Behavior of slip-critical bolted connections subjected to impulsive loads

Sanborn, Marc J.; Stewart, Lauren K.

doi:10.1016/j.ijimpeng.2020.103501

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…If the looseness effects of the beam-upright connectors are neglected, replacing the distributed force q 2 with q in Equations ( 10) and ( 11) leads to the mathematical expressions of the bending moment M mid developed at the middle of the beam and of the maximum deflection v max , given by Equation ( 14) and Equation (15), respectively.…”

Section: Theoretical Approachmentioning

confidence: 99%

“…The bending moment developed at the middle of the beam and maximum deflection of the beam are computed by using the Equation (12) and Equation ( 13), respectively, considering the looseness effects occurred at the connectors with tabs located at both beam ends. The results are compared with the ones obtained by using Equations ( 14) and (15), which are valid when the looseness effects that occurred at tab connections are neglected.…”

Section: Theoretical Approachmentioning

confidence: 99%

“…The slip effect depends on the clearance between the bold diameter and the hole. In case of the bolted connections, the slip effect happens after a certain load is reached, as shown in Figure 2 for moment-rotation curve recorded for joint with pre-tensioned bolts [13,15,16]. In literature, there are a lot of scientific works which investigated the behavior of the bolted connections under static or impulsive loads, considering the clearance between bolt and hole [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…In case of the bolted connections, the slip effect happens after a certain load is reached, as shown in Figure 2 for moment-rotation curve recorded for joint with pre-tensioned bolts [13,15,16]. In literature, there are a lot of scientific works which investigated the behavior of the bolted connections under static or impulsive loads, considering the clearance between bolt and hole [14,15]. By considering the finite element analysis of the models of beam-column connections with bolts, subjected to cyclic loading, Gharebaghi and Hosseini [14] showed that the increasing of the bolt-hole clearance and the decreasing of the pretention force in bolt lead to the reduction of the flexural strength of the bolt connection while the rotation angle increases.…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Looseness of the Beam End Connection Used for the Pallet Racking Storage Systems, on the Mechanical Behavior of the Bearing Beams

Dumbrava

Cerbu

2022

Materials

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The worldwide use of pallet racking storage systems leads to the necessity for research regarding the effects of the clearance between the metallic tabs of the connector and upright slots (looseness effect) on the performance of load-bearing beams. Firstly, the looseness angle and the rotational stiffness were experimentally obtained for three types of beam-to-upright connections. A theoretical approach is used to investigate the magnitude of the looseness effects that occurred on the performances of the bearing beam of the pallet storage systems in terms of the bending moment developed at the midpoint of the beam and maximum deflection. Calculation corrections were evaluated for the connections involved in the experimental part, for the case which considers the looseness effects with respect to the case which does not consider the looseness effect. In order to evaluate the effects of the parameters of the connections on calculus corrections, the theoretical model was used for other types of beam-to-upright connections. It is shown that the maximum corrections are 2.99% and 5.16% for the bending moment developed at the midpoint of the beam and for the maximum deflection, respectively. It is proved that the connector type affects the size of the correction.

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Section: Theoretical Approachmentioning

confidence: 99%

Section: Theoretical Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the Looseness of the Beam End Connection Used for the Pallet Racking Storage Systems, on the Mechanical Behavior of the Bearing Beams

Dumbrava

Cerbu

2022

Materials

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show abstract

“…Verification of test parameters with T 0 =75 kgf, M t =0.25 kgf•m (N=1047 kgf), and a friction coefficient μ=1.0 lead to the theoretical demand. The value of μ was assumed to be the double of the static coefficient between steel-steel, which is about 0.5 (Sanborn & Stewart, 2020), due to the use of sandpaper tom that increases this coefficient. The above leads to: = 0.53°, 0 =3214 kgf•m, k 1 =3.44•10 5 kgf•m, k 2 =9.69•10 3 kgf, 0 =138 kgf•m, and the maximum moment M=3804 kgf•m.…”

Section: Experimental Programmentioning

confidence: 99%