Advanced Beaded and Tubular Structural Panels

Musgrove, M. D.; Greene, B. E.; Shideler, J. L.; Bohon, Herman L.

doi:10.2514/3.60325

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Particular emphasis was placed on configuration optimization, fabrication techniques, and end-closure joint requirements. Earlier results from the program are reported 6 and detailed documentation is also available. 7 theory with test data from numerous local buckling specimens and large panels.…”

Section: F^mentioning

confidence: 98%

“…Earlier results from the program are reported 6 and detailed documentation is also available. 7 theory with test data from numerous local buckling specimens and large panels. In some cases, analytical methods were modified to achieve improved agreement with test data.…”

Section: F^mentioning

confidence: 98%

“…circular tubular panel. The panel halves, which were brakeformed, 9 were adhesively bonded together. The panel end closures are reinforced with internal doublers and rivets through the adhesive bond.…”

Section: Test Specimensmentioning

confidence: 99%

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Evaluation of Bead-Stiffened Metal Panels

Shideler

Bohon

Greene

1976

Journal of Spacecraft and Rockets

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Potential weight efficiency for bead-stiffened panels has been demonstrated through fabrication and testing. Theoretically optimum design concepts were identified, and small specimens were tested under combined compression, shear, and bending to determine local buckling failure loads and to verify theory. Large optimized panels were then designed and tested under combined loads. Correlation of test data for large circular tubular panels with theory was conservative and consistent, and indicated reliable and acceptable design theory. Tests of fluted tubular panels indicated general instability failures at loads far below the design values because of nonlinear distortions. Further study of the fluted tubular configuration will be required if its potential weight efficiency is to be attained. Nomenclature F^= compression yield stress N x = panel axial compression load Nxy = panel shear load p = pressure q = heating rate R B ,R C ,R S = ratios of actual stress to critical stress for bending, compression, and shear, respectively T = temperature t = rime p = density

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Section: F^mentioning

confidence: 98%

Section: F^mentioning

confidence: 98%

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Evaluation of Bead-Stiffened Metal Panels

Shideler

Bohon

Greene

1976

Journal of Spacecraft and Rockets

Self Cite

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Raising natural frequencies of a structure via surface-grooving technique

Park

2007

Struct Multidisc Optim

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Design of Corrugated Plates for Optimal Fundamental Frequency

Alshabatat

2016

Advances in Acoustics and Vibration

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This paper investigates shifting the fundamental frequency of plate structures by corrugation. Creating corrugations significantly improves the flexural rigidities of plate and hence increases its natural frequencies. Two types of corrugations are investigated: sinusoidal and trapezoidal corrugations. The finite element method (FEM) is used to model the corrugated plates and extract the natural frequencies and mode shapes. The effects of corrugation geometrical parameters on simply supported plate fundamental frequency are studied. To reduce the computation time, the corrugated plates are modeled as orthotropic flat plates with equivalent rigidities. To demonstrate the validity of modeling the corrugated plates as orthotropic flat plates in studying the free vibration characteristics, a comparison between the results of finite element model and equivalent orthotropic models is made. A correspondence between the results of orthotropic models and the FE models is observed. The optimal designs of sinusoidal and trapezoidal corrugated plates are obtained based on a genetic algorithm. The optimization results show that plate corrugations can efficiently maximize plate fundamental frequency. It is found that the trapezoidal corrugation can more efficiently enhance the fundamental frequency of simply supported plate than the sinusoidal corrugation.

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Advanced Beaded and Tubular Structural Panels

Cited by 8 publications

References 3 publications

Evaluation of Bead-Stiffened Metal Panels

Evaluation of Bead-Stiffened Metal Panels

Raising natural frequencies of a structure via surface-grooving technique

Design of Corrugated Plates for Optimal Fundamental Frequency

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