Wave propagation on thin‐walled curved elastic plates with truncations

1988 ◽  
Vol 84 (S1) ◽  
pp. S147-S147
Author(s):  
L. B. Felsen ◽  
I. T. Lu
Keyword(s):  
Wave Propagation ◽  
Elastic Plates ◽  
Thin Walled

A characteristic type of instability in the large deflexions of elastic plates III. Curved rectangular plates in axial compression

1954 ◽  
Vol 222 (1148) ◽  
pp. 44-59 ◽  
Keyword(s):  
Axial Compression ◽  
Rectangular Plates ◽  
Bending Moments ◽  
Elastic Plates ◽  
Characteristic Type ◽  
Circular Tubes ◽  
Axis Parallel ◽  
Post Buckling ◽  
Thin Walled ◽  
The Stability

The analysis of part I is extended to deal with the case of free-edged rectangular plates having an initial curvature about an axis parallel to one pair of opposite edges and loaded by distributed bending moments applied to the straight edges and compressive forces applied to the curved edges. In particular, the stability and post-buckling behaviour of such plates subjected to the compressive forces alone is studied. The axially symmetrical buckling of thin-walled circular tubes in axial compression is also considered. Experimental plates are found to buckle at loads rather lower than those predicted.

scholarly journals PROPAGATION OF LOCALIZED VIBRATION MODES ALONG EDGES OF IMMERSED WEDGE-LIKE STRUCTURES: GEOMETRICAL-ACOUSTICS APPROACH

1999 ◽  
Vol 07 (01) ◽  
pp. 59-70 ◽  
Author(s):  
VICTOR V. KRYLOV
Keyword(s):  
Wave Propagation ◽  
Acoustic Waves ◽  
Nonlinear Function ◽  
Experimental Investigations ◽  
Elastic Plates ◽  
Liquid Loading ◽  
Geometrical Acoustics ◽  
Subsonic Regime ◽  
Supersonic Regime ◽  
Elastic Modes

The theory of antisymmetric localized elastic modes propagating along edges of immersed wedge-like structures is developed using the geometrical-acoustics approach to the description of flexural waves in elastic plates of variable thickness. The velocities of these modes, often called wedge acoustic waves, are calculated using solutions of the dispersion equation of the Bohr-Sommerfeld type following from the geometrical-acoustics description of localized wedge modes. In a subsonic regime of wave propagation, i.e. for wedge modes slower than sound in liquid, the influence of liquid loading results in significant decrease of wedge wave velocities in comparison with their values in vacuum. This decrease is a nonlinear function of a wedge apex angle θ and is more pronounced for small values of θ. In a supersonic regime of wedge wave propagation, a smaller decrease in velocities takes place and the waves travel with the attenuation due to radiation of sound into the surrounding liquid. The comparison is given with the recent experimental investigations of wedge waves carried out by independent researchers.

Dynamic Fracture of 6061-T6 Aluminum Cylinders

1977 ◽  
Vol 44 (4) ◽  
pp. 643-646 ◽  
Author(s):  
D. L. Wesenberg ◽  
M. J. Sagartz
Keyword(s):  
Wave Propagation ◽  
Dynamic Fracture ◽  
Capacitor Bank ◽  
Magnetic Pressure ◽  
Strain Rates ◽  
Radial Expansion ◽  
Material Parameters ◽  
Subsequent Fracture ◽  
Thin Walled ◽  
Good Agreement

Radial expansion and subsequent fracture into segments of thin-walled cylindrical shells at large initial strain rates are studied analytically and experimentally. The theory of probability along with a description of relief wave propagation away from each fracture is used to formulate a theory which predicts the number of fractures and the distribution of fragment lengths. Eleven 6061-T6 Aluminum cylinders were expanded at strain rates of ∼104 s−1 by magnetic pressure pulses from a capacitor bank discharge, and these results are compared with predictions. Good agreement is shown between experimental results and predictions. In addition, the physical and material parameters to which the problem is sensitive are discussed.

Theoretical Analysis and Experimental Study on Acoustic Emission Wave Propagation in Perforated Thin-Walled Plate

2013 ◽  
Vol 330 ◽  
pp. 985-990
Author(s):  
Guang Ping Zou ◽  
Meng Chai ◽  
Fang Ren
Keyword(s):  
Experimental Study ◽  
Acoustic Emission ◽  
Wave Propagation ◽  
Stress Concentration ◽  
Nondestructive Test ◽  
Complex Variables ◽  
Acoustic Emission Technique ◽  
Concentration Parameter ◽  
Thin Walled ◽  
Dynamical Stress

Through complex variables function, wave propagation of perforated thin-walled plates is deduced. And it is found out that the dynamical stress concentrates where the concentration parameter vertical to incident orientation is about 1.5, and with the increase of incident wave frequency, holes have less influence on the dynamical stress concentration during wave propagation. With the help of acoustic emission technique, holes do not have much effect on nondestructive test of acoustic emission.

Wave Propagation in a Fluid Contained in a Thin-Walled Elastic Tube

1975 ◽  
Vol 78 (681) ◽  
pp. 758-762
Author(s):  
Takahiko TANAHASHI ◽  
Tsuneyo ANDO ◽  
Hisayoshi MATSUFUJI
Keyword(s):  
Wave Propagation ◽  
Elastic Tube ◽  
Thin Walled
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