STRENGTH ANALYSIS OF COMPOSITE CABLES
AbstractCARBON FIBER REINFORCED POLYMER (CFRP) CABLES, DUE TO THEIR OUTSTANDING PERFORMANCE IN TERMS OF SPECIFIC STIFFNESS AND STRENGTH, ARE USUALLY FOUND IN CIVIL CONSTRUCTION APPLICATIONS AND, MORE RECENTLY, IN THE OIL & GAS SECTOR. HOWEVER, EXPERIMENTAL DATA AND THEORETICAL SOLUTIONS FOR THESE CABLES ARE VERY LIMITED. ON THE CONTRARY, SEVERAL THEORETICAL AND NUMERICAL APPROACHES ARE AVAILABLE FOR ISOTROPIC CABLES (METALLIC WIRE ROPES), SOME OF THEM WITH SEVERE SIMPLIFICATIONS, NONETHELESS SHOWING GOOD AGREEMENT WITH EXPERIMENTAL DATA. IN THIS STUDY, EXPERIMENTAL TENSILE RESULTS FOR 1×7 CRFP CABLES WERE COMPARED TO A SIMPLIFIED ANALYTICAL MODEL (ASSUMED TRANSVERSALLY ISOTROPIC) AND TO A 3D FINITE ELEMENT MODEL INCORPORATING THE EXPERIMENTAL UNCERTAINTY IN IMPORTANT INPUT PARAMETERS: LONGITUDINAL ELASTIC MODULUS, POISSON’S RATIO, STATIC FRICTION COEFFICIENT AND ULTIMATE TENSILE STRAIN. THE AVERAGE EXPERIMENTAL BREAKING LOAD OF THE CABLE WAS 190.25 KN (COEFFICIENT OF VARIATION OF 1.74%) AND THE AGREEMENT WITH THE NUMERICAL MODEL PREDICTIONS WERE GOOD, WITH AN AVERAGE-VALUE DEVIATION OF –1.15%, WHICH IS LOWER THAN THE EXPERIMENTAL VARIATIONS. THE SIMPLIFIED ANALYTICAL MODEL YIELDED A DISCREPANCY ABOVE 10%, INDICATING THAT IT NEEDS FURTHER REFINEMENT ALTHOUGH MUCH LESS TIME CONSUMING THAN THE NUMERICAL MODEL. THESE CONCLUSIONS WERE CORROBORATED BY STATISTICAL ANALYSES (I.E. KRUSKAL–WALLIS AND MANN-WHITNEY).
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).