Analysis of prismatic springs of non-circular coil shape and non-prismatic springs of circular coil shape by analytical and finite element methods

Chaudhury, Arkadeep Narayan; Datta, Debasis

doi:10.1016/j.jcde.2017.02.001

Cited by 10 publications

(6 citation statements)

References 7 publications

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“…Spring. Finite element method is widely used in stress analysis of springs ( [1,9,13,14]). is paper uses ABAQUS to construct a finite element simulation model of recoil spring impact characteristics in accordance with the multi-wire recoil spring characteristic curve and actual operating conditions, to analyze the dynamic characteristics of displacement, velocity, acceleration, stress, and strain of recoil spring under impact load.…”

Section: Finite Element Model Of Impact Characteristics Of Recoilmentioning

confidence: 99%

Impact Characteristics and Fatigue Life Analysis of Multi-Wire Recoil Spring for Guns

Wei

Xiao-lian²,

Hu³

et al. 2020

Shock and Vibration

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Recoil spring is a key part in automatic or semi-automatic weapons re-entry mechanism. Because the stranded wire helical spring (SWHS) has longer fatigue life than an ordinary single-wire cylindrically helical spring, it is often used as a recoil spring in various weapons. Due to the lack of in-depth research on the dynamic characteristics of the current multi-wire recoil spring in recoil and re-entry processes, the fatigue life analysis of the current multi-wire recoil spring usually only considers uniform loading and does not consider dynamic impact loads, which cannot meet modern design requirements. Therefore, this paper proposes a research method for fatigue life prediction analysis of multi-wire recoil spring. Firstly, based on the secondary development of UG, a three-wire recoil spring parameterized model for a gun is established. Secondly, ABAQUS is used to carry out a finite element analysis of its dynamic response characteristics under impact, and experimental verification is performed. Then, based on the stress-time history curve of the dangerous position obtained by finite element analysis, the rain flow counting method is used to obtain the fatigue stress spectrum of recoil spring. Finally, according to the Miner fatigue cumulative damage theory, the fatigue life prediction of the recoil spring based on the S-N curve of the material is compared with experimental results. The research results show that the recoil spring has obvious transient characteristics during the impact of the bolt carrier. The impact velocity is far greater than the propagation speed of the stress wave in the recoil spring, which easily causes the spring coils to squeeze each other. The maximum stress occurs at the fixed end of the spring. And the mean fatigue curve (50% survival rate) is used to predict the life of the recoil spring. The calculation result is 8.6% different from the experiment value, which proves that the method has certain reliability.

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Section: Finite Element Model Of Impact Characteristics Of Recoilmentioning

confidence: 99%

Impact Characteristics and Fatigue Life Analysis of Multi-Wire Recoil Spring for Guns

Wei

Xiao-lian²,

Hu³

et al. 2020

Shock and Vibration

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“…Numerical methods, such as the finite element method, have been applied in previous research to design helical springs that eliminate the limitations of the theoretical and experimental methods in the calculation and measurement of the maximum stress in the different sections of the spring [19- In the case of extension springs, the orientation of the top and bottom hooks has generally not been discussed sufficiently in previous publications [10][11][12][13]. Illustrations often show that the two hooks are in opposing directions [5,14].…”

Section: Introductionmentioning

confidence: 99%

“…In the case of extension springs, the orientation of the top and bottom hooks has generally not been discussed sufficiently in previous publications [ 10 , 11 , 12 , 13 ]. Illustrations often show that the two hooks are in opposing directions [ 5 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, one of the hypotheses is that orientation of the hooks in the same plane will have an adverse effect on the stress distribution (lopsided stress distribution), resulting in higher stress values [ 15 ]. Previous publications [ 9 , 10 , 11 , 12 , 13 , 16 , 17 , 18 ] have not mentioned the correlation between hook orientation and the number of coils (

) against the stress correction factor.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the Curvature Correction Factor of Extension Spring

et al. 2020

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The curvature correction factor is an important parameter in the stress calculation formulation of a helical extension spring, which describes the effect of spring wire curvature on the stress increase towards its inner radius. In this study, the parameters affecting the curvature correction factor were investigated through theoretical and numerical methods. Several finite element (FE) models of an extension spring were generated to obtain the distribution of the tensile stress in the spring. In this investigation, the hook orientation and the number of coils of the extension spring showed significant effects on the curvature correction factor. These parameters were not considered in the theoretical model for the calculation of the curvature correction factor, causing a deviation between the results of the FE model and the theoretical approach. A set of equations is proposed for the curvature correction factor, which relates both the spring index and the number of coils. These equations can be applied directly to the design of extension springs with a higher safety factor.

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“…Case studies considering the structural analysis of such springs using finite-element analysis (FEA) have been proposed to solve this design problem [3][4][5][6]. This method allows the designer to visually confirm and design these springs considering the stress and displacement that locally occur in the spring.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of Torsion Springs Using NURBS Curves

Kim

Song²,

Jeon

2020

Applied Sciences

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Torsion springs, which transfer power through the twisting of their coil, provide advantages such as module simplification and efficient use of space. The design of a torsion spring has been formulated, but it is difficult to determine the local behaviors of torsion springs according to actual load conditions. This study proposes a torsion-spring design method through finite element analysis (FEA) using nonuniform-rational-basis-spline (NURBS) curves. Through experimentation, the angle and displacement values for the actual spring load were converted into useable data. Torsion-spring displacement values were obtained via experimentation and converted into coordinates that may be expressed using NURBS curves. The results of these experiments were then compared to those obtained via FEA, and the validity of this method was thereby verified.

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Analysis of prismatic springs of non-circular coil shape and non-prismatic springs of circular coil shape by analytical and finite element methods

Cited by 10 publications

References 7 publications

Impact Characteristics and Fatigue Life Analysis of Multi-Wire Recoil Spring for Guns

Impact Characteristics and Fatigue Life Analysis of Multi-Wire Recoil Spring for Guns

Investigation on the Curvature Correction Factor of Extension Spring

Numerical and Experimental Analysis of Torsion Springs Using NURBS Curves

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