A Combined Strain Element in Static, Frequency and Buckling Analyses of Laminated Composite Plates and Shells

Abstract

This paper deals with numerical analyses of laminated composite plate and shell structures using a new four-node quadrilateral flat shell element, namely SQ4C, based on the first-order shear deformation theory (FSDT) and a combined strain strategy. The main notion of the combined strain strategy is based on the combination of the membrane strain and shear strain related to tying points as well as bending strain with respect to cell-based smoothed finite element method. Many desirable characteristics and the enforcement of the SQ4C element are verified and proved through various numerical examples in static, frequency and buckling analyses of laminated composite plate and shell structures. Numerical results and comparison with other reference solutions suggest that the present element is accuracy, efficiency and removal of shear and membrane locking.

Study of mechanical behavior by fatigue of a cracked plate repaired by different composite patches

“…This is due to the stress transfer toward the composite patch throughout the adhesive layer [12][13]. In addition, in [14] many desirable characteristics and the enforcement of the SQ4C element were verified and proved through various numerical examples in static, frequency, and buckling analyses of laminated composite plates and shell structures. This study is focused on an aluminum alloy plate, presenting a central crack, subjected to tension on its upper and internal parts by cyclic loadings, to investigate the fatigue behavior of this plate.…”

“…The NASGRO model, used in the prediction of the fatigue cracking propagation rate and implemented in several fatigue calculation codes, was developed and modified by Maierhofer et al [14]. The NASGRO model predicts the cracking rate for the 3D domains, and it is in the form:…”

Four-node quadrilateral C 0-element based on cell-based smoothed strains strategy and third-order shear deformation theory for functionally graded carbon nanotube reinforced composite plates

“…Beside developing and manufacturing novel advanced engineering materials, many theories have been introduced into analyses from thin to thick plates such as the classical plate theory (CPT), the first-order shear deformation theory (FSDT), the higher-order shear deformation theory (HSDT), the layer-wise theory (LWT) and variable kinematics models. The FSDT is often applied because of its simplicity and low computational cost [8][9][10]. But we may easily recognize that the third-order shear deformation plate theories are the accurate theories and effective due to the quadratic variation of the transverse shear strains and stresses along the thickness of plate as well as the shear locking free [11].…”

An Efficient Approach into Finite Element Method for Lateral Buckling Analysis of Fiber-Metal Laminates Tapered I-Beams

“…Ghasemi and Mohandes [18,19] and Ghasemi et al [20] presented some useful works about analysis fiber-metal laminate (FML) cylindrical shells under different boundary conditions. Within the context of first-order shear deformation theory, a novel finite element technique was recently introduced by Ton-That and Nguyen-Van [21] to investigate the mechanical behavior of laminated plate and shell.…”