Abstract
The geometric details of variable thickness 3D woven composite plate, which features varying weft yarn cross section shapes and sizes at each layer and resulting diverse warp yarn path orientations, are quite different from the structure in constant thickness plate. A geometric model to handle these variances is presented in this paper which no doubt can also be used in constant thickness plate. Based on the idealized assumptions that the cross section shape of weft yarn is lenticular and warp yarn is rectangular, the inner structure details of variable thickness plate are illustrated in the efficient geometric model with weaving parameters and some measurements as input data. Two 3D woven sample materials are produced to confirm the accuracy of the proposed geometric model. Even though the idealizations in geometric model lead to some over predictions, the model still captures the majority of details in corresponding real sample architectures.
Published Version
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