NDA@SZTAKI

Antiplane-inplane shear mode delamination between two second-order shear deformable composite plates

Szekrényes, András

Sage Publications

2016

QA Mathematics / matematika

QA74 Analysis / analĂ­zis

TJ Mechanical engineering and machinery / gépészmérnöki tudományok

The second-order laminated plate theory is utilized in this work to analyze orthotropic composite plates with asymmetric delamination. First, a displacement field satisfying the system of exact kinematic conditions is presented by developing a double-plate system in the uncracked plate portion. The basic equations of linear elasticity and Hamilton’s principle are utilized to derive the system of equilibrium and governing equations. As an example, a delaminated simply supported plate is analyzed using Lévy plate formulation and the state-space model by varying the position of the delamination along the plate thickness. The displacements, strains, stresses and the J-integral are calculated by the plate theory solution and compared with those by linear finite-element calculations. The comparison of the numerical and analytical results shows that the second-order plate theory captures very well the mechanical fields. However, if the delamination is separated by only a relatively thin layer from the plate boundary surface, then the second-order plate theory approximates badly the stress resultants and so the mode-II and mode-III J-integrals and thus leads to erroneous results.

magyar

Article

PeerReviewed

info:eu-repo/semantics/article

text

http://real.mtak.hu/26526/1/Szekrenyes_A_MMS_2015.pdf

Szekrényes, András (2016) Antiplane-inplane shear mode delamination between two second-order shear deformable composite plates. Mathematics and Mechanics of Solids. pp. 1-24. ISSN 1081-2865

http://real.mtak.hu/26526/

http://mms.sagepub.com/content/early/2015/05/04/10812865155...

DOI: 10.1177/1081286515581871