Contact stress of O-ring under uniform squeeze rate by photoelastic experimental hybrid method

Nam, Jong-Ho; Hawong, Jai-Sug; Han, Songling; Park, Sung-Han

doi:10.1007/s12206-008-0915-6

Cited by 30 publications

(10 citation statements)

References 9 publications

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“…It is interesting to note that to the best knowledge of the authors a synergy of both photoelastic experimental hybrid method and weight functions has not been applied where quantitative values of contact and interior stresses of structures have been determined. For example to determine the contact stresses of an O‐ring, the photoelastic hybrid method was applied without use of weight functions .…”

Section: Resultsmentioning

confidence: 99%

Use of weight functions and photoelastic experimental hybrid method to study the contact problem

Mose

Maranga

Alunda

et al. 2015

Mat.-wiss. u. Werkstofftech

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The contact problem involving flat punches has been the subject of many investigations mainly due to the crucial role it plays in many engineering applications. The contact problem has however, been widely approached from a theoretical point of view and there is a lack of experimental verifications due to the limited number of laboratory techniques capable of supplying detailed information about contact parameters. In order to gain an understanding of such problems, this study uses an experimental approach to investigate the stresses arising from photoelastic models when compressed against each other using Riemann‐Hilbert's weight functions and photoelastic experimental hybrid method. The study shows that this approach is effective in determining the magnitudes of contact stresses as well as interior stresses which up to date have been scarcely investigated. It is further shown that high stresses exist when a photoelastic model with a sharp corner is pressed against straight surface of the bottom half space and by introducing fillet radii at the sharp corners, significant stress reductions of up to 62.66% is observed.

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Section: Resultsmentioning

confidence: 99%

Use of weight functions and photoelastic experimental hybrid method to study the contact problem

Mose

Maranga

Alunda

et al. 2015

Mat.-wiss. u. Werkstofftech

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“…The photoelastic experimental hybrid method using the internal traction free condition or external traction free condition has been already developed. [7,8,11] The loading condition of this study is the restrain condition for the contact between the O-ring and cylinder as shown in Fig. 1.…”

Section: Stress Componentsmentioning

confidence: 99%

“…In this study, the stresses of the O-ring under the first loading condition or the second loading condition were investigated [7]. The stresses of the O-ring under the third loading condition have not been studied.…”

Section: Introductionmentioning

confidence: 99%

A study on the analysis of O-ring under uniform squeeze rate and internal pressure by photoelastic experimental hybrid method

et al. 2009

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There are three kinds of loading conditions applied to the O-ring, The first loading condition is the case in which uniform squeeze rates are applied to the upper side and the lower side of the O-ring (the strain condition). The second loading condition is the case in which uniform squeeze rates are applied to the upper side and the lower side of the Oring and other squeeze rates are applied to the front side of the O-ring. The third loading condition is the case in which uniform squeeze rates are applied to the upper side and the lower side of the O-ring, other squeeze rates are applied to the front side of the O-ring, and internal pressures are applied to another front side of the O-ring(loading condition is the combination of stress condition and the strain condition). In this research, a new photoelastic experimental hybrid method under the third loading condition was developed and it was verified. The stresses of the O-ring under the third loading condition were analyzed by the new photoelastic experimental hybrid method developed in this research. The internal pressures applied to the O-ring were 0.98 MPa, 1.96 MPa, 2.94 MPa and 3.92 MPa.

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“…Digital photoelasticity has been successfully applied to understand the load transfer behaviour in a wide variety of problems spanning from mechanical contacts to biomechanics and granular materials. [ 11–17 ] In spite of the potential of optical techniques to investigate the real development and distribution of strains in complex problems, techniques like digital photoelasticity [ 18,19 ] to study the load transfer behaviour in masonry have been scarcely explored. The potential of photoelastic stress analysis of masonry has been demonstrated by Blasi and Pecchioli [ 20 ] only in 1981.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of dry stone masonry walls using digital reflection photoelasticity

Kumar

Hariprasad

Menon

et al. 2020

Strain

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Response of dry stack stone masonry walls under mechanical loading is complex and difficult to determine, mainly due to heterogeneous and discrete nature of the components of the stone wall. In this paper, reflection photoelasticity is used on scaled down models of stone masonry wall under uniaxial compression. Two walls are tested, and the methods to obtain near perfect dry stack masonry for reflection photoelastic studies are presented. Five‐step phase‐shifting methods are employed with TFP/RGB photoelasticity to quantitatively analyse the mechanical behaviour of the dry stack masonry walls. Isochromatics and isoclinic data are processed to obtain other whole field experimental stress data. Highly stressed zones are observed resulting in distinctive localised vertical failure in some of the stone units. In dry stack masonry construction, the failure mechanism is found to be dictated by the contact mechanics, which are governed by the non‐uniformity of block geometry even in very regular dry stack masonry.

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Contact stress of O-ring under uniform squeeze rate by photoelastic experimental hybrid method

Cited by 30 publications

References 9 publications

Use of weight functions and photoelastic experimental hybrid method to study the contact problem

Use of weight functions and photoelastic experimental hybrid method to study the contact problem

A study on the analysis of O-ring under uniform squeeze rate and internal pressure by photoelastic experimental hybrid method

Experimental study of dry stone masonry walls using digital reflection photoelasticity

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