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SOME PROBLEMS OF ENGINEERING MECHANICS IN THREE GORGES PROJECT

1994, 24(4): 433-440. doi: 10.6052/1000-0992-1994-4-J1994-040

Abstract(2148)

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Abstract:
This paper gives a brief account of the Three Gorges key water control project, the main technical difficulties in construction,as well as some important problems of engineering mechanics, including fluid mechanics,solid mechanics,two-phase flow and explosion mechanics etc. New problems of rock(rock masses)mechanics concerned with the Three Gorges Project are reviewed here,Geotechnical engineering in a large-scale is ahuge and complicated system and rock(rock masses)mechanics is related with avariety of dis...

MOISTURE TRANSFER THROUGH BUILDING STRUCTURES

1994, 24(4): 441-458. doi: 10.6052/1000-0992-1994-4-J1994-041

Abstract(1326)

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Abstract:
moisture transfer; Porous building material; interstitialcondensation

LOADING AND MEASURING TECHNIQUES INDYNAMIC FRACTURE TESTING

1994, 24(4): 459-475. doi: 10.6052/1000-0992-1994-4-J1994-042

Abstract(1694)

PDF(1065)

Abstract:
Somc experimental techniques for dynamic fracture are reviewed. Abrief discussion on their applieations in the studies on dynamic fracture pro-perties of materials is made.

VISCOUS FINGERING IN POROUS MEDIAAND ITS FRACTAL NATURE

1994, 24(4): 476-482. doi: 10.6052/1000-0992-1994-4-J1994-043

Abstract(2394)

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Abstract:
In this paper, first of all, a review is madc on some importantachievements in the studies of viscous fingering phenomena in literature, toge-ther with a iiscussion on the simulation with Hele-Shaw device and in the bedof three-dimensional porous media. Consequently, the basic concepts of fractaland its applications in the studies of viscous fingering phenomena in recentyears are introduced. Finally, some suggestions for the research on viscousfingering and fractal are made.

SOME SUGGESTIONS ON ENGINEERING TURBULENCERESEARCHES IN OUR COUNTRY

1994, 24(4): 483-488. doi: 10.6052/1000-0992-1994-4-J1994-044

Abstract(1724)

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Abstract:
s This paper contains threc parts: 1. the background of engineeringturbulence researches; 2. the characterestics of the engineering turbulenceresearch; 3. some suggestions on engineering turbulence researches, which includea) the identification and application of the concept of turbulence, b) the app-lication and improvement of turbulence models, c) the turbulence measurernentsand d) the turbulence control.

METHODS AND CHALLENGE IN STRUCTURAL WAVE CONTROL

1994, 24(4): 489-498. doi: 10.6052/1000-0992-1994-4-J1994-045

Abstract(1821)

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Abstract:
This paper summarizes the background,methods and results concerning the study of Wave control based upon the large space structures in recent years,and overviews some prospects for a few basic problems in structural wave control

INTELLIGENT MATERIALS AND STRUCTURESCAPABLE OF ACTIVELY DETECTING CRACKAND CONTROLLING CRACK GROWTH

1994, 24(4): 499-510. doi: 10.6052/1000-0992-1994-4-J1994-046

Abstract(1685)

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Abstract:
A new method and technique is presented in this paper that utilizingthe unique mechanical properties and physical function of Shape MemoryAlloys-NiTi alloy which are embedded in the component to detect crack andactively control the crack growth. This is what engineers and technicians havelong craved for. The experimental and calculation results show that the newmethod and technique is rational and the effect is significant.

THE DEVELOPMENT OF THE PARALLELCOMPUTATIONAL STRUCTURAL MECHANICS

1994, 24(4): 511-517. doi: 10.6052/1000-0992-1994-4-J1994-047

Abstract(2110)

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Abstract:
in this paper, a brief review is made on the parallel analyticmethod of the structural mechanics. At the same time, some future researchtendencies in this field are discussed. It is shown that the parallel computersand parallel algorithms will become important and very effective methods in thefuture scientific and engineering fields.

ROCK-SLOPE ENGINEERING AND SOLOD MECHANICS

1994, 24(4): 518-524. doi: 10.6052/1000-0992-1994-4-J1994-048

Abstract(1784)

PDF(1048)

Abstract:
Some recent works on solid mechanics for rock-slope engineering have been stirnmarized.The present paper gives some discussions on the following investigations:Theoritical and experimental research on constitutive model of rockmass; Displacement and stability analysis of rock-slope;Inverse analysis of material properties by displacements of rock-slope.

NONLINEAR DYNAMICS OF VISCOUS FLOWS PAST A CIRCULAR CYLINDER

1994, 24(4): 525-546. doi: 10.6052/1000-0992-1994-4-J1994-049

Abstract(1801)

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Abstract:
In this paper the problem of two-dimensional viscous flows past a circular cylinder is studied by making use of the concepts and methods of non-linear dynamics.The critical Reynolds numbers for a steady flow to becomeunstable,and for chaos to appear are computed,and some statistical charac- teristics of chaotic solutions are evaluated.

ON THE APPLICATIONS AND DERIVATIVES CALCULATIONOF AERODYNAMIC SENSITIVITY ANALYSlS

1994, 24(4): 547-558. doi: 10.6052/1000-0992-1994-4-J1994-050

Abstract(1594)

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Abstract:
Applications of aerodynamic sensitivity analysis in multidisciplinaryoptimization for aircraft design are reviewed briefly. The recent advances inthe calculation of aerodynamic sensitivity derivatives are cmphasized. Futureurgent researches are suggested.

A Review on the Researches of Ship Collision

1994, 24(4): 547-558. doi: 10.6052/1000-0992-1994-4-J1994-051

Abstract(4956)

PDF(1719)

Abstract:
This paper gives an overview on the researches of the ship collision,including both theoretical and experimental aspects.The emphasis is placed onthe full-scale ship collision test.The rnain steps,the choice of parameters andthe choice of the site on the full-scale test are discussed.At last,a generalcomment on the sttidies of ship collision is given.

1994 Vol. 24, No. 4

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