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This is the master thesis from Lingxuan Zhou advised by Prof. Yu. In this thesis, free-edge stress analysis of composite laminated structures with arbitrary cross sections is dealt with using mechanics of structure genome (MSG). A cross-sectional analysis specialized from MSG is formulated to solve the free-edge problem of composite laminates with arbitrary cross sections.
An I-beam laminate and a curved beam laminate subjected to extension, bending and twisting are analyzed separately by MSG to study the distributions of interlaminar stresses. The results successfully capture the stress singularity at the free edge and are in excellent agreement with 3D nite element analysis (FEA) results. Moreover, MSG shows significant advantages in efficiency while accuracy is maintained by comparing to 3D FEA results.
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