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171.
172.
Y. Tanigawa Prof. Y. Takeuti Assc. Prof. N. Noda 《Archive of Applied Mechanics (Ingenieur Archiv)》1983,53(5):317-327
Summary In this paper, we study the three-dimensional coupled thermoelastic problem governed by the cylindrical coordinate system under the consideration of the thermo-mechanical coupling effect. The basic relations for the three-dimensional displacement field and the corresponding stress components are derived from the field equations of motion. These expressions enable us to determine both the temperature and the stress distributions simultaneously. As an illustration, numerical calculations are carried out for an axisymmetrical coupled thermoelastic problem. From the numerical results it is shown that the thermomechanical coupling term appearing in the corrected heat conduction equation gives a fairly large difference between the coupled theory and the uncoupled one.
Zur allgemeinen Behandlung gekoppelter Wärmespannungsprobleme in Zylinderkoordinaten
Übersicht Es wird das dreidimensionale Wärmespannungsproblem unter Berücksichtigung der thermomechanischen Kopplung untersucht. Ausgehend von den Bewegungsgleichungen werden Temperatur und Spannungen angegeben. Zur Illustration der Methode wird ein axialsymmetrisches Problem numerisch behandelt und der Einfluß der thermo-meehanischen Kopplung auf die Wärmeleitgleichung gezeigt.相似文献
173.
174.
The sequential Jahn-Teller phase transitions in Cs2PbCu(NO2)6 were studied by neutron and X-ray diffraction technique. In each phase we observed satellite reflections. The position of satellites in the reciprocal space is commonly given by with In Phase II and Phase IV, the values of ζ are definitely determined as ζ = 0 and ζ = 0.5 respectively. In Phase III, ζ is not definite within depending on samples, thermal cycling,etc. Phase III may be an incommensurate phase although there is the tendency that the value of ζ is locked in either at 0.20 () or at 0.25 (). 相似文献
175.
The successive phase transitions in K2PbCu(NO2)6 has been studied by precise X-ray measurements. The unit cell in Phase III is doubled along each of the cubic principal axes. The experimental results can be interpreted as sequencial cooperative Jahn-Teller transitions where the higher transition is due to the coupling with the uniform distortion, while the lower transition is caused by the coupling with the uniform distortion, while the lower transition is caused by the coupling with the zone boundary phonon mode with . The electronic state in Phase III is characterized as the “canted pseudospin” state. 相似文献
176.
177.
F. W. McLafferty J. Okamoto H. Tsuyama Y. Nakajima T. Noda H. W. Major 《Journal of mass spectrometry : JMS》1969,2(7):751-753
Measurement of metastable ion abundances over a dynamic range of 105 is possible with a specially designed mass spectrometer. 相似文献
178.
Ohyabu N Ida K Morisaki T Narihara K Komori A Watanabe K Narushima Y Nagayama Y Shoji M Ashikawa N Emoto M Funaba H Goto M Idei H Ikeda K Inagaki S Inoue N Isobe M Khlopenkov K Kobuchi T Kostrioukov A Kubo S Kumazawa R Liang Y Masuzaki S Minami T Miyazawa J Morita S Muto S Mutoh T Murakami S Nakamura Y Nakanishi H Nishimura K Noda N Notake T Ohkubo K Ohdachi S Oka Y Osakabe M Ozaki T Peterson BJ Sakamoto R Sakakibara S Sagara A Saito K Sasao M Sato K Sato M Seki T Shimozuma T Sudo S Suzuki H 《Physical review letters》2002,88(5):055005
In the Large Helical Device plasma discharges, the size of an externally imposed island with mode number ( n/m = 1/1) decreases substantially when the plasma is collisionless ( nu(*)< approximately 1) and the beta is finite ( > approximately 0.1%) at the island location. For the collisional plasmas with finite beta, on the other hand, the size of the island increases. However, there is a threshold in terms of the vacuum island size below which the island enlargement is not seen. 相似文献
179.
Arumugam S Môri N Takeshita N Takashima H Noda T Eisaki H Uchida S 《Physical review letters》2002,88(24):247001
We have investigated the pressure effect on T(c) and the Hall coefficient in the static stripe-ordered phase of La(1.48)Nd(0.4)Sr(0.12)CuO(4) crystal under hydrostatic pressure. We found a dramatic change of the Hall coefficient and an abrupt increase of T(c) at low pressure of about 0.1 GPa. The results are indicative of a transition from one- to two-dimensional charge transport, associated with the suppression of low-temperature-tetragonal (LTT) phase. From the uniaxial pressure measurements it turns out that the observed critical change is induced primarily due to the in-plane compression of the CuO(2) planes which would make the pinning potential of the LTT lattice distortions weaker. 相似文献
180.
The c-axis far-infrared reflectivity spectra in the superconducting state were investigated for La1.85-yNd(y)Sr0.15CuO4. The Josephson plasma edge rapidly shifts towards lower frequency with increasing y, and almost disappears when y exceeds a critical value ( y(c) approximately 0.12) above which the low-temperature-tetragonal (LTT) deformation switches on, stabilizing the spin/charge ordered stripe phase. In the vicinity of y(c), a "normal state" reentrant behavior was observed with lowering temperature below Tc. This clearly demonstrates that the static stripe order pinned by the LTT distortion suppresses the interlayer phase coherence. 相似文献