Hardening-softening behaviour of tubular cantilever beams

Yu, Tongxi; Reid, S.R.; Wang, B.

doi:10.1016/0020-7403(93)90053-w

Cited by 20 publications

(9 citation statements)

References 9 publications

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“…is is consistent with the observation by Yu et al [3], Prinja and Chitkara [6], and Reid et al [4] for thin-walled empty pipes.…”

Section: Experimental Observationssupporting

confidence: 93%

“…According to the comprehensive experimentally observed phenomenon, the bending deformation occurs uniformly in the pure bend section of the pipe at the initial stage of load application, and the pipe deformation mainly manifests as section transitions from circular to at. When the load increases, the global bending deformation almost stops and plasticity rapidly develops on a shorter section in the interior of the pure curved section, forming a kink, which was observed in pipe whipping experiments observed by Yu et al [3] and Reid et al [4,5]. en, the bending moment value rapidly decreases followed by the pipe losing its bending capacity.…”

Section: Experimental Observationsmentioning

confidence: 79%

“…is phenomenon, first discovered by Brazier, is often referred to as the Brazier effect [3]. In contrast to the well-known elasticplastic hardening phenomenon, this process is always called softening behavior [4].…”

Section: Introductionmentioning

confidence: 99%

“…e second deformation mode of a tube under bending involves buckling on the compressed side of the tube due to excessive compressive stress. e experimental studies of Yu et al [3], Reid et al [4,5], and Prinja and Chitkara [6] have recorded the softening behavior of a cantilever pipe beam during the deformation process due to individual sections exceeding the critical curvature. Based on the moment-curvature relationship obtained by four-point bending experiments for the empty pipe and the large deflection governing equation based on a generalized constitutive equation, Reid et al [5] used a 2D model of in-plane deformation and a 3D model including out-of-plane deformation to numerically simulate the elastic-plastic dynamic response of a cantilevered empty pipe.…”

Section: Introductionmentioning

confidence: 99%

“…When a cantilever pipe is subjected to dynamic plastic bending, local buckling or cross-sectional shape distortion usually occurs at the xed boundary [3][4][5]. e inertial e ect will signi cantly a ect the response process.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Characteristic Transient Response of a Pressurized Cantilever Pipe Subjected to Transverse Impact at Its Tip

Liu

Yang

2019

Shock and Vibration

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This paper describes an experimental study on the pure bending mechanical behavior of a pressurized pipe and adoption of a measured moment-curvature relationship under different working conditions in numerical simulations for transient pipe-whip prediction. To describe the effects of pipe contents and internal pressure, the governing equations were derived based on large deformation theory. Bending moment and axial force were uncoupled in the constitutive equation, and an experiment-based relationship between moment and curvature was adopted. The numerical simulations show that the present model can simulate the mechanical processes of elasticity, plastic hardening, and softening behavior in the initial, middle, and late stages of whole response, respectively. In addition, it was shown that kinks may occur at several positions along an empty cantilever pipe due to the collapse of sections under intense dynamic loading. However, this behavior did not occur for the full pressurized pipe, indicating that the contents and internal pressure are able to effectively impede the partial flattening of the pipe section, improving its critical curvature and changing its plastic dynamic response behavior.

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“…is is consistent with the observation by Yu et al [3], Prinja and Chitkara [6], and Reid et al [4] for thin-walled empty pipes.…”

Section: Experimental Observationssupporting

confidence: 93%