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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4269
Title: Calculation of interlaminar shear stresses in laminated shallow shell panel using refined higher order shear deformation theory
Authors: Khandelwal R.P.
Chakrabarti A.
Published in: Composite Structures
Abstract: In general, calculation of inter-laminar shear stresses in laminated shells using 2D finite element models involves cumbersome post processing techniques. This paper presents a simple and efficient method for accurate evaluation of transverse shear stresses in laminated composite shallow shells by using a displacement based C0 2D FE model derived from refined higher order shear deformation theory (RHSDT) and a least square error (LSE) method. The theory satisfies the inter-laminar shear stress continuity conditions at the layer interfaces and zero transverse shear stress conditions at the top and bottom of the plate. The effect of three curvature terms in the strain components of composite shells is also considered by following the Sander's approximations. In order to overcome the problem of C1 continuity of transverse displacement encountered at the time of FE implementation of the present shell theory (RHSDT), the first derivatives of transverse displacement have been replaced by a independent C0 variables. The LSE method is applied at the post-processing stage, after in-plane stresses are calculated by using the present FE model based on RHSDT. Thus the proposed method is quite simple and efficient compared to the usual method of integrating the 3D equilibrium equations for calculation of transverse stresses in laminated composite shells. Accuracy of the method is demonstrated in the numerical examples through comparison of the present results with those obtained from different models based on refined higher order shear deformation theory (RHSDT), higher order shear deformation theory (HSDT), exact analytical and 3D elasticity solutions. ¬© 2015 Elsevier Ltd.
Citation: Composite Structures(2015), 124(): 272-282
URI: https://doi.org/10.1016/j.compstruct.2015.01.025
http://repository.iitr.ac.in/handle/123456789/4269
Issue Date: 2015
Publisher: Elsevier Ltd
Keywords: Composite
Finite element
LSE method
Refined higher order shear deformation theory
Shell
Transverse shear stress
ISSN: 2638223
Author Scopus IDs: 54904097400
7202579052
Author Affiliations: Khandelwal, R.P., Department of Civil Engineering, Indian Institute of Technology, Roorkee, 247 667, India
Chakrabarti, A., Department of Civil Engineering, Indian Institute of Technology, Roorkee, 247 667, India
Funding Details: Financial support obtained for the present work from the Department of Science and Technology SERC, New Delhi, India under the Grant DST-536-CED is gratefully acknowledged.
Corresponding Author: Khandelwal, R.P.; Department of Civil Engineering, Indian Institute of TechnologyIndia
Appears in Collections:Journal Publications [CE]

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