Advances in computational contact mechanics

Meguid, S. A.; Czekanski, Aleksander

doi:10.1007/s10999-008-9077-z

Cited by 19 publications

(4 citation statements)

References 36 publications

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“…In contrast to the classical method of contact detection node-tosegment method, the segment-to-segment method is a consistent and stable method, and is able to easily pass the patch test (El-Abbasi and Bathe 2001). Also, the segment-to-segment method is able to reduce the error in calculating contact stresses with a mesh refinement (Meguid and Czekanski 2008;Zavarise and De Lorenzis 2009). The numerical technique used to solve the mechanical problem was the solver constraints technique.…”

Section: Combining Fem and Mrs To Optimize Mechanical Problemsmentioning

confidence: 99%

Optimization of operating conditions for a double-row tapered roller bearing

Lostado

Escribano-García

Martinez

2015

Int J Mech Mater Des

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This paper proposes a methodology that combines the Finite Element Method and multiple response surface optimization to search for the optimal operating conditions of a double-row Tapered Roller Bearing (TRB) that has a Preload (P), radial load (F r ), axial load (F a ) and torque (T). Initially, FE models based on a double-row TRB are built and validated in the basis of experimental data and theoretical models. Three of the most important parameters used in the design of TRB were obtained from a simulation of the FE models with a combination of several operating conditions that were previously selected in accordance with a design of experiments. The design parameters are: contact stress radio for both rows of rollers (S 1 and S 2 ), maximum deformation of the outer raceway (a max ), and the difference between the gaps of the inner raceways (Dd) or misalignment. Based on the results of the FE simulations, quadratic regressions models are generated that use the response surface method to predict the design parameters when new operating condition are applied. Then, a multi-response optimization study based on these models and using desirability functions is conducted. It is concluded that the accuracy of the results demonstrates that this methodology may be used to search for the optimal operating condition in a double-row TRB. KeywordsDouble row tapered roller bearing Á Finite element method Á Design of experiments Á Multiple response surface optimization List of symbols l t Rollers' effective length (mm) d m Mean diameter of tapered roller (mm) D max Diameter of tapered roller at large end (mm) D min Diameter of tapered roller at small end (mm) D m Bearing pitch diameter (mm) D i Bore diameter (mm) D o Outer diameter (mm) L Longitude of the bearing (mm) Z Number of rollers b oSemi minor axis of the projected contact ellipse (mm) K n Load deflection factor r

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Section: Combining Fem and Mrs To Optimize Mechanical Problemsmentioning

confidence: 99%

Optimization of operating conditions for a double-row tapered roller bearing

Lostado

Escribano-García

Martinez

2015

Int J Mech Mater Des

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“…The study of the contacts [30] was another key for the adaptation of the models. Changes were implemented to relax the contact definitions while keeping the performance of the calculations within known limits as they were provided directly by the reference data.…”

Section: Definition and Analysis Of The Fe Modelsmentioning

confidence: 99%

Evaluation of an FE Model for the Design of a Complex Thin-Wall CFRP Structure for a Scientific Instrument

et al. 2019

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In this paper, the reliability of a finite element (FE) model including carbon-fibre reinforced plastics (CFRPs) is evaluated for a case of a complex thin-wall honeycomb structure designed for a scientific instrument, such as a calorimeter. Mechanical calculations were performed using FE models including CFRPs, which required a specific definition to describe the micro-mechanical behaviour of the orthotropic materials coupled to homogeneous ones. There are well-known commercial software packages used as powerful tools for analyzing structures; however, for complex (many-parts) structures, the models become largely time consuming for both definition and calculation, which limits the appropriate feedback for the structure’s design. This study introduces a method to reduce a highly nonlinear model, including CFRPs, into a robust, simplified and realistic FE model capable of describing the deformations of the structure with known uncertainties. Therefore, to calculate the deviations of our model, displacement measurements in a reduced mechanical setup were performed, and then a variety of FE models were studied with the objective to find the simplest model with reliable results. The approach developed in this work leads to concluding that the deformations evaluated, including the uncertainties, were below the actual production tolerances, which makes the proposed model a successful tool for the designing process. Ultimately, this study serves as a future reference for complex projects requiring intensive mechanical evaluations for designing decisions.

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“…From a mathematical point of view, any problems involving contact should be rigorously solved by using methods of variational inequalities [47][48][49]. Such approaches, however, are not directly applicable for implementation in FE analyses.…”

Section: Variational Equality Formulationmentioning

confidence: 99%

Finite element nonlinear dynamic analysis of sandwich plates with partially detached facesheet and core

Burlayenko

2012

Finite Elements in Analysis and Design

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Advances in computational contact mechanics

Cited by 19 publications

References 36 publications

Optimization of operating conditions for a double-row tapered roller bearing

Optimization of operating conditions for a double-row tapered roller bearing

Evaluation of an FE Model for the Design of a Complex Thin-Wall CFRP Structure for a Scientific Instrument

Finite element nonlinear dynamic analysis of sandwich plates with partially detached facesheet and core

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