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Experimental study on T-stubs connected by thread-fixed one-side bolts under cyclic load
Abstract Experimental studies on behavior of T-stubs connected using thread-fixed one-side bolts (TFOSBs) under monotonic and cyclic loads were presented. Three failure modes, which were the complete flange yielding failure, the bolt failure, and the flange yielding accompanied by hole thread failure, were observed in both tests. Effects of the cyclic load on the behavior of T-stubs were discussed from aspects of the deformation, the load transfer mechanism, the stiffness degradation and the tension yield strength. Compared to the monotonic tests, the cyclic load caused stiffness degradation and made threads on the bolt hole wall become more vulnerable to fail. In addition, comparisons showed that available design methods applied to predict the behavior of T-stubs under monotonic load also were applicable to predict that under cyclic load.
Highlights T-stubs connected using thread-fixed one-side bolts (TFOSBs) were tested under cyclic load. Tension yield strength and failure mode under difference load types were presented. Strength and stiffness were reduced under cyclic load compared to that under monotonic load. Failure mode could be accurately predicted by the current design methods. Tension yield strength predicted by current design methods were on safety side.
Experimental study on T-stubs connected by thread-fixed one-side bolts under cyclic load
Abstract Experimental studies on behavior of T-stubs connected using thread-fixed one-side bolts (TFOSBs) under monotonic and cyclic loads were presented. Three failure modes, which were the complete flange yielding failure, the bolt failure, and the flange yielding accompanied by hole thread failure, were observed in both tests. Effects of the cyclic load on the behavior of T-stubs were discussed from aspects of the deformation, the load transfer mechanism, the stiffness degradation and the tension yield strength. Compared to the monotonic tests, the cyclic load caused stiffness degradation and made threads on the bolt hole wall become more vulnerable to fail. In addition, comparisons showed that available design methods applied to predict the behavior of T-stubs under monotonic load also were applicable to predict that under cyclic load.
Highlights T-stubs connected using thread-fixed one-side bolts (TFOSBs) were tested under cyclic load. Tension yield strength and failure mode under difference load types were presented. Strength and stiffness were reduced under cyclic load compared to that under monotonic load. Failure mode could be accurately predicted by the current design methods. Tension yield strength predicted by current design methods were on safety side.
Experimental study on T-stubs connected by thread-fixed one-side bolts under cyclic load
Wulan, Tuoya (author) / Ma, Qijie (author) / Liu, Zhenhua (author) / Liu, Mei (author) / Song, Jie (author) / Cai, Junfeng (author) / Wang, Peijun (author)
2020-03-17
Article (Journal)
Electronic Resource
English