Member Stiffness and Contact Pressure Distribution of Bolted Joints

1994 ◽  
Vol 116 (2) ◽  
pp. 550-557 ◽  
Author(s):  
T. F. Lehnhoff ◽  
Kwang Il Ko ◽  
M. L. McKay
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bolted Joints ◽  
Two Dimensional ◽  
Stress Distributions ◽  
Bolted Joint ◽  
Dimensional Problem ◽  
The Finite Element Method ◽  
Contact Pressure Distribution ◽  
Percent Difference

Member stiffnesses and the stress distributions in the bolts and members of bolted joints have been calculated for various bolt sizes, as well as thicknesses and materials of the members. The finite element method has been used to calculate the displacement and the stress distributions in the components of the bolted joint. Using axisymmetric elements, the bolted joint could be analyzed as a two-dimensional problem. Member stiffness ratios were calculated from the finite element results and compared with those calculated by a commonly used theory. The values were approximately comparable (16–30 percent difference) for the assumptions under which the theory was applied. Formulas and dimensionless curves which can be used to estimate the member stiffness ratios for several kinds of bolted joints are presented.

Member Stiffness and Contact Pressure Distribution of Bolted Joints

1993 ◽  
Author(s):  
Terry F. Lehnhoff ◽  
Kwang-Il Ko ◽  
Matthew L. McKay
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bolted Joints ◽  
Two Dimensional ◽  
Stress Distributions ◽  
Bolted Joint ◽  
Dimensional Problem ◽  
The Finite Element Method ◽  
Contact Pressure Distribution ◽  
Percent Difference

Abstract Member stiffnesses and the stress distributions in the bolts and members of bolted joints have been calculated for various bolt sizes, as well as thicknesses and materials of the members. The finite element method has been used to calculate the displacements and the stress distributions in the components of the bolted joint. Using axisymmetric elements, the bolted joint was analyzed as a two-dimensional problem. Member stiffness ratios were calculated from the finite element results and compared with those calculated by a commonly used theory. The differences in values were significant (16–30 percent difference) for the assumptions under which the theory was applied. Formulas and dimensionless curves which can be used to estimate the member stiffness ratios for several kinds of bolted joints are presented.

Finite Element Stress Analysis of the Crowns of Normal and Restored Teeth

1976 ◽  
Vol 55 (6) ◽  
pp. 1004-1011 ◽  
Author(s):  
A.L. Yettram ◽  
K.W.J. Wright ◽  
H.M. Pickard
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Analysis ◽  
Two Dimensional ◽  
Stress Distributions ◽  
The Finite Element Method ◽  
Relative Stiffness ◽  
Finite Element Stress Analysis ◽  
Element Method ◽  
Finite Element Stress

Stress distributions are Presented for a normal and a restored mandibular second premolar under masticatory-type forces. These were obtained using the finite element method of stress analysis aPPlied to two-dimensional models. The effect of the relative stiffness of the materials is examined in each instance.

Proposal of Methodology for Verification of Stress Distribution in Bolted Joints by Optical Method

2015 ◽  
Vol 816 ◽  
pp. 443-450
Author(s):  
František Trebuňa ◽  
Miroslav Pástor ◽  
Peter Frankovský ◽  
Ján Kostka ◽  
Ľubomír Gabáni
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Modelling ◽  
Stress Analysis ◽  
Optical Method ◽  
Contact Problems ◽  
Bolted Joints ◽  
Experimental Measurements ◽  
Bolted Joint ◽  
The Finite Element Method

Nowadays, the most spread method for the solution of contact problems is based on numerical modelling. The bolted joints belong to the complex contact problems. In the paper is given methodology for the stress analysis of bolted joints with modification in the area of the first threads on the nut by the optical method. The stress analysis has been accomplished for the bolted joint without as well as with modification. The results of experimental measurements were verified by numerical modelling by the finite element method.

A simplified numerical and analytical study for assessing the seismic response of a gravity concrete lock

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Neander Berto Mendes ◽  
Lineu José Pedroso ◽  
Paulo Marcelo Vieira Ribeiro
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Study ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Fluid Structure ◽  
Analytical Formulation ◽  
Acoustic Cavity ◽  
Water Chamber ◽  
Structure Problem

ABSTRACT: This work presents the dynamic response of a lock subjected to the horizontal S0E component of the El Centro earthquake for empty and completely filled water chamber cases, by coupled fluid-structure analysis. Initially, the lock was studied by approximation, considering it similar to the case of a double piston coupled to a two-dimensional acoustic cavity (tank), representing a simplified analytical model of the fluid-structure problem. This analytical formulation can be compared with numerical results, in order to qualify the responses of the ultimate problem to be investigated. In all the analyses performed, modeling and numerical simulations were done using the finite element method (FEM), supported by the commercial software ANSYS.

Implementation of p and h-p Versions of the Finite Element Method

1992 ◽  
Author(s):  
Ye-Chen Lai ◽  
Timothy C. S. Liang ◽  
Zhenxue Jia
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Elastic Analysis ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Shape Functions ◽  
Linear Elastic ◽  
Finite Element Software ◽  
Analysis Process ◽  
Adaptive Analysis

Abstract Based on hierarchic shape functions and an effective convergence procedure, the p-version and h-p adaptive analysis capabilities were incorporated into a finite element software system, called COSMOS/M. The range of the polynomial orders can be varied from 1 to 10 for two dimensional linear elastic analysis. In the h-p adaptive analysis process, a refined mesh are first achieved via adaptive h-refinement. The p-refinement is then added on to the h-version designed mesh by uniformly increasing the degree of the polynomials. Some numerical results computed by COSMOS/M are presented to illustrate the performance of these p and h-p analysis capabilities.

Sign in / Sign up

Export Citation Format

Share Document