scholarly journals Finite-Element Analysis of Parts Stress State of Tight Joint Assembled by Press Fitting

2014 ◽  
Vol 04 (04) ◽  
pp. 198-206
Author(s):  
Sinitsyna Vasilya ◽  
Sinitsyn Anton
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress State ◽  
Element Analysis ◽  
Press Fitting

Investigation on stress distribution and pressure capacity of two-layer split high-pressure die based on finite element analysis

2019 ◽  
Vol 233 (14) ◽  
pp. 5048-5055
Author(s):  
Z Yi ◽  
WZ Fu ◽  
MZ Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Pressure ◽  
Stress State ◽  
Von Mises Stress ◽  
Stress Distributions ◽  
Element Analysis ◽  
Round Cylinder ◽  
Von Mises ◽  
Supporting Ring

In order to obtain a higher pressure capacity for the high-pressure die with a larger sample cavity, two types of two-layer split dies with a round cylinder and a quadrate cylinder were designed based on the conventional belt-type die. Finite element analysis was performed to investigate the stress distributions and pressure capacities of the high-pressure dies using a derived Mohr–Coulomb criterion and the von Mises criterion for the cylinder and supporting rings, respectively. As predicted by the finite element analysis results, in the two-layer split dies with a round cylinder, the stress state of the cylinder can be only slightly improved; and the von Mises stress of the first layer supporting ring can be hardly decreased. However, in the two-layer split dies with a quadrate cylinder and sample cavity, the stress state of the cylinder can be remarkably improved. Simultaneously, the von Mises stress of the supporting rings, especially for the first-layer supporting ring, can be also effectively decreased. The pressure capacities of the two-layer split dies with a round cylinder and a quadrate cylinder are 16.5% and 63.9% higher with respect to the conventional belt-type die.

Finite Element Analysis of the Effect of Twist on Chain Fatigue Performance

2019 ◽  
Author(s):  
Justin Jones
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Stress State ◽  
Element Analysis ◽  
Contact Patch ◽  
Multiaxial Stress State ◽  
Twisted State ◽  
Residual Stress State ◽  
Proof Testing

Abstract Mooring chains may be installed with twist or become twisted during service. This paper describes an investigation of the effect of a range of twist angles on the fatigue life of studless chain through the use of detailed finite element analysis. The analysis includes the local contact patch deformation and residual stress state that results from plasticity during the proof testing of the chain. The effect of high in-service tension resulting from storms that produces additional plasticity when the chain is loaded in the twisted state is also included. The change in fatigue life at the crown, inner bend and around the contact patch are assessed. Local to the contact patch the fatigue life calculation includes an assessment of the multiaxial stress state. For small angles of twist the calculated fatigue life at the crown and around the contact increases and that at the inner bend sees a marginal reduction. At twist angles above 12 to 14 degrees per link the calculated inner bend and contact patch fatigue lives reduce markedly with increasing twist, but the crown fatigue life continues to increase.

scholarly journals Finite Element Analysis of Wrinkling Membranes

1997 ◽  
Vol 64 (2) ◽  
pp. 263-269 ◽  
Author(s):  
Seokwoo Kang ◽  
Seyoung Im
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress State ◽  
Iterative Scheme ◽  
Uniaxial Tensile ◽  
Element Analysis ◽  
Good Convergence ◽  
Elastic Membranes ◽  
Lagrangian Finite Element ◽  
Anisotropic Elastic

A new iterative scheme is proposed for finite element analysis of wrinkling or tension structures. The scheme is based upon the observation that there exists an invariant relationship, due to the uniaxial tensile stress state of wrinkling, between some of the strain components referred to the local frame aligned with wrinkling in a region where wrinkling occurs. This enables us to update the stress state and the internal forces correctly taking into account the existence of wrinkling. The finite element implementation of the scheme is straightforward and simple, and only minor modifications of the existing total Lagrangian finite element codes for membranes are needed. The validity of the scheme is demonstrated via numerical examples for the torsion of a membrane and the quasi-static inflation of an automotive airbag, both made of isotropic or anisotropic elastic membranes. The examples suggest that the present iterative scheme has a good convergence characteristic even for a large loading step.

scholarly journals The 3-D finite element analysis of press fitting process in railway wheel-set

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Soheil Sarabandi ◽  
Hesam Soleimani ◽  
Saeed Mahmoudi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Railway Wheel ◽  
Press Fitting

Finite Element Analysis of Installation Failures in Engine Cylinder-Liners

2020 ◽  
Author(s):  
Satya Prasad Paruchuru ◽  
Pramila Rani Maturi ◽  
Jashwitha Nuthalapati
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Thin Cylinder ◽  
Press Fitting ◽  
Engine Cylinder ◽  
Definition Of ◽  
Cylinder Bore ◽  
Cylinder Liners ◽  
The Impact

Abstract There exist concerns regarding the failures that occur during the installation of thin cylinder-liners of engines at the authorized and unauthorized service centers. Analyzing the probable causes from the points of view of the design, manufacturing, and authorized and unauthorized installation procedures define the problem. The problem involves the simulation of the process of press-fitting the liner into the cylinder bore. A choice of finite element analysis using commercially available software ANSYS helped the analysis of the probable causes of failure. Estimation of the probable loads experienced by the cylinder-liners during the procedures that exist in the installation-process paved the way to the definition of loads that prevail in the problem of relevance. Prediction of the nature of contacts that prevail in the current problem and the impact of the application of the loads enabled the definition of constraints for the simulation procedures. Reference material properties chosen in the conservative sense modeled the problem realistically. The evolution of the recommendations for the manufacturing and installation of thin cylinder-liners concluded the study.

Virtual Modeling and Finite Element Analysis of Flexspline Based on Solidworks

2011 ◽  
Vol 86 ◽  
pp. 218-221 ◽  
Author(s):  
Rong Zhang ◽  
Jia Jun Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress State ◽  
New Method ◽  
Direct Impact ◽  
Element Analysis ◽  
Wave Generator ◽  
Construct Theory ◽  
Gear Mechanism ◽  
Virtual Modeling

In harmonic gear mechanism, flexspline’ stress state have a direct impact on selecting wave generator as middle flexible components, this paper firstly simplify flexspline model, construct theory models, then simulate flexspline to compare and analyze in different wave generator, through this，we can select reasonable structure of wave generator from harmonic gear mechanism, provides a new method to design harmonic gear mechanism.

Sign in / Sign up

Export Citation Format

Share Document