A theoretical and experimental study of hemispherical shells subjected to axial loads between flat plates

Kitching, R.; Houlston, R.; Johnson, William B.

doi:10.1016/0020-7403(75)90072-7

Cited by 66 publications

(36 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For unpressurised table tennis balls with a thin shell it occurs for c /h  2.0 -2.3 [13,14]. For the "rubber ball" the wall thickness is much bigger and so the critical deflection is expected to be bigger.…”

Section: Deformation Of a Hollow Elastic Spherical Shellmentioning

confidence: 99%

Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Schoenwald¹,

Zeitler²,

Nightingale³

2011

Acta Acustica united with Acustica

View full text Add to dashboard Cite

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.3813/AAA.918439 Acta Acustica United with Acustica, 97, 4, pp. 590-598, 2011-07-01 Prediction of the blocked force at impact of Japanese rubber ball source Schoenwald, S.; Zeitler, B.; Nightingale, T. R. T. Abstract: Characterizing and rating the impact sound isolation of floors and of building structures are important issues in building acoustics. In all standardized test procedures a floor specimen is excited structurally with a standardized impact source and the sound pressure level due to the impact is measured in an adjacent room. Existing standards define several impact sources that should simulate the excitation due to persons walking or jumping on the floor and hence exert only normal forces to the structure. However, the excitation spectrum of the most commonly used lightweight tapping machine according to ISO 140-7 differs significantly from the heavy impact sources according to JIS A 1418-2 (the "rubber ball" and the "bang machine" that are dropped from a defined height to the floor). In order to accurately predict the impact sound isolation of floor assemblies, the excitation mechanism due to impacts from these heavy sources has to be understood and implemented in prediction models. This paper presents a simple analytical model for the "rubber ball" heavy impact source and the suitability of the model is gauged by comparing the predicted blocked force with experiment. Pre dic t ion of t he bloc k e d forc e a t im pa c t of J a pa

show abstract

Section: Deformation Of a Hollow Elastic Spherical Shellmentioning

confidence: 99%

Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Schoenwald¹,

Zeitler²,

Nightingale³

2011

Acta Acustica united with Acustica

View full text Add to dashboard Cite

show abstract

“…The more close the assumed fields are to the real one, the better the approximate solution is. A considerable success of thi methcd in predicting the crush behavior of various thin-walled structures (see [7,15])…”

Section: Determination Of the Crushing Forcementioning

confidence: 99%

Crushing analysis of rotationally symmetric plastic shells

Oliveira

Wierzbicki

1982

The Journal of Strain Analysis for Engineering Design

View full text Add to dashboard Cite

show abstract

“…The collapse mode of a spherical shell under axial compression can be divided into axi-symmetric dimpling and multiple lobes mode when the compression displacement is smaller than half the shell radius (Kitching, 1975). Final collapse modes of shells with different R/t values under compression displacement larger than half the shell radius are presented in Fig.…”

Section: Final Deformation Modesmentioning

confidence: 99%

“…The predicted analysis results were restricted to the overall displacements between a few thicknesses and approximately one-tenth of the shell radius (Stage II). Moreover, an extensive theoretical and experimental investigation was made into this problem by Kitching et al (1975). Deformation patterns that are symmetric and non-symmetric about the axis were also studied analytically and experimentally for spherical shells with radius-tothickness (R/t) ratios that range between 36 and 460.…”

Section: Introductionmentioning

confidence: 99%

Peripheral Deformation and Buckling of Stainless Steel Hemispherical Shells Compressed by a Flat Plate

Yang

et al. 2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

An experimental investigation was performed on stainless steel hemispherical shells under axial compression. Eight kinds of shells with radius-to-thickness ratios that range from 57.1 to 125 were designed and manufactured for this study. The shells were compressed to more than 50% of their radii by a solid flat plate. To avoid contact between the base plate and the deformed central part of the shells, most of the shells were placed on a plate with a hole in the center. Nonetheless, one type of shell was placed on a solid base plate without a hole to analyze the effect of the base plate. As per an observation of collapse modes and loaddeformation shell relations, the deformation process of a hemispherical shell that is compressed by a flat plate can be divided into four stages: local flattening (Stage I), axi-symmetric inward dimpling (Stage II), non-symmetric multiple lobes (Stage III), and peripheral deformation and buckling stage (Stage IV). The present study mainly studies Stage IV, which can be categorized into peripheral compression (Stage A), peripheral buckling (Stage B), buckling expanding (Stage C), and overall collapse (Stage D).

show abstract

A theoretical and experimental study of hemispherical shells subjected to axial loads between flat plates

Cited by 66 publications

References 7 publications

Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Prediction of the Blocked Force at Impact of Japanese Rubber Ball Source

Crushing analysis of rotationally symmetric plastic shells

Peripheral Deformation and Buckling of Stainless Steel Hemispherical Shells Compressed by a Flat Plate

Contact Info

Product

Resources

About