Polymer Mechanics

, Volume 14, Issue 5, pp 681–691 | Cite as

Strength and deformation properties of fiberglass-plastic in the flat stressed state as a function of reinforcement structure

  • Z. T. Upitis
  • R. B. Rikards


Limiting strength values have been ascertained in the flat stressed state as a function of reinforcement structure. The change in each strength surface tensor component as a function of reinforcement intensity has been approximated by the piecewise-linear approximation method. A strength condition has been derived which can be used in optimization problems. The problem of the optimum reinforcement structure of a composite at various ratios of the stresses σ11, σ22, and σ12 has been examined. By using the strength condition, one can predict strength values for structures which appear in the class of materials in question with various reinforcement intensities. The procedure developed can be used in designing composite materials.


Stressed State Composite Material Approximation Method Reinforcement Structure Tensor Component 
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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • Z. T. Upitis
  • R. B. Rikards

There are no affiliations available

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