Stress distribution around a hole in orthotropic and isotropic plates under bolt loading

ISSN： 1568-5519

Source： Advanced Composite Materials, Vol.2, Iss.3, 1992-01, pp. : 221-231

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Abstract

Stress distribution along the hole contour of orthotropic and isotropic infinite plates under bolt loading is analyzed within the scope of orthotropic elasticity. It is assumed that no frictional force acts between the rigid bolt and the hole surface of the plate. Taking the contact limit angle as a parameter, load distribution along the contact portion of the hole contour is represented by a Fourier series containing undetermined coefficients, which are determined later from the geometrical condition of rigid contact. Numerical analyses are conducted for CFRP angle-ply, cross-ply, and quasi-isotropic laminates. Predicted stress distributions along the hole contour are compared with available experimental results. The present analysis predicts that tangential stress component (tensile) becomes maximum at the position where the tangent of the hole coincides with the direction of reinforcing fiber for angle-ply and cross-ply laminates, whereas it locates at the contact limit for quasi-isotropic laminate.