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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
- Transactions of the Japan Society of Mechanical Engineers Series C
- Transactions of the Japan Society of Mechanical Engineers Series B
- Transactions of the Japan Society of Mechanical Engineers Series A
Volume 9 (1943 - 1944･･･
- Issue 37-4 Pages 113-
- Issue 37-3 Pages 53-
- Issue 37-2 Pages 103-
- Issue 37-1 Pages 161-
- Issue 36-4 Pages 89-
- Issue 36-2 Pages 69-
- Issue 36-1 Pages 121-
- Issue 35-4 Pages 27-
- Issue 35-3 Pages 23-
- Issue 35-2 Pages 43-
- Issue 35-1 Pages 33-
- Issue 34-4 Pages 1-
- Issue 34-3 Pages 1-
- Issue 34-2 Pages 1-
- Issue 34-1 Pages 1-
Volume 8 (1942)
- Issue 33-4 Pages 215-
- Issue 33-3 Pages 33-
- Issue 33-2 Pages 63-
- Issue 33-1 Pages 185-
- Issue 32-4 Pages 185-
- Issue 32-3 Pages 21-
- Issue 32-2 Pages 53-
- Issue 32-1 Pages 117-
- Issue 31-4 Pages 101-
- Issue 31-3 Pages 1-
- Issue 31-2 Pages 25-
- Issue 31-1 Pages 43-
- Issue 30-4 Pages 1-
- Issue 30-2 Pages 1-
- Issue 30-1 Pages 1-
Volume 19, Issue 79
Displaying 1-14 of 14 articles from this issue
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Masaki WATANABE, Kunihiko SATO, Setuzi MINEHISA1953 Volume 19 Issue 79 Pages 1-6
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSHigh stress concentrations are produced near the flange connection of thin-walled pipes subjected to high internal pressure and under high temperature, because the rigidity of flanges is generally much larger than circular pipes. To give the information of the stress concentrations, stress distributions near the flange connection were obtained elastically, and relations between the stress concentrations and the rigidity of flanges were theoritically determined by using a "Coefficient of Constraint of flange" which depends on shape and dimensions of flanges and pipes. Near the flange connections axial tensile stress is much larger than hoop tension, and the concentration of axial stress gradually increases as the increase of the coefficient of constraint of flange. To verify the theories, deformations of model pipe as shown in fig. 3 under internal hydraulic pressure were measured experimentally by electric wire strain meter, and stresses were calculated by the data. From the results, it was found that the theoritically calculated stress values and experimentally obtained ones show fairly good coincidence.View full abstractDownload PDF (932K) -
Yosikazu SAWABAGI, Masayosi HUKUDA1953 Volume 19 Issue 79 Pages 6-11
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIt is very pertinent to analyze the mechanical property of rubber-like material on the assumption that it can be reduced to a non-linear system having hereditary characteristtcs. In this paper, we discussed the relation between the hereditary theory and the viscous theory and then how hereditary constants and especially frequency characterize the dynamical property of the material.View full abstractDownload PDF (783K) -
Yoshikazu SAWARAGI, Hidekatsu TOKUMARU1953 Volume 19 Issue 79 Pages 12-18
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSPreviously Sawaragi proposed the method of graphical solution for the periodic motion of the vibrational systems with hysteresis characteristics, as a problem of one-degree-of-free-dom. But sometimes the system of two-degrees-of-freedom need to be analysed in practical problems. In this thesis, for such system the method of graphical solution (called "the method by free oscillation" and devised by Sawaragi for the forced vibration of the system with a non-linear restoring force) is developed. We performed the experiment with the model of the laminated spring; and comparing the results of experiment with the calculation by this method, we found that they were practically in sufficient agreement.View full abstractDownload PDF (820K) -
Toshio NISHIHARA, Yoshikazu SAWARAGI, Taizo SAWAMURA1953 Volume 19 Issue 79 Pages 18-23
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the automatic controller with hydraulic servomotor, the pressure 1iquid to pilot valve is throttled frequently in order to prevent the hunting. Authers carried out experiments and analysis to give a theoretical basis to this preventive method. And the following were concluded : As to the steady oscillation due to the saturating characteristic of pilot valve, its frequency is equal to the frequency of linear control system at critical stable state, and its amplitude is proportional to the ordinate of intersecting point of saturating characteristic curve and critical stability line of linear control system. Therefore, inversely utilizing above conclusion we can practise this preventive method against hunting rationally.View full abstractDownload PDF (849K) -
Toshio NISHIHARA, Yoshikazu SAWARAGI, Taizo SAWAMURA1953 Volume 19 Issue 79 Pages 23-27
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the case where the effect of solid friction and inertia is studied at the same time, it is very difficult to solve the problem by the analytical method using differential equations. In such a case, it is effective to apply the vector locus which is obtained by means of approximate linearization of the non-linear element with solid friction. But the method of linearizing used hitherto does not bring exact results. It is especially so in the case of stop motion. Therefore, authors drew the vector locus utilizing Hartog's exact solution, and could obtain excellent results. In this paper, their method is explsined and the effect of solid friction on the stability of control system is considered.View full abstractDownload PDF (728K) -
Hiroshi NAKASHIMA1953 Volume 19 Issue 79 Pages 27-29
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe author treats through an approximate method the natural vibrations of the conical coil springs which have the Archimedes' spiral in their planes. The conditions of approximation are shown by two items neglecting the effect of the helical angle and supposing the wire of spring to be fine enough as compared with the radius of the coil, just as in the equation of motion in the natural vibrations of cylindrical coil springs. So a partial differential equation is to be made by the author for the natural vibrations in the direction of coil axis which are produced only by the torsion of a fine spring wire, and to be treated in connection with its solution when the boundary conditions are as follows : (1) both ends are fixed, (2) one end is fixed and the other end free. The results are obtained that the natural frequencies of conical coil springs have been calculated in proportion to the ratio of the small end radius of coil to the large end one, and several forms of the normal mode of vibrations have been shown in both cases respectively.View full abstractDownload PDF (455K) -
Fumiki KITO1953 Volume 19 Issue 79 Pages 30-35
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe consider a thin shell of elastic material whose middle surface forms a circular cylinder. This shell is subjected to an internal (or external) pressure, its magnitude varying uniformly along the axial distance of the cylinder. Starting from the theory of shell, and applying so-called Galerkin's method, it is shown that for practical purpose of obtaining natural frequency of the shell, we may regard it to be under the action of mean uniform pressure.View full abstractDownload PDF (703K) -
A Study on Rectangular Elastic Body with Lateral Pressure, Compressed Between Two Rough Rigid PlatesKaneichiro IMAI1953 Volume 19 Issue 79 Pages 36-42
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSPreviously the author made a study on hollow thick cylinder of finite length compressed between two rough rigid bodies considering internal and external pressure. Assuming the radius of cylinder to be large enough compared to the thickness and the method of plane stress and strain applicable to this case, he studies in this paper a beam under conditions as shown in the title. Solution to this problem can be reached by using stress function (equ.2), with boundary conditions of chapt.2.Numerical calculations for the following cases are also attached : (i) Behaviour of the ratio of true and apparent Young's modulus when width and height ratio changes as in Fig.2.(ii) Stresses for the case height equals 2π, thickness equals 2×18 under the following conditions.(a) With pure axial compression. (b) Without axial compression; with lateral compression. (c) With axial and latera1.compression.View full abstractDownload PDF (672K) -
Sigemasa IWATO, Masanobu ODA1953 Volume 19 Issue 79 Pages 43-48
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis report is a sequel of the last announcement and treats the numerical calculation of the lateral buckling load of a thin deep beam, subjected to an axial load. Using the energy method, the authors have determined the approximate buckling load of a cantilever, a builtin beam, and also a simply supported beam, whose cross section is variable and symmetrical to the middle point of the span. The approximate buckling load [numerical formula] where m is a numerical factor depending upon the axial load and Euler's load of the beam.View full abstractDownload PDF (574K) -
Takashi YAMASHIDA1953 Volume 19 Issue 79 Pages 49-51
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSFor the problem of distribution of stresses in a semi-infinite strip lying along the axis of x under the forces applied on the opposite surfaces of the strip near the end (in Fig.1), using the solution proposed by Prof.S. Higuchi, we have calculated Xx numerically along the depth of the strip. Since the condition of the present problem is similar to the actual problem of a long beam or plate clamped at its end, and, moreover stress Xx treated by us may frequently be considered as it relates mainly to the phenomena of failure, so that the work to find the distribution of stresses in question numerically which is left for us untouched, may be said to be important from the technical standpoint.View full abstractDownload PDF (440K) -
Heihachi SHIMADA, Fujio KOIZUMI1953 Volume 19 Issue 79 Pages 51-53
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSUsing the photo-elastic method, the factor of stress concentration for a plate, having rectangular notches symmetrically on its opposite two sides under a uniform tension was studied. Test pieces examined are made of phenolite, having 38 sorts of rectangular notches. The results of the experiment are summarized as follows : (1) The maximum stress concentration occurs at the joining part of the re-entrant corner and the bottom of the notch. (2) The factor of stress concentration k for this case increases gradually as the breadth h of the notch decreases. (3) When h is constant, the values of k changes with the depth d of the notch, having the maximum at a certain value of d.View full abstractDownload PDF (597K) -
Koichi SAITO1953 Volume 19 Issue 79 Pages 53-58
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe stresses and strains in plastically bent plates were analyzed by the author as a problem of plane strains and triaxial stresses. The first part of the investigation was reported already in the Transactions of the Japan Society of Mechanical Engineers, Vol. 16, No. 53, 1950, p.133. In the present paper, the results of the experiments to ascertain the theories and their applications to engineering designs are reported. The experiments were carried out to find the relation between tensile and bending tests of the carbon-steel plates. The results of the experiments agreed very well with those of the theoretical calculations. For the experiments, the author designed a new equipment for bending tests. The theoretical bend allowances of the plates agreed with the engineering experiments. Hence the author has drawn the theoretical bend allowance diagram for engineering use.View full abstractDownload PDF (771K) -
Takeo YOSHIZAWA, Yoshiro NAKAMURA1953 Volume 19 Issue 79 Pages 58-59
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn order to investigate the range, in which the law of similarity on Vickers hardness is held, the measurement of Vickers hardness of carbon steel and duralumin was taken place under the light loads of 50∼1000g, with attention to the errors due to the work-hardning of test surfaces and the inertia effect of moving parts of the machine. It was acertained that the law of similarity was still held under the 50g load, and that the best method for finishing the test specimens was polishing by electrolysis and the next method by cloth while pouring the cooling material as ether or acetone.View full abstractDownload PDF (423K) -
Yuichi KAWADA, Hajime FUJII1953 Volume 19 Issue 79 Pages 60-64
Published: March 30, 1953
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe mechanically amplified strain-meter which was devised by one of the authors has been so improved as to maintain its validity even if there is a little vibration in parts for which strain is to be measured. The new strain-meter is such one as having the gauge length of 5mm long, magnification of 1000 : 1, one division of the strain-meter showing the strain of 10-4. The strain-meter was used successfully to measure strains produced by electric are welding in a plate. It was found that about twice as much stresses are induced in a plate immediately after the welding as those induced in the same plate but sufficiently after the welding.View full abstractDownload PDF (683K)
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