Journal ArticleDOI
Finite Element Based Member Stiffness Evaluation of Axisymmetric Bolted Joints
Raju Sethuraman,T. Sasi Kumar +1 more
TLDR
In this paper, a linear elastic axisymmetric finite element analysis was performed to evaluate the member stiffness, and the results obtained are compared with the results available in the literature, and wide ranges of bolt sizes, joint thicknesses and material properties were considered in the analysis to evaluate characteristic behavior of member stiffness.Abstract:
For a reliable design of bolted joints, it is necessary to evaluate the actual fraction of the external load transmitted through the bolt. The stiffness of the bolt and the member of the joint decide the fractions of external load shared by the bolt and the member. Bolt stiffness can be evaluated simply by assuming the load flow to be uniform across the thickness and the deformation is homogeneous. Then, bolt may be modeled as a tension member and the stiffness can be easily evaluated. But, the evaluation of the member stiffness is difficult because of the heterogeneous deformation. In the present work, joint materials are assumed to be isotropic and homogeneous, and linear elastic axisymmetric finite element analysis was performed to evaluate the member stiffness. Uniform displacement and uniform pressure assumptions are employed in idealizing the boundary conditions. Wide ranges of bolt sizes, joint thicknesses, and material properties are considered in the analysis to evaluate characteristic behavior of member stiffness. Empirical formulas for the member stiffness evaluation are proposed using dimensionless parameters. The results obtained are compared with the results available in the literature.read more
Citations
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Journal ArticleDOI
Virtual material parameter acquisition based on the basic characteristics of the bolt joint interfaces
TL;DR: In this article, a joint modeling method based on the principle that the basic characteristic parameters of the joints equal the material strain energy is presented. And the results show that the virtual material model can provide a theoretical basis for the accurate joint modeling.
Proceedings ArticleDOI
An Evaluation of Common Analysis Methods for Bolted Joints in Launch Vehicles
Grant M. Henson,Bryes A. Hornish +1 more
TL;DR: In this paper, the authors exploit finite element predictions for the dierential thermal expansion problem to provide estimates of geometric quantities uncontaminated by the prying action introduced by external forces and then use these accurately determined eective quantities to make hand predictions of bolt force in a ange joint under combined external loading and temperature changes.
Journal ArticleDOI
Finite element analysis and mathematical characterization of contact pressure distribution in bolted joints
Jianbin Cao,Zhousuo Zhang +1 more
TL;DR: In this article, a three-dimensional finite element model of the bolted joints is established using the software ANSYS, and pretension force and contact between the joint components are accommodated in the model.
Proceedings ArticleDOI
Member stiffnesses and interface contact characteristics of bolted joints
TL;DR: In this article, the deformation mechanism of bolted members and the characterization of the interface contact conditions were investigated. But the authors focused on the performance of bolted joints and did not consider the impact of the stiffness of the members on the bearing and transferring of the initial preload and the operating force.
Journal ArticleDOI
Stiffness Calculation Method and Stiffness Characteristic Analysis of Bolted Connectors
TL;DR: In this article, a new method for calculating the stiffness of bolted joints is presented, and the effect of joint surface stiffness on the overall stiffness is considered; the results show that the theoretical model presented in this paper is more practical.
References
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Book
Fundamentals Of Machine Design
P. Orlov,A. Troitsky +1 more
TL;DR: The fundamental principles of machine design are studied in detail in order to establish a clear picture of the design process and its goals.
Journal ArticleDOI
Nonlinear Axial Stiffness Characteristics of Axisymmetric Bolted Joints
Ian R. Grosse,L. D. Mitchell +1 more
Journal ArticleDOI
On prestress stiffness analysis of bolt-plate contact assemblies
TL;DR: In this article, the stiffness of a bolt is calculated as a function of the elastic energy in the structure, whereby the definition of the displacements related to the stiffness is circumvented.
Journal ArticleDOI
Sensitivity Analysis of the Conical-Shaped Equivalent Model of a Bolted Joint
TL;DR: In this article, the conical-shaped equivalent model for a bolted joint is considered and the governing equations for this model are made non-dimensional for the purposes of conducting sensitivity analysis.