The Timoshenko beam theory was used to model cracked beams and to calculate the total strain-energy release rate. The root rotations of the beam segments at the crack tip were estimated based on an approximate two-dimensional elasticity solution. By including the strain energy released due to the root rotations of the beams during crack extension, the strain-energy release rate obtained using beam theory agrees very well with the two-dimensional finite element solution. Numerical examples were given for various beam geometries and loading conditions. Comparisons with existing beam models were also given.
Improved method for calculating strain energy release rate based on beam theory
AIAA Journal ; 32 , 1
1994-01-01
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Englisch
Improved Method for Calculating Strain Energy Release Rate Based on Beam Theory
Online Contents | 1994
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