The pull-out and shear resistance of the stainless steel sleeve anchor with fish fins depends on the yield strength and ductility of the material itself. The yield strength is the critical stress value when the material begins to undergo plastic deformation, which directly determines the initial load-bearing limit of the stainless steel fish fin sleeve anchor when subjected to pull-out or shear loads. A higher yield strength means that the anchor can resist a greater pull-out force without permanent deformation when subjected to axial tension; when encountering horizontal shear force, the strong yield strength enables the anchor body to effectively prevent the cutting effect of the rock or concrete matrix on it, significantly improving the overall shear resistance of the anchoring system.
Ductility is related to plastic deformation capacity, that is, the amount of plastic deformation that the material can withstand before breaking after reaching the yield point. Excellent ductility gives the stainless steel sleeve anchor with fish fins a key "toughness reserve". Under pulling conditions, even if the local stress exceeds the yield point, the ductility allows the anchor body to undergo controlled plastic flow rather than brittle fracture, and through stress redistribution, the load is more evenly transmitted to a wider range of anchoring areas, ultimately greatly improving the ultimate pull-out bearing capacity.
When facing dynamic shear loads such as earthquakes and impacts, high ductility helps the stainless steel sleeve anchor with fish fins absorb energy through plastic deformation, delay crack initiation and instability propagation, prevent catastrophic brittle failure of the anchor connection, and ensure the ductility and safety redundancy of the structure. Therefore, choosing stainless steel with both high yield strength and excellent ductility to manufacture stainless steel fish fin sleeve anchors is the key to balancing its instantaneous bearing capacity and long-term deformation resistance and fatigue failure risks, especially for permanent anchoring projects with strict requirements for earthquake resistance and durability.