Pressurized Crack Behavior in Two-Dimensional Rocket Motor Geometries

Francis, E. C.; LlNDSEY, G. H.; Parmerter, R. R.

doi:10.2514/3.61704

Cited by 18 publications

(3 citation statements)

References 2 publications

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“…Elastic fracture analysis of rocket motor geometries has been reported [1,2,3], but realistic material representation and analysis of viscoelastic behavior are not well understood. Cracks that occur in rocket motor grains have three-dimensional geometries and stress fields, where the propellant material encompassing the crack or flaw exhibits nonlinear viscoelastic mechanical behavior.…”

Section: Introductionmentioning

confidence: 99%

“…Analysis of these grain tests with a finite element plane stress solution requires a modification to account for the face pressure. The relationship between experimental conditions with and without face pressure is developed in reference[2], where the side pressure loaded condition K~ 2) is related to the plane stress determined K~ ~ by K~, = KT' (29) B ' B is the side pressure multiplicative factor which relates the two stress fields and is easily evaluated using the equation from reference 2.…”

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confidence: 99%

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Viscoelastic rocket grain fracture analysis

1974

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A B S T R A C T A viscoelastic fracture analysis has been developed for rocket grain fracture predictions. The fracture analysis uses a stress intensity factor technique to predict crack velocity histories under thermal and pressurization loading conditions. The theory is compared with two-dimensional pressurized tests of two typical rocket motor geometries using the viscoelastic material, Solithane 113.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Viscoelastic rocket grain fracture analysis

1974

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“…An excellent discourse on this subject was given by Durelli [1]. Subsequently, Francis et al [2] studied the pressurized crack behavior in a two-dimensional models of cylindrical specimen. Smith el at.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Analysis of Crack in Centrally Perforated Photoelastic Cylinders Under Internal Pressure

Liu

Smith

2004

Fracture Methodologies and Manufacturing Processes

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In this study, the frozen stress photoelastic method was used to investigate the three-dimensional effect on the crack growth behavior in a centrally perforated circular cylinder under internal pressure. The inner surface of the cylinder had a star shape, which consisted of six fins. The specimens were capped at the ends and pressurized internally above critical temperature after real cracks were introduced at the fin tip. After growing to a desired size, the pressure was reduced to stop crack growth and held through cooling. Two different types of cracks, part-through crack and long crack with the crack length nearly equal to the length of the cylinder, were considered. The experimental data were analyzed, and the results are discussed.

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Stress Intensity Distributions Around Surface Flaws in Motor Grain Geometries

Smith

Wang

1991

Fracture of Engineering Materials and Structures

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Pressurized Crack Behavior in Two-Dimensional Rocket Motor Geometries

Cited by 18 publications

References 2 publications

Viscoelastic rocket grain fracture analysis

Viscoelastic rocket grain fracture analysis

Three-Dimensional Analysis of Crack in Centrally Perforated Photoelastic Cylinders Under Internal Pressure

Stress Intensity Distributions Around Surface Flaws in Motor Grain Geometries

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