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Analysis of Fracture Behavior of a Lifting Lug based on Strength Calculations and Finite Element Analysis
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DOI：10.3795/KSME-A.2026.50.3.167.png)
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Abstract
En 中文
This study investigates the structural failure mechanism of a lifting lug, fractured during actual industrial operations, through strength calculations and finite element analysis (FEA). Strength evaluation based on ASME BTH-1 and AISC standards revealed that the yield strength was exceeded at both the side and upper regions of the lug hole, with particularly high local stresses at the hole's side surface. FEA results showed that the highest stress occurred at the contact interface between the hole and the pin; however, as this stress was below the tensile strength, fatigue failure was considered the more likely cause. Fatigue analysis indicated a predicted service life of approximately 37 cycles, far below the target life. These findings suggest that the failure was primarily because of the loss of durability from repeated lifting, and not sudden overloads.
Keywords:
Lifting Lug
Fracture
Finite Element Analysis
Fatigue
Strength Calculation
Journal
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IF:
0.2
Papers:
87
Citations:
308
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Cited Papers