Dynamic analysis of composite plate with multiple delaminations based on higher-order zigzag theory

Oh, Jinho; Cho, Maenghyo; Kim, Jun-Sik

doi:10.1016/j.ijsolstr.2005.06.006

Cited by 72 publications

(30 citation statements)

References 41 publications

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“…Virtual spring elements were inserted between the delaminated layers to allow the deformation of the layers without penetration. Oh et al [9] developed a four-node finite element based on the efficient higher-order zigzag plate theory of laminated composite plates with multiple delaminations to refine the prediction of frequencies, mode shape and time response. Unilateral contact constraints by Lagrange multiplier method are applied in the time response analysis to prevent penetration violation at the delamination interfaces.…”

Section: Introductionmentioning

confidence: 99%

Dynamic instability analysis of rotating delaminated tapered composite plates subjected to periodic in-plane loading

Arumugam

Rajamohan

2016

Arch Appl Mech

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In this study, the dynamic instability analysis of rotating delaminated thickness tapered composite plates with different taper configurations subjected to periodic in-plane loads is performed. The governing differential equations of motion of the various configurations of a rotating thickness mid-plane delaminated tapered laminated composite plate are presented in the finite element formulation based on classical laminated plate theory including various rotational effects. The finite element formulation developed for the dynamic instability analysis of rotating delaminated tapered composite plate is validated by comparing the parametric exciting frequencies evaluated using the present finite element method (FEM) with those presented in available literature and comparing the natural frequencies of rotating delaminated tapered composite plate evaluated using the present FEM with experimentally measured results. Various parametric studies are also performed to study the effect of taper configurations, rotational speed, delamination length, delamination location and in-plane periodic loads on stability of the structure. It was seen that the influences of rotating speed on the principal DIR spectra among taper configurations and uniform plate are significant and the normalized width of principal and second instability regions of parametric resonance frequencies increase in the order of uniform, TC3, TC2 and TC1 for all the rotating speeds.

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Section: Introductionmentioning

confidence: 99%

Dynamic instability analysis of rotating delaminated tapered composite plates subjected to periodic in-plane loading

Arumugam

Rajamohan

2016

Arch Appl Mech

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“…Cho and Kim [25,26] developed a unified approach to modeling the two-dimensional imperfections and delaminations present in laminated composite plates and shells. Oh et al [27] have proposed a model for the analysis of the dynamic response of delaminated composite plates based on a higher-order zigzag theory. Other approaches based on higher-order zig-zag approximations for modeling interlayer slips resulting from the delamination related damage have been explored in [28][29][30][31][32][33].…”

Section: -) Introductionmentioning

confidence: 99%

Two-noded zigzag beam element accounting for shear effects based on an extended Euler Bernoulli theory

Capua

Oñate

2015

Composite Structures

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We present a new 2-noded beam element based on the refined zigzag theory and the classical EulerBernoulli beam theory for the static analysis of composite laminate and sandwich beams. The proposed element is able to take into account distortion effects due to shear elastic strains and can predict delamination. The element has four degrees of freedom per node. A 1 C cubic Hermite interpolation is used for the vertical deflection while a 0 C linear interpolation is employed for the other kinematics variables. The stiffness matrix and the load vector are calculated in explicit form using exact integration. The element is free from shear locking as confirmed with numerical tests on a wide range of the slenderness ratios. Numerical results show the ability of the EEBZ2 element to reproduce accurately the vertical deflection along the beam length and complex zigzag distributions of the axial displacement and the stresses across the thickness. Delamination effects are modeled by incorporating of an additional zigzag function corresponding to the kinematics of a zero thickness layer where delamination occurs. An example showing the capability of the new EEBZ2 element for accurately reproducing delamination effects is presented.

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“…Therefore, Oh et al modeled the delamination process of sandwich sheets. 11 Liu and Wang developed a numerical model for calculating the spring-back effect in a sandwich. 12 Moreover, properties such as the acoustic behavior and damping of metal-based sandwich materials with a polymer core of different thicknesses has been modeled based on the theory of sandwich plates using the finite-element method, for example by Three-layered sandwich material for lightweight applications Palkowski and Carradò Chen et al 13 and Engel and Buhl.…”

Section: Introductionmentioning

confidence: 99%

Three-layered sandwich material for lightweight applications

Palkowski

Carradò

2014

Emerging Materials Research

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Multifunctionality and the demand for improving the properties of construction materials make it necessary to leave the approach of monomaterials and combine them to fabricate composite structures, such as combinations of metals with polymers. This article focuses on metal-polymer-metal sandwich sheets. Bonding is improved using adhesive layers. These sandwich sheets are designed for their mechanical and thermal properties, working capacity and so on. A short background of composites structures, to be used in the automotive and aerospace industry, is presented. Moreover, fabricating processes and forming methods for composites are briefly introduced. Finally, a study of 316L/polypropylene/316L sandwich sheets, manufactured in a roll-bonding process and heating press process, is introduced. Their mechanical behavior and formability by deep drawing are discussed. IntroductionAspects of environmental protection and recycling are becoming more and more important in our society and are the driving forces for development, especially in the area of aviation as well as automotive and transport. To fulfill the rising demands, ecological standards for new products can be a solution -for example, taking factors such as saving resources, sustainability and recycling as well as functionality, design and others into consideration. Novel materials with new and improved functions engender a high interest in the industrial community.Monomaterials of metals, ceramics or polymers cannot fulfill all the technological requirements for a variety of industrial applications. The activities in physics and chemistry as well as engineering are leading to materials with superior properties -often by combining monomaterials to hybrids. 1 Some industrially applied composite materials can be classified as follows: Sandwich composites are understood to be multilayered structures. By using these combinations, it is possible to 'tailor' the properties of special components by choosing the accurate combination of monomaterials, thus providing functionality to fulfill the qualified demands on modern materials and structures. 7 As defined by Zenkert, 8 they are a combination of materials with minimum one of higher strength to create a composite with selected lightweight properties. They are represented, principally, by fundamental patterns of two skin sheets, which are thin but of high strength and stiffness. These skins include a relatively thick, low-density core. These sandwich composites are widely used for engineering applications because of the extremely high stiffness-to-mass ratio.Sandwich materials can be formed with numerous skin (e.g. steel, aluminum alloy sheets etc.) and core materials (polymer foils or fiber-reinforced plastics (FRP), with polymer layers being homogenous or structured), and they are often bonded together using an adhesive agent. Because of being quite simple to manufacture using lamination, roll-bonding or heat-press joining processes as sketched in Figure 1, they exhibit a great potential for future use. 9,10 Moreove...

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Dynamic analysis of composite plate with multiple delaminations based on higher-order zigzag theory

Cited by 72 publications

References 41 publications

Dynamic instability analysis of rotating delaminated tapered composite plates subjected to periodic in-plane loading

Dynamic instability analysis of rotating delaminated tapered composite plates subjected to periodic in-plane loading

Two-noded zigzag beam element accounting for shear effects based on an extended Euler Bernoulli theory

Three-layered sandwich material for lightweight applications

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