Effect of Load Direction on Failure of Out-of-Plane Composite Joints

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Abstract:

The mechanical properties of fabric composite π joints under stretch-bending load are studied using the progressive damage method. The failure mode of fillers is evaluated by the modified maximum stress failure criterion due to their structural particularity, while other parts of the joint by the maximum stress failure criterion. Compared with the results of joints under simple tensile load, the numerical simulation result of the joint under stretch-bending loads with varied directions reveals that the flexion can cause significant reduction in the initial and ultimate failure strength although it has little effect on the structure stiffness before initial failure. In addition, the base laminate and the skin are more easily damaged under stretch-bending loads.

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934-937

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March 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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