Computation of Member Stiffness in Bolted Connections

Wileman, J.; Choudhury, M.; Green, I.

doi:10.1115/1.2912801

Cited by 84 publications

(75 citation statements)

References 8 publications

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“…It should be noted that the graph over stiffness provided in both [16] and [11] shows the numerical FE results found in [16] and not the curve fit presented in (4). The curve fit using exponential functions does not seem to be appropriate and fails drastically when αd/L becomes large.…”

Section: Introductionmentioning

confidence: 87%

“…In Fig. 3 we have plotted, as also done in [16] and [11], the dimensionless stiffness, k m /(Eαd), as a function of the ratio between the clearance of the hole and the length of the member, αd/L. The plot is done for the case where α = 1.1 and β = 1.7.…”

Section: Introductionmentioning

confidence: 99%

“…In [11] researchers propose using (2) also with θ = 30 • . As an alternative to these stiffness calculations both [7] and [11] suggest to use the results found by [16], which is a curve fit to FE results that is given by…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On prestress stiffness analysis of bolt-plate contact assemblies

Pedersen

2007

Arch Appl Mech

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Bolt connections are among the most important connections used in structures. The stiffnesses of the bolt and of the connected members are the primary qualities that control the lifetime of the connection. The stiffness of the bolt can be estimated rather easily, in contrast to the member stiffness, but with finite element (FE) and contact analysis, it is possible to find the stiffness of the member. In the case of many connections and for practical applications, it is not suitable to make a full FE analysis. The purpose of the present paper is to find simplified expressions for the stiffness of the member, including the case when the width of the member is limited. The calculation of the stiffness is based on the FE, including the solution to the contact problem, and we express the stiffness as a function of the elastic energy in the structure, whereby the definition of the displacements related to the stiffness is circumvented. The contact analysis is performed using a method where iterations are not necessary, and the results are compared to alternative available results. New practical formulas for the stiffnesses are suggested.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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On prestress stiffness analysis of bolt-plate contact assemblies

Pedersen

2007

Arch Appl Mech

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“…Grosse and Mitchell (1990), Wileman et al (1991), Lehnhoff and Wistehuff (1996), Chaaban and Muzzo (1991) and Chaaban and Jutras (1992) studied stresses in threaded connections by axisymmetrical finite element models by ASME Code. In order to investigate the helical effect on the thread connection, Chen and Shih (1999) built a three-dimensional bolt-nut assembly by ABAQUS.…”

Section: Introductionmentioning

confidence: 99%

A prediction method for load distribution in threaded connections

Zhang

Gao

Niu

et al. 2018

jtam

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A new method has been developed for predicting the load distribution along the thread portion of a bolt and nut connection. The calculated results were validated by comparison with three-dimensional finite element analysis and Yamamoto's method. It was shown that the load distribution predicted by the model in this paper was in good agreement with the results from finite element model, and the load ratio on the first thread by the prediction model and finite element model was slightly larger than the results from Yamamoto's method. In addition, the results of calculation and finite element analysis indicated that the decreasing of the lead angle could improve the load distribution, the increasing of the length of thread engaged could significantly improve the load bearing capacity of the first thread, and the adopting of a material with low stiffness for the nut with respect to the bolt could improve the load distribution slightly.

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“…Many researchers such as Maruyama et al 1 and Motash 2 used different techniques, mainly numerical, to investigate the stiffness of the joint and the effect of different design parameters. Wileman et al 3 performed a two-dimensional (2D) finite element analysis (FEA) for joints having a range of materials and geometries. Shigley et al 4 presented an analytical solution for member stiffness, based on the work of Lehnhoff and Wistehuff.…”

Section: Introductionmentioning

confidence: 99%

A new computational method for threaded connection stiffness

Zhang

Gao

2016

Advances in Mechanical Engineering

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For designing bolted connections in machinery applications, it is necessary to estimate the stiffness of the threaded connection. This work provides a new method for computing the stiffness of engaged screw in bolted connections according to the load distribution in screw thread. Finite element analysis is performed by building the three-dimensional model of threaded connection. A set of tensile tests are exerted to validate the accuracy of the suggested model of threaded connection. A good agreement is obtained when the analytical results are compared with finite element analysis results, experimental data, and Yamamoto method. Results reveal that the ultimate strength of thread connections is obviously lower than that of thread material. In addition, the results of calculation and finite element analysis indicated that increasing Young's modulus of material and the engaged length or decreasing thread pitch could increase the stiffness of the thread portion of a bolt and nut.

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Computation of Member Stiffness in Bolted Connections

Cited by 84 publications

References 8 publications

On prestress stiffness analysis of bolt-plate contact assemblies

On prestress stiffness analysis of bolt-plate contact assemblies

A prediction method for load distribution in threaded connections

A new computational method for threaded connection stiffness

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