Experimental and numerical study of threaded steel fasteners under combined tension and shear at elevated loading rates

Fransplass, H.; Langseth, Magnus; Hopperstad, Odd Sture

doi:10.1016/j.ijimpeng.2014.08.004

Cited by 23 publications

(4 citation statements)

References 7 publications

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“…Several studies have shown that there are many variables governing the behavior of threaded steel fasteners subjected to tension, shear or combined tension and shear loading conditions (Fransplass et al, 2015). Rumpf and Fisher (1963) studied the behavior and performance of individual A325 high-strength bolts under direct tension and torqued tension, Wallaert and Fisher (1964) determined the behavior of single high-strength bolts under static shear loadings.…”

Section: Resultsmentioning

confidence: 99%

“…The models were developed with solid elements, the efforts between the parts were transmitted using contact elements, however the thread geometry of the bolts was not considered. Moreover, Fransplass et al (2015) investigated the behavior of threaded steel fasteners subjected to combined tension and shear loading at elevated loading rates, also using three-dimensional finite element model, but in this case, the thread geometry was simulated with high levels of detail. This numerical simulation captured the overall physical behavior of the threaded assembly, yet the values of ultimate load and initial elastic stiffness for all the load cases investigated were higher than the experimental results obtained in Fransplass et al (2015) research.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of bolted connections

Vilela

Carvalho

Filho

2018

Lat. Am. j. solids struct.

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This article presents the modeling of a complete bolted connection based on a model with one bolt connecting two or three plates. Initially, the behavior of this model with one bolt is analyzed by comparing it with existing bibliography for 3 different types of applied load: tension, shear and a combination of these two. This model includes all necessary considerations: contacts between the plates and the nut, head and shank of the bolt; contact between the plates, as well as friction between them; and pre-load on the bolt. The model also responds properly to loads parallel and perpendicular to the contact surface between the plates, including prying action effects. These calibrated models are then introduced as super-elements in empty spaces left on the full connection, through a relatively simple process using the finite element software ANSYS ®. Upon filling these spaces, two complete connection models are evaluated: one with a single plate and one between two Tstubs. The results obtained with these models are compared with standard forecasts. These two connection types have a practical application in the way they will be analyzed, and also as part of more complex connections: bolted girder splices (in the region of web beam), beam-to-column connections with splice plates or end plate connections, beam splices with end-plates, etc.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical simulation of bolted connections

Vilela

Carvalho

Filho

2018

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…To obtain a pure shear stress state in the specimen shear zone, the SSS specimen is intentionally not axisymmetric in the shear zone. Deformation of eccentric specimens using the SHPB device (Dorogoy et al, 2015;Fransplass et al, 2015;Zhu et al, 2019) may generate bending waves, which distort the reflected and transmitted signals by superposition of bending waves. This phenomenon is observed in several kinds of non-axisymmetric specimens including the compression specimen under shearcompression loading (Hou et al, 2019a,b), inclined compression specimen for adiabatic shear band characterization (Meyer et al, 1994;Nie et al, 2007) and the shear-compression specimen (Dorogoy et al, 2015;Rittel et al, 2002).…”

Section: Validity Of the Strain Wave Signals In Shpb Devicementioning

confidence: 99%

A novel technique for dynamic shear testing of bulk metals with application to 304 austenitic stainless steel

Jia

Rusinek

Pesci

et al. 2020

International Journal of Solids and Structures

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This paper describes a new single-shear specimen (SSS) and method to characterize the dynamic shear behavior of bulk metals using a traditional Split Hopkinson Pressure Bar (SHPB). By this method, the shear behavior of materials can be tested conveniently over a wide range of strain rates within 10 5 s À1 . This technique was applied to a 304 austenitic stainless steel (ASS) under shear strain rates from 0.001 s À1 to 38700 s À1 at room temperature. Based on finite element (FE) simulations, it was found that the deformation of the specimen shear zone was dominated by shear stress/strain components. Stress state parameters represented by stress triaxiality g and Lode angle parameter h were found very close to zero, indicating a deformation mode of simple shear. Besides, an obvious gap existed between the local deformation behavior in the specimen shear zone and the macroscopic stress-strain relations measured by the strain gauges on the SHPB bars. A correction coefficient method was adopted to extract the real shear behavior from the experimentally obtained force-displacement data. Through comparisons between the tested and simulated stress-strain curves, a good agreement was obtained. dynamic compression tests of 304 ASS under strain rate of 2500 s À1 at room temperature. The Young's modulus isE = 210GPa and Poisson's ratiom = 0.33. The yield stress r 0 was taken as 1050 MPa and the strain hardening behavior is described by the Voce type law (1948) r ¼ r 0 þ Að1 À e ÀCep Þ with values of A and C being 888 and 3.14, respectively.

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“…Fransplass et al 9 used a thermo-elastic thermo-viscoplastic constitutive model and a ductile fracture criterion to establish a 3D FE model of threaded steel fasteners, through which they predicted strength and behaviour characteristics. Results showed that the FE model could represent the ultimate load of the threaded steel fasteners with reasonable accuracy, and it was used to simulate tests with loading angles not covered in the experimental study.…”

Section: Prefacementioning

confidence: 99%

Finite element analysis and structural design of axially uniform-loaded nut

Zhao

Liu

Zhang

et al. 2017

The Journal of Strain Analysis for Engineering Design

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Axially heavy-loaded screw pairs are widely used in rolling mill press systems and other heavy equipment. During the working process, the nut is pressed at both ends, which causes equivalent stress at the thread roots in a U-shaped distribution along the height. Thread roots at the ends tend to suffer fracture failure when the equivalent stress is too great. In this article, the finite element software ANSYS is used to establish a 3D model of screw pairs and analyse bearing characteristics. A new structure based on the results of finite element analysis, which improves U-shaped stress distribution, is proposed for the axially uniform-loaded nut, with a different strain-displacement relationship between the nut matrix and the thread teeth. Such a relationship can greatly reduce peak stress at the thread roots of the nut on both ends. Experiments are conducted on the nut using the electrometric method. Results are compared with the finite element results to directly verify the reliability of the finite element model of ordinary screw pairs and indirectly verify the reliability of the structural model of new screw pairs.

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Experimental and numerical study of threaded steel fasteners under combined tension and shear at elevated loading rates

Cited by 23 publications

References 7 publications

Numerical simulation of bolted connections

Numerical simulation of bolted connections

A novel technique for dynamic shear testing of bulk metals with application to 304 austenitic stainless steel

Finite element analysis and structural design of axially uniform-loaded nut

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