| JaLCDOI | 10.18926/15825 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_20_2_55.pdf |
| Author | Taniguchi Takeo| Mitsuoka Kazuhiko| Kajitani Eiji| |
| Abstract | In this study a new automatic mesh generator for 2- dimensional finite element analysis is proposed, and its effectivity is surveyed through a number of test examples. Proposed one is for a micro-computer, and the program is written in BASIC. The user needs no preparation for making finite element model in advance. All of the neccessary informations are displayed on CRT display and its user may answer for questions. It is expected that the cost neccessary for preparing the input-data for finite element analysis is largely decreased. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1986-02-28 |
| Volume | volume20 |
| Issue | issue2 |
| Start Page | 55 |
| End Page | 66 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307353 |
| JaLCDOI | 10.18926/15823 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_20_2_47.pdf |
| Author | Inouye Hiroshi| |
| Abstract | When expressway and roads coexist, it is necessary to establish a reasonable traffic share between them. It may be practiced by the regulation of toll-rate of expressway. But at an occasional traffic congestion, the reasonable share is disturbed, so that some traffic control means should be taken. In this paper, we deal how to control inflows on expressway, from a viewpoint of the optimal share between expressway and roads. The minimization of total travel cost in a system is aimed under traffic equilibrium conditions. The problem is formed as a two-stage programming model, and a simple example solving the problem is showed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1986-02-28 |
| Volume | volume20 |
| Issue | issue2 |
| Start Page | 47 |
| End Page | 53 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307423 |
| JaLCDOI | 10.18926/15822 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_20_2_35.pdf |
| Author | Nago Hiroshi| Maeno Shiro| |
| Abstract | Under the attack of storm waves, there are many destructions of coastal structures in the forms of sinking and sliding. These types of destructions will be in close relation to the dynamic behavior of sand bed around the structures. From this point of view, in this paper, we investigate the characteristics of the pore water pressure and effective stresses in the highly saturated sand bed under oscillating water pressure theoretically. The results indicate that the oscillating water pressure induce the notable drop of strength of sand bed around the structure under certain condition. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1986-02-28 |
| Volume | volume20 |
| Issue | issue2 |
| Start Page | 35 |
| End Page | 45 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307664 |
| JaLCDOI | 10.18926/15818 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_20_2_21.pdf |
| Author | Yamada, Masuo| Ohta, Mutsuo| Sakakibara, Akira| |
| Abstract | A series of small-angle X-ray scattering photographs with monochromated and point focussed copper Ka(1) radiation was taken of a single crystal of an Al-4mass % Cu alloy at the as-quenched state from 823K and at successive stages of ageing at 313K. The crystal was so oriented that the incident direction of the radiation was along [001] axis, and was cooled with liquid nitrogen during the exposure. The pattern of the as-quenched state was homogeneous, but each of the patterns of the aged states consisted of streaks along [100] and [010] directions and a quasi-ring around the trace of the incident beam on the film (even at the shortest ageing time. l6sec). The most intense regions were found in [100], [010] , [100] and [010] directions on the ring. With the progress of the ageing the streaks and the ring became more intense and narrower. The results can be interpreted from points of view of the formation of the GP zones parallel to {100} planes ab initio, the effect of the inter-particle interference on scattering of X-rays, and the growth of the GP zones with the ageing. Guinier radius of the GP zones at each stage can be obtained from intensity change along [110], and the values are reasonably consistent with those obtained from the cross section of the streak. The presence of multi-layer zones, besides the one-layer ones, is suggested from the humps found on several intensity curves along [100] at later stages. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1986-02-28 |
| Volume | volume20 |
| Issue | issue2 |
| Start Page | 21 |
| End Page | 33 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307538 |
| JaLCDOI | 10.18926/15815 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_20_2_1.pdf |
| Author | Miyahara Toshiro| Takahashi Teruo| |
| Abstract | Bubble columns are extensively used in the chemical industry. This paper evaluates the present state of the art on the size of bubbles from a sieve plate and gas holdup, mainly on the basis of the results of the authors, including previous ones. The size of bubbles formed from a sieve plate has an insignificant effect of chamber volume, and gas holdup shows some different behavior, depending on the hole diameter to liquid depth. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1986-02-28 |
| Volume | volume20 |
| Issue | issue2 |
| Start Page | 1 |
| End Page | 20 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307288 |
