General static load-carrying capacity for the design and selection of four contact point slewing bearings: Finite element calculations and theoretical model validation

2012 ◽  
Vol 55 ◽  
pp. 23-30 ◽  
Author(s):  
Josu Aguirrebeitia ◽  
Mikel Abasolo ◽  
Rafael Avilés ◽  
Igor Fernández de Bustos
Keyword(s):  
Finite Element ◽  
Theoretical Model ◽  
Carrying Capacity ◽  
Static Load ◽  
Contact Point ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Finite Element Calculations ◽  
Slewing Bearings ◽  
Selection Of

Static Load Carrying Capacity in Four Contact Point Slewing Bearings: Theoretical and Preliminary Finite Element Calculations

2010 ◽  
Author(s):  
Josu Aguirrebeitia ◽  
Mikel Abasolo ◽  
Rafael Avile´s ◽  
Igor Fernandez de Bustos ◽  
Rube´n Ansola
Keyword(s):  
Finite Element ◽  
Theoretical Model ◽  
Finite Element Model ◽  
Carrying Capacity ◽  
Static Load ◽  
Contact Point ◽  
Element Model ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Slewing Bearings

This paper presents a theoretical model to calculate the general static load-carrying capacity of four-contact-point slewing bearings under axial, radial and tilting-moment loads, compared with preliminary results obtained from a detailed parametric finite element model of the bearing. The theoretical model is based on a generalization of Sjova¨ll and Rumbarger’s equations and provides an acceptance surface in the load space. The finite element model is based on the modelization of the balls via nonlinear traction-only equivalent spring concept. The aim is to validate the theoretical model to be used as an acceptance curve generator for slewing bearing design.

Calculation of General Static Load-Carrying Capacity for the Design of Four-Contact-Point Slewing Bearings

2010 ◽  
Vol 132 (6) ◽  
Author(s):  
Josu Aguirrebeitia ◽  
Rafael Avilés ◽  
Igor Fernández de Bustos ◽  
Mikel Abasolo
Keyword(s):  
Carrying Capacity ◽  
Static Load ◽  
Contact Point ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Slewing Bearings ◽  
Selection Of

This paper presents a calculation of the general static load-carrying capacity of four-contact-point slewing bearings under axial, radial, and tilting-moment loads. This calculation is based on a generalization of Sjoväll and Rumbarger’s equations and provides an acceptance surface in the load space. This acceptance surface provides a solid basis to compute acceptance curves for the design and selection of bearings of this kind.

New selection curves for four contact point slewing bearings

2015 ◽  
Vol 230 (10) ◽  
pp. 1715-1725 ◽  
Author(s):  
Mikel Abasolo ◽  
Ibai Coria ◽  
Jon Plaza ◽  
Josu Aguirrebeitia
Keyword(s):  
Static Load ◽  
Contact Point ◽  
Load Carrying Capacity ◽  
Bolted Joint ◽  
Clear Explanation ◽  
Load Carrying ◽  
Static Failure ◽  
Contact Failure ◽  
Slewing Bearings ◽  
Selection Of

The selection of slewing bearings is based on the static load-carrying capacity. In this sense, manufacturers provide selection curves in their catalogues. However, little information is given about their origin. This work develops new and more versatile selection curves for four contact point slewing bearings, with a clear explanation of their background, scope and limitations. The new curves take into account the two possible static failure types, the ball-raceway contact failure and the bolted joint failure.

scholarly journals Contact Analysis and Static Load Carrying Capacity of Planetary Roller Screw Mechanism

2020 ◽  
Author(s):  
Nam Su Kim ◽  
Kyongho Kim ◽  
Sinhyok Jong
Keyword(s):  
Finite Element ◽  
Contact Stress ◽  
Carrying Capacity ◽  
Static Load ◽  
Load Capacity ◽  
Load Carrying Capacity ◽  
Elastic Plastic ◽  
Load Carrying ◽  
Roller Screw ◽  
Screw Mechanism

Abstract This paper aims to investigate the contact characteristics and static load carrying capacity of planetary roller screw mechanism (PRSM). Compared to the ball screw mechanism, the advantages of the PRSM are high stiffness, high load capacity, long travel life and compact structure, etc., since the PRSM possesses more contact points than ball screws in a comparable size. The actuated load is carried through the threaded surface contacts of the screw, the rollers and the nut and the contact characteristics of these components are very important for studying the wear, transmission accuracy and efficiency of a PRSM. Prior work has neglected to take a fundamental approach towards understanding the elastic-plastic contact characteristics of threaded surfaces under high loads and it is closely related to the static load carrying capacity of PRSM. Accordingly, in this paper, the contact characteristics of PRSM under the different working loads are modeled based on Hertz contact theory and the calculation formulas between normal force of thread turns and the elastic-plastic contact stress and deformation are derived. Then, it goes further to derive a calculation method of static load carrying capacity of PRSM based on simplified model of static load distribution. Finally, a verification model is developed by finite element method (FEM) to perform contact stress and strain analysis of PRSM. Besides, through the comparison of the results between the theory model and ANSYS Workbench finite element model verify the reliability of the theory.

scholarly journals The static load carrying capacity of a corner joint of concrete filled circular steel column.

2002 ◽  
pp. 13-27 ◽  
Author(s):  
Noriyuki HORICHI ◽  
Tetsuya HOSAKA ◽  
Teruhiko YODA ◽  
Shinichi KATSUO
Keyword(s):  
Carrying Capacity ◽  
Static Load ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Steel Column

Determination of the Load Carrying Capacity of Honeycomb Panels at Fixing Points under an External Load

2020 ◽  
Vol 299 ◽  
pp. 1184-1189
Author(s):  
V.V. Zhukov ◽  
Anton V. Eremin ◽  
D.V. Stepanec
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Model ◽  
Carrying Capacity ◽  
External Load ◽  
Element Model ◽  
Load Carrying Capacity ◽  
The Finite Element Method ◽  
Load Carrying ◽  
Honeycomb Panel

In this article, the object of study is a three–layer honeycomb panel with fixing elements (FE), which are used for transporting the panel, and fixing it to the spacecraft. The goal of the work is to determine experimentally the load carrying capacity of the fixing elements under various types of loading, to determine the load carrying capacity of the honeycomb panel of the spacecraft at fixing points and further comparison of the experimental results with the finite element method results calculated by MSC.Patran / Nastran. A method for conducting static tests of fixing elements of a spacecraft honeycomb panel under an external load is described, a description of computer technology of a finite–element solution to the problem of static strength of a honeycomb panel structure in the MSC.Patran environment is presented, and a finite–element model of a honeycomb panel is designed. An assessment of the strength of a three–layer structure at fixing points was carried out, followed by validation of the finite–element model of a honeycomb panel. On the basis of the validated model, the evaluation of the strength of the honeycomb structure was carried out; based on results obtained, the conclusion has been made about the convergence of the results by the finite element method with the results obtained during the experiment.

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