May 01,2020·In this study,the effects of the steel grades of base metal,initial bolt bearing condition,and weld configuration were experimentally evaluated for the combined welded and bolted lap joints to better understand the joint behavior,to develop an appropriate analytical model and to improve the associated strength equations. results for this questionHow are bolts oriented on a single angle connection?How are bolts oriented on a single angle connection?All bolts on each side of the angle are oriented with the heads in the same direction and placed so the threaded end of the beam side of the connection faces the bolt heads on the girder side of the connection.Dimensions can be seen in Figure 2.4 Figure 2 Single Angle Connection Details Test Setup and Experiment Design TENSION CAPACITY OF BOLTED SINGLE ANGLE SHEAR CONNECTION results for this questionHow is a bolt-plate interaction stiffness equation verified?How is a bolt-plate interaction stiffness equation verified?A bolt-plate interaction stiffness equation is proposed which is verified by the experimental test and finite element analysis (FEA).The experimental investigation was performed using lap shear bolt connection testing and the connections were fabricated from cold-formed steel.2.Material Properties and Model DescriptionAn Analytical Method for Determining the Load Distribution
experimental difficulties,the body of work in this area has beenvery limited and definite verification of analytical results by experiment is not cited in the literature.The research described in the succeeding chapters was undertaken with the following primary objectives a) To provide a method of solution for the case of two bolted
experimental and analytical study was initiated at the University of Missouri-Rolla (UMR) in 1993 to expand the knowledge and understanding pertaining to the behavior of cold-formed steel bolted connections.The details of this research project are reported in two research reports (Carril et al.,1994; Holcomb et al.,1995).An Analytical Method for Determining the Load Distribution The purpose of this research was to investigate the effect of geometric variables on the bolt load distributions of a cold-formed steel bolt connection.The study was conducted using an experimental test,finite element analysis,and an analytical method.The experimental study was performed using single-lap shear testing of a concentrically loaded bolt connection fabricated from G550 cold An Experimental and Computational Study of SteelAn Experimental and Computational Study of Steel Moment Connections under a Column Removal Scenario .Fahim Sadek Joseph A.Main .H.S.Lew .Building and Fire Research Laboratory .National Institute of Standards and Technology .Stephen D.Robert .Vincent P.Chiarito .Engineer Research and Development Center.U.S.Army Corps of Engineers
Jun 07,2020·Shear performance of un-grouted rock bolts under combined loads and shear gap was analysed.Combined load was found to reduce the axial and shear capacity of the rock bolts by up to 18% and 30%,respectively.These studies show that combined loading has a significant effect on the shear behaviour of the rock bolt.Analysis of the Combined Load Behaviour of Rock Bolt The results of this study showed that the rock bolt can resist higher axial loads than shear under pure or combined load conditions.Under combined load conditions,the rock bolt capacity Author John H.Crews,Rajiv A.NaikPublish Year 1989Investigation of bolted/bonded composite joint behaviour Jun 15,2017·The study of bolted/bonded composite joints for aerospace was started in the 1980s with Hart-Smith,and their study was revisited in the mid-1990s with the research performed by Tan and Steward,.Recently,Bodjona carried out the first up-to-date review on this topic.
A combined experimental and analytical study has been conducted to investigate the effects of simultaneous bearing and bypass loading on a graphite/epoxy (T300/5208) laminate.Tests were conducted with a test machine that allows the bearing-bypass load ratio to be controlled while a single-Bearing Failure of Bolted Composite Joints.Part I An investigation was performed to study the bearing failure of mechanically fastened fiber-reinforced laminated composite joints.Only double-lap metal/composite/metal bolted joints were investigated.The results of this study will be presented in two parts experimental characterization and analyticalBearing-bypass loading in composite joints - Testing and Bearing-bypass loading in composite joints - Testing and stress analysis A combined experimental and analytical study of bearing and bypass loading on single-fastener specimens of a 16-ply,quasi-isotropic T300/5208 graphite/epoxy laminate with a centrally located hole is reported.The specimens were loaded in either tension or compression,and onset damage,ultimate strengths,and corresponding failure
May 15,2019·Sun,J,Qiu,H,Jiang,H (2019) Experimental study and associated mechanism analysis of horizontal bolted connections involved in a precastCited by 1Publish Year 1991Author John H.Crews,Rajiv A.NaikStamina of a Nongasketed Flange Joint Under Combined Apr 07,2009·Performance of a bolted flange joint is characterized mainly due to its strength and sealing capability. A number of analytical and experimental studies have been conducted to study these characteristics only under internal pressure loading.Cited by 1Publish Year 2020Author Dae-Kyung Kim,Cheol-Ho LeeExperimental and analytical study of combined bolted Experimental and analytical study of combined bolted-welded lap joints including high-strength steel Kim,Dae-Kyung; Lee,Cheol-Ho download BookSC.Download books for free.Find books
Nov 01,2009·Barnett et al.,performed a review of different blind-bolting options and carried out an experimental study on blind-bolted T-stubs and connections using Hollo-bolts.To improve the clamping mechanism,a modified blind-bolt,referred to as the Reverse Mechanism Hollo-Bolt (RMHB) was proposed.At present,information on the behaviour of blind-bolted connections is limited,particularly for angle connections,and there are no reported studiesCited by 2Publish Year 2020Author Dongfeng Zhang,Jiacheng Zhou,Kuanmin MaoNumerical and Experimental Study of Elastic Interaction in Jan 11,2017·The validity of the finite-element analysis (FEA) is supported by experimental tests conducted on a NPS 4 class 900 weld neck bolted flange joints using fiber and flexible graphite gaskets.This study provides guidance and enhances the safety and reliability of bolted flange joints by minimizing bolt load scatter due to elastic interaction.Cited by 4Publish Year 2011Author Yong Jiu Shi,Lei Wang,Yuan Qing Wang,Jian Suo Ma,Run Shan BaiStudy of cable bolt shear strength characteristics for Hence,a deep understanding of bolt behaviour subjected to combined loads is essential in bolting system design and assessment.In the past,a number of experimental and theoretical investigations were conducted on the shear behaviour of the rock discontinuity reinforced by rock bolts and a few preliminary conclusions were drawn.
Jan 01,2005·Freeman ,monitoring the loading process of the bolts and the distribution of stresses along fully grouted rock bolts in the Kielder experimental tunnel,proposed the concepts of neutral point,pick-up length and anchor length.At the neutral point,the shear stress at the interface between the bolt and the grout medium is zero,while the tensile axial load of the bolt has a peak value.Cited by 9Publish Year 1988Author John H.Crews,Rajiv-Vikas A.NaikExperimental and analytical studies on bearing capacity of ·These specimens used removable links fastened to beams using flush end-plate bolted connections.To investigate the seismic performance of HSS-EBFs,a half-scale three-storey one-bay K-type HSSEBF (K-HSSEBF) specimen with shear links was tested under cyclic loading,and four groups of K-HSSEBFs are designed and analyzed by pushover and dynamic to research the seismicCombined bearing and bypass loading on a graphite/epoxy Abstract.A combined experimental and analytical study was conducted to determine the behavior of a graphite/epoxy laminate subjected to combined bearing and bypass loading.Single-fastener quasi-isotropic specimens were loaded at various bearing-bypass ratios until
Many researchers devoted extensive efforts to interpret the behaviors of shear lag effects on bolted connections using both experimental and analytical methods.Effects of bolt-hole contact on bearing-bypass damage Jan 01,1991·A combined experimental and analytical study was conducted to investigate the effects of bolt-hole contact on the bearing bypass strength of a graphite-epoxy laminate.Tests were conducted on specimens consisting of 16-ply quasi-isotropic T300/5208 laminates with a centrally located hole.Bearing loads were applied through a clearance-fit steel bolt.Experimental Study on Shear Behavior of Bolted Cement Jun 27,2019·First,a shear test apparatus which could provide CNS (constant normal stiffness) condition was designed.Then,more than 140 bolted and non-bolted cement mortar blocks (100 × 100 × 100 mm) were prepared.The strengthening effect of bolts with diameters of 0 10 mm on cement mortar specimens was studied under different initial normal loads ranging from 20 kN to 60 kN and constant
Jan 21,2014·In this paper,experimental studies on SCS sandwich composite beams with different types of concretes and novel shear connectors are presented.This is followed by the development of analytical model to predict the ultimate strength of the SCS sandwich composite beams.Finite Element Analysis of the Combined Connection with The combined connection with welds and bolds has advantages of both welds and bolts connections,and can be widely used in reinforcing the joint in steel structure.In this paper,the Finite Element Method (FEM) was taken to analyze the carrying capacity of the combined connection with bolts and welds,and the results ware compared with those come from experimental investigation.Screw connections subject to tension pull-out and shearCurrently,the behavior of screw connections subject to combined tension pull-out and shear forces is not well understood.An experimental study was conducted at Missouri University of Science and Technology to better understand the relationship or interaction between these forces.The test program evaluated four parameters that may
In order to study the effect of different bolts tightening sequences on the stress of bolts work-piece,the finite element simulation and stress test experiments are adopted.Three types of bolt work-piece two,five,and frame type bolts work-pieces are studied under different tightening sequences.The stress values and distribution are obtained under different tightening sequences by simulation.TENSION CAPACITY OF BOLTED SINGLE ANGLE SHEARThis research is aimed at experimental determination of the axial capacity of asymmetric single angle connections and proposing simple analytical models suitable for design use.Experiments test six all-bolted single angle connections under axial tension.Under increasing tension,asymmetric connections unfold such that the line of action ofcombinedexperimentalandanalyticalstudyhas been conducted to investigate the effects of simultaneous bearing and bypass loading on a graphite/epoxy (T300/5208) laminate.Tests were conducted with a test machine that allows the bearing-bypass load ratio to be controlled while a single- fastener coupon is loaded to failure in either tension or compression.Test coupons consisted of 16-ply quasi-isotropic graphite/epoxy laminates with a centrally- located 6.35-mm bolt having a clearance fit.Onset-damage and ultimate strengths were determined for each test case.Next,a finite element stress analysis was conducted for each test case.The computed local stresses were used with appropriate failure criteria to analyze the observed failure modes and strengths.An unexpected interaction of the effect of the bypass and bearing loads was found for the onset of compression-reacted bearing damage.This interaction was caused by a decrease in the bolt-hole contact arc and a corresponding increase in the severity of the bearing loads.The amount of bolt-hole contact had a significant effect on local stresses and,thus,on the calculated damage-onset and ultimate strengths.An offset-compression failure mode was identified for laminate failure under compression bearing-bypass loading.This failure mode appears to be unique to compression bearing-bypass loading and,therefore,cannot be predicted from simple tests.Author:John H.Crews,Rajiv-Vikas A.NaikCited by:9Publish Year:1988BEARINGBYPASS LOADING ON BOLTED COMPOSITE JOINTSWas this helpful?People also askWhy are bolt connections used in cold formed steel?Why are bolt connections used in cold formed steel?A bolt connection is generally used in cold-formed steel structures.It can result in a high-stress concentration at contact regions,especially with thin cold-formed steel members.An Analytical Method for Determining the Load Distribution