Abstract: Worn surface morphologies of the tested 710 mm² ACCC strands were observed by scanning electron microscopy, and the influence of the stringing block diameter on strands damage and mechanisms were analyzed. Considering the contact and friction between strands, the ACCC full-scaled model was built and nonlinear dynamics finite element analysis of ACCC after passing the stringing block was carried out. The test results show that the plastic deformation and wear appeared on the strand surface after test. Adhesive wear proceeded from the initial wear region on the strand surface, and strands damage was improved with the increase of the stringing block diameter. The numerical analysis indicates that PEEQ and frictional dissipation, which were started on the bending stage of strands, decreased with the increase of the stringing block diameter. The simulation result was in good agreement with the test result. Based on the above results, the influence of the friction coefficient between strands on the strands damage was studied, and the strands damage was improved with the decrease of the friction coefficients. Synthetically consideration, the strands damage was acceptable when the stringing block diameter was 30 times of the diameter of ACCC.