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1989 Vol. 19, No. 3

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EARTH SYSTEM SCIENCE-CHALLENGE AND OPPORTUNITIES
1989, 19(3): 289-303. doi: 10.6052/1000-0992-1989-3-J1989-036
Abstract(1951) PDF(610)
Abstract:
This article gives a brief outline of a new field of scientific investigations, which is being intensively engaged by international scientific community of various disciplines and concerned by the people all over the world,now enti-tled"Earth System Science".Its advent is a consequnce of the urgent need to meet the challenge imposed by the severe crises of the deteriorating fundamental living environment of mankind-the earth's global change. Earth System Sciene regards the earth as an integrate system compo...
THERMOMECHANICS OF NONEQUILfBRIUM AND IRREVERSIBLE PROCESSES ( Ⅱ)
1989, 19(3): 304-319. doi: 10.6052/1000-0992-1989-3-J1989-037
Abstract(2005) PDF(596)
Abstract:
Reconciliation of thermal and mechanical interdependence is made possible by casting away the concept of heat. Defined are the dissipation and available energy density as two mutually exclusive quantities; thermal and mechanical changes become two aspects of the same process that coexist and are in continual operation. This is accomplished by interlacing the rotation, deformation and change in element size into one single operation; irreversibility is embedded inherently into the theory. No a priori assumpt
1989, 19(3): 319-319. doi: 10.6052/1000-0992-1989-3-J1989-038
Abstract(1128) PDF(506)
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PHYSICAL CHARACTERISTICS AND MECHANICAL BEHAVIOUR AT CRACK TIP IN DUCTILE FRACTURE
1989, 19(3): 320-335. doi: 10.6052/1000-0992-1989-3-J1989-040
Abstract(2126) PDF(716)
Abstract:
The ductile fracture characterstics which include crack-tip blunting, and void initiation, growth and its coalescence with voids or blunted crack-tip and the constitutive theories and fracture models for the corresponding physical behaviour are reviewed in this paper.
RECENT DEVELOPMENT OF EXPERIMENTAL TECHNIQUE ON EXPLOSIVE MECHANICS
1989, 19(3): 336-352. doi: 10.6052/1000-0992-1989-3-J1989-039
Abstract(2213) PDF(677)
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Recent developments of experimental and measuring technique on explosive mechanics are summarized in this paper.
1989, 19(3): 352-352. doi: 10.6052/1000-0992-1989-3-J1989-041
Abstract(1496) PDF(699)
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EXPERIMENTAL STUDY OF SURFACE-TENSION DRIVEN CONVECTION
1989, 19(3): 353-364. doi: 10.6052/1000-0992-1989-3-J1989-042
Abstract(1880) PDF(624)
Abstract:
Surface-tension driven convection in liquid bridge is one of the most fascinating subjects in space science in the world today. The paper reviews the origin of the subject and the advances in its experimental study, and published experimental results. Some unsolved problems arc indicated.
A REVIEW ON THE RESEARCH OF DEBRIS FLOW
1989, 19(3): 365-375. doi: 10.6052/1000-0992-1989-3-J1989-043
Abstract(2089) PDF(1031)
Abstract:
The debris flow is a common natural disaster in the mountainous regions. It is a special two-phase fluid. In general, there are two types of debris flows: low-viscous debris flow (where collision and energy dissipation are dominated) and viscous debris flow (where viscosity is dominated) . In this paper, the formation, the classification and the dynamics of debris flow are discussed, some urgent problems are pinpointed, which include the theory of confluent flow and the law of fluid resistance. It is predic...
1989, 19(3): 376-392. doi: 10.6052/1000-0992-1989-3-J1989-044
Abstract(1163) PDF(524)
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1989, 19(3): 393-398. doi: 10.6052/1000-0992-1989-3-J1989-045
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1989, 19(3): 398-431. doi: 10.6052/1000-0992-1989-3-J1989-046
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1989, 19(3): 399-413. doi: 10.6052/1000-0992-1989-3-J1989-047
Abstract(1649) PDF(529)
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1989, 19(3): 414-421. doi: 10.6052/1000-0992-1989-3-J1989-048
Abstract(1439) PDF(555)
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1989, 19(3): 422-431. doi: 10.6052/1000-0992-1989-3-J1989-049
Abstract(1443) PDF(536)
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1989, 19(3): 432-432. doi: 10.6052/1000-0992-1989-3-J1989-050
Abstract(1366) PDF(933)
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