Analytical and experimental analysis of stress concentration in notched multilayered composites with finite outer boundaries |
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Authors: | W Hufenbach B Grüber R Gottwald M Lepper B Zhou |
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Institution: | 1.Institut für Leichtbau und Kunststofftechnik (ILK),Technische Universit?t Dresden,Dresden,Germany |
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Abstract: | A solution method for stress concentration problems of fibre- and textile-reinforced multilayered composites with account
of the influence of a circular or elliptical cut-out and of the finite outer boundary of a composite plate is presented. The
method is based on complex-valued displacement functions and conformal mappings in combination with the boundary collocation
and least squares methods. This allows a layer-by-layer calculation of full stress, strain, and displacement fields in a generally
multilayered anisotropic plate. To verify the calculation model, extensive experimental studies have been carried out. For
all the combinations of multilayered GF/PP plates, laminate lay-ups, and notch and specimen dimensions investigated so far,
a very good agreement between the analytical calculations and experimental results is found to exist. |
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