This paper addresses the phenomenology of strand interaction in biaxial non-em-bedded braided textile structures under uniazial tension.The specific interest in the developent of new braided textile structures is a result of the shortcomings of current rope,belt,and cable performance under large strain controlled conditions.However,this work also holds particular significance in the area of textil composite preforms.In composites forming,the lateral strand compaction mechanism,which drives braid behavior under tension,may be applied to woven fabrics for predicting wrinkling during forming processes.Additionally,manufacturing models produced in this study may be used to predict shape and size limitations of braided compos-ite preforms.Inthis paper,a generalized model is developed fro these structures with the intent of characterizing and predicting mechanical behavior.The method-ology consists of a modular frameworkwhich includes the prediction of manufac-truing parametes.Lateral strand compaction tests were performed to generate constitutive material curves for use in analytical geometric models.Model Model predic-tions correlate well with data generated from braid uniaxial tension tests.Results suggest that lateral strand strain drives braid tensile behavior.
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