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Volume 18 (1992)
- Issue 6 Pages 219-
- Issue 5 Pages 177-
- Issue 4 Pages 139-
- Issue 3 Pages 95-
- Issue 2 Pages 55-
- Issue 1 Pages 1-
Volume 18, Issue 3
Displaying 1-6 of 6 articles from this issue
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Hiroshi MUTSUYOSHI1992 Volume 18 Issue 3 Pages 95-101
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
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Yoshihiro FUKUDA1992 Volume 18 Issue 3 Pages 102-105
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
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Hiroo MIYAIRI1992 Volume 18 Issue 3 Pages 106-112
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
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Y. NARITA1992 Volume 18 Issue 3 Pages 113-120
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThis work presents a method of analysis for solving the free vibration of symmetrically laminated composite rectangular plates having any combination of free, simply supported and clamped edges along four sides. This approach uses a Ritz method for the energy functional, and trial functions used for deflections are introduced so as to automatically include geometric boundary conditions for a prescribed boundary. A computer code was developed to calculate natural frequencies and mode shapes for the problem, and was used to demonstrate the effectiveness and accuracy of the present approach.View full abstractDownload PDF (948K) -
T. FUKUDA, K. NAITO, M. MIKI, Y. SUGIYAMA1992 Volume 18 Issue 3 Pages 121-128
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSIt is shown that the principal axis of elasticity (abbreviated to PAE) can be rotated from the structural axis by giving a specific fiber orientation or stacking sequence of a fiber composite beam. The theoretical results for PAE obtained by the use of the laminated plate theory agree with the experimental results for PAE of GFRP and CFRP laminated cantilever beams in the static flexural and torsional tests. It is illustrated from the flexural-torsion analysis and the static test that the angle of torsion at the free end of the beam is zero when the center of gravity of the beam with an eccentric mass coincides with the PAE. The natural frequencies of a beam involving an eccentric mass can be predicted by solving the characteristic equation of a simplified vibration equation of two degree-of-freedom system. The flexural-torsion coupling effects are discussed by using the coupling coefficient in the equation. Solving the vibration equation subjected to the sinusoidal excitation, it is proved that the torsional amplitude of the free end of the beam is zero when the center of gravity is on the PAE. The experimental results of the sinusoidal excitation test agree with the analytical solution of the vibration equation.View full abstractDownload PDF (894K) -
Y. IMAI, I. SHIOTA, Y. SHINOHARA, S. IKENO1992 Volume 18 Issue 3 Pages 129-133
Published: May 15, 1992
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSEvaluation of fiber orientation in short fiber reinforced metals (SFRM) was attempted. An etched surface at transverse cross section to extruded direction was tilted to observe by SEM. Fiber angle distribution was determined by measuring the fiber angles in the photograph. The distribution was expressed by a simple form of Y=100/(1+Xm), and m shows the degree of orientation. This method is easy and reliable to evaluate the fiber orientation in SFRM, and is useful to standardize the evaluation method.View full abstractDownload PDF (2070K)
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