Design and analysis of radially tapered disc springs with parabolically varying thickness

Saini, P. K.; Kumar, Prashant; Tandon, Puneet

doi:10.1243/0954406jmes114

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…This is implemented by building two axisymmetric field outputs, one for σ residual,tan and one for σ residual,rad , in Abaqus/CAE. These output fields will later be used for the computation of σ I,min , σ I,max , σ II,min , and σ II,max according to Equations (24) to (27).…”

Section: Building the Finite Element Modelmentioning

confidence: 99%

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A Novel Algorithm for the Determination of Walker Damage in Loaded Disc Springs

2020

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In this paper, a novel algorithm for the determination of Walker damage in loaded disc springs is presented. The algorithm takes a 3D-scan of a disc spring, measured residual stresses, material parameters, and spring loads as inputs. It outputs a distribution of Walker damage over the surface area of the input disc spring. As the algorithm allows a fully automated determination of the Walker damage, it can be used by disc spring manufacturers to reduce the working time spent on this task by specialized engineers significantly. Compared to spreadsheet applications using analytical formulas and finite element models using idealized geometry, this approach offers a superior description of the stress states in disc springs.

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Section: Building the Finite Element Modelmentioning

confidence: 99%

“…The calculation followed Equations ( 24) and (25). Field outputs describing σ I,min and σ II,min were computed following Equations ( 26) and (27).…”

Section: Example Applicationmentioning

confidence: 99%

A Novel Algorithm for the Determination of Walker Damage in Loaded Disc Springs

2020

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“…Therefore, some help on the study of quasi-zero stiffness isolators has been provided. 5,6 At present, the research on the disc spring is mainly focused on the static design and experimental study based on the load-deflection relationship, 4,[7][8][9] the theoretical basis of which is the pioneering model proposed by Almen and Laszlo. 7 Influenced by Timoshenko, 10 Almen and Laszlo put forward three hypotheses, the first is that the angular deformation of the cross-section is relatively small, the second is that the cross-section remains unchanged at the deflection position, and the third is that the load is uniformly distributed on the circumference.…”

Section: Introductionmentioning

confidence: 99%

Static behavior analysis of disc spring considering variable static friction coefficient

Chen

Yang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The object of this fundamental research will be to reveal the effects of variable coefficient of static friction on the static behavior of disc spring. On account of the complex relationship between friction and normal pressure, based on contact mechanics and fractal theory, a model for predicting variable coefficient of static friction of 3 D fractal surface is induced. Then the method proposed by Curti is improved by using the fractal coefficient of static friction to replace the Coulomb's law. The entire deflection range is considered under quasi-static loading condition. The model of disc spring is developed to predict the load-deflection and hysteresis characteristics while contacting with different fractal surfaces. The primary object of this study is to survey the variable static friction coefficient and its effect on the disc spring. Different fractal dimension, constant static friction coefficient and free height of disc spring are considered, and the relative error of the two methods are calculated. The investigation has revealed that the effect of fractal static friction coefficient on the load-deflection and hysteresis characteristics of disc spring is concentrated in the small deflection stage. And the method is universal for disc springs of different dimension on the same surface.

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“…e calculation relationship between the geometric properties of disc springs and the bearing capacity was also given. Relying on the theoretical research of Rosa and Messina [16] and Saini et al [17], the relationship between the bearing capacity and deformation of disc springs with linear varying and parabolic cross-sections through calculation and analysis, respectively, is investigated. Ozaki et al [18] performed static and dynamic analysis on the friction boundary of disc springs using the numerical method.…”

Section: Introductionmentioning

confidence: 99%

Shock Characteristics of the Opposed Disc Springs (ODS) Shock Isolator with Pretightening under Boundary Friction Condition

Hui

Yan

Zhang³

et al. 2021

Shock and Vibration

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In this study, to solve the problems of shock environment and shock isolation, about which there is still a lack of reasonable description, an isokinetic shock distinguishing method (ISDM), which can quantitatively distinguish between shock and forced vibration state, is presented. And the shock isolation performance of an opposed disc springs (ODS) shock isolator with pretightening under boundary friction condition is investigated. The static and dynamic stiffness properties of the ODS shock isolator are discussed. Relying on ISDM, a shock dynamic model of the ODS shock isolator with pretightening under boundary friction condition is established. The average method is adopted to solve the model theoretically. The shock acceleration ratio (SAR), shock displacement ratio (SDR), and relative displacement ratio (RDR) of the model are calculated using the numerical method and verified by experiments. Both numerical and experimental results show that ISDM is effective. And the effects on isolation efficiency of the number of disc springs, additional supporting force, pretightening force, load, and the shock velocity constant of the ODS shock isolator are discussed, which provide guidelines for its further practical application.

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Design and analysis of radially tapered disc springs with parabolically varying thickness

Cited by 18 publications

References 2 publications

A Novel Algorithm for the Determination of Walker Damage in Loaded Disc Springs

A Novel Algorithm for the Determination of Walker Damage in Loaded Disc Springs

Static behavior analysis of disc spring considering variable static friction coefficient

Shock Characteristics of the Opposed Disc Springs (ODS) Shock Isolator with Pretightening under Boundary Friction Condition

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