Chinese Journal of Theoretical and Applied Mechani ›› 2007, Vol. 23 ›› Issue (6): 822-828.DOI: 10.6052/0459-1879-2007-6-2006-592

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Analysis of interlaminar stress in composite laminated beam-plate with interfacial damage

Yiming Fu Sheng Li   

  • Received:2006-12-01 Revised:1900-01-01 Online:2007-11-18 Published:2007-11-18

Abstract: Based on the general six-degrees-of-freedom plate theory and the accurate stress analysis, using the variational principle and the equivalent strain theory in damage mechanics, the three-dimensional non-linear equilibrium differential equations for the interlaminar stresses of laminated plates with the damage effect of the intra-layers and the interlaminar interface are derived in the framework of the theory of elasticity. With a simply supported laminated beam-plate with damage as an example, an analytical solution is presented by using finite difference method to obtain the interlaminar stresses.

Key words: geometric nonlinearity, accurate stress analysis, interfacial damage, interlaminar stress