Finite Element-Based Stochastic Nonlinear Progressive Failure Response of Piezo-Laminated Composite Plate with Elliptical Cutouts

Abstract

This paper presents the second-order statistics of hygro-thermo-electrically-induced progressive failure in terms of first-ply failure load (FPFL) and last-ply failure load (LPFL) analysis for laminated composite material plate (LCMP) under out of plane mechanical loading with random system properties. Basic governing equation of nonlinear progressive failure analysis is based on shear deformation theory (higher order) with von-Karman nonlinear kinematics using Newton’s Raphson approach through Tsai–Wu failure criteria. The random input variables are assumed as uncorrelated type and are evaluated using second-order perturbation method (SOPT). Laminated composite plate with elliptical cutouts are subjected to uniformly distributed, point and hydrostatic load. The effect of boundary conditions, temperature variation, moisture content and voltage variations by utilizing piezoelectric layer position and various cutout shapes on the mean and corresponding covariance (COV) of FPFL and LPFL load are evaluated. Convergence of numerical analysis is performed, and results are validated with those available in literatures to check the efficiency of present methodology. It is observed that the presence of elliptical hole always causes an increase in the failure load of plates subjected to bending, even further increase for LPFL due to the reduction of stresses.

Experimental investigation on flexural behavior of prefabricated sandwich insulation wall panels with textile reinforced engineered cementitious composites as the wythes after freeze-thaw cycles

“…Chen et al (2022) studied the flexural properties of precast ceramsite-concrete-insulated sandwich panel (PCCISP), and pointed out that increasing the thickness of the inner concrete wythe had a positive impact on the ultimate bearing capacity of the PCCISP, but reducing the thickness of insulation had no significant influence. Lal and Kumar (2019; Lal and Markad, 2021a) performed the nonlinear progressive failure analysis of piezolaminated composite shell panel under mechanical out-of-plane loading in the hygro-thermal environment, and presented the second-order statistics of hygro-thermo-electrically-induced progressive failure for laminated composite material plate (LCMP). Garhwal et al (2022) assessed the flexural properties of EPS sandwich concrete panels under different corrosion levels, and the test results showed that the ultimate flexural bearing capacity and ductility of the structure reduced sharply with the increase of corrosion degrees.…”

Progressive failure analysis of laminated plate containing elliptical cutout

“…The elastic modulus corresponding to the dominant H i index is reduced to zero. Lal and Kumar (2019) obtained first ply failure load (FPFL) and last ply failure load (LPFL) of a piezo laminate plate with an elliptic hole and subjected it to out-of-plane loading and randomness in the system property. Subramanian et al (2017) presented a comparative study on failure analysis of stiffened composite laminate with and without a rectangular hole using ABAQUS software.…”