitutive relation are distributed continuously along the thickness direction of the layer. The delamination is analyzed by applying the J-integral approach. A time-dependent solution to the J-integral that accounts for the non-linear relaxation behavior is derived. The delamination is studied also in terms of the time-dependent strain energy release rate. The balance of the energy is analyzed in order to obtain a non-linear time-dependent solution to the strain energy release rate. The fact that the strain energy release rate is identical with the J-integral value proves the correctness of the non-linear solutions derived in the present paper. The variation of the J-integral value with time due to the non-linear relaxation behavior is evaluated by applying the solution derived.
Keywords
delamination; inhomogeneous material; multilayered structure; non-linear relaxation; time-dependent behavior;
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Times Cited By KSCI : 4  (Citation Analysis)
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