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1995 Vol. 25, No. 2

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STATISTICAL MESO-SCOPLC DAMAGE MECHANICS AND DAMAGE EVOLUTION INDUCED CATASTROPHE
1995, 25(2): 145-173. doi: 10.6052/1000-0992-1995-2-J1995-023
Abstract(1746) PDF(2160)
Abstract:
Damage and failure in materials are among complex and fundamental problems in solid mechanics,In recent years,a series of new progresses have been made,This paper reviews the progress in statistical meso-scopic damage mechanics and evolution induced catastrophe model,This approach combines new achievements in mechanics,statistical physics and nonlinear science,and re- presents a new attempt in the study of material damage and failure.
MATHEMATICAL FOUNDATION OF FRAVTAL MECHANICS
1995, 25(2): 174-185. doi: 10.6052/1000-0992-1995-2-J1995-024
Abstract(2737) PDF(1139)
Abstract:
Mechanics based on a fractal dimension space is defined as fractal mechanics,According to fractal theory, fractal mechanics should be described hy introducing new space concepts and new mathematical tools,In this paper,space, measure and dimension are first introduced,Fractal space, Besov space and the method of fractal interpolation function are then described in details. Moreover,the definition of mechanical quantities and laws on a fractal boundary and a fractal body is discussed.
ADVANCES AND PROBLEMS IN THE STUDY OFMULTILAYER FEEDFORWARDN EURAL NETWORKS
1995, 25(2): 186-196. doi: 10.6052/1000-0992-1995-2-J1995-025
Abstract(1562) PDF(1092)
Abstract:
In this paper,①a brief introduction is given to the history of research on multilayer feedforward neural networks;②a systematic review is given to some important achievements in the field of multilayer feedforward networks;③some existing problems and tendencies in the study of multilayer feedforward networks are pointed out,and a few of feasible methods for solving those questions are suggested;④a systematic analysis of approximation mechanism of feedforward networks with a scale,limited discrete point set ...
Cell biomechanics
1995, 25(2): 197-208. doi: 10.6052/1000-0992-1995-2-J1995-026
Abstract(4233) PDF(920)
Abstract:

A state-of-art survey in the field of the cell biomechanics is pre- sented in this paper,Emphasis is placed on showing how to measure and charac- terize the mechanical and adhesive properties of cells and membranes,Discus-sions are made on the studies of large deformations and active deformations of cells
THE MECHANICAL ANALYSIS OF SMART MATERIALS AND STRUCTURES
1995, 25(2): 209-222. doi: 10.6052/1000-0992-1995-2-J1995-027
Abstract(2517) PDF(723)
Abstract:
Smart materials have the ability to perform both sensing and actuating,with which some coupling effects will show among some of electric,magnetic,thermic, mechanical, optical, acoustical, chemical,or rheological properties of the materials without outside actions.Once the smart materials are built into structures,they will become smart or intelligent,This review focuses on the rnechanical analysis on linear electromagneto-thermo-solids,especially piezoelec- tric materials,and the control theory for smart st...
OVERVIEW OF STUDIES ON NON-DESTRUCTIVE EVALUATION USING OPTICAL FIBER SENSOR EMBEDDED IN CONCRETE STRUCTURES
1995, 25(2): 223-231. doi: 10.6052/1000-0992-1995-2-J1995-028
Abstract(1766) PDF(908)
Abstract:
In this paper an analysis is presented on the use of embedded optical hber sensors in concrete elements and structures for the non-destructive meas- urement of internal stress and strahas well as fol the assessment of structural integrity,The fundamental properties of materials and micro-mechnical aspects regarding the fiber/matrix interaction are discussed,In addition,a summary of the experimental results obtained to date is made along with the prospective applications with respect to this new technology.
DIFFERENTIAL QUADRATURE IN THE ANALYSISOF STRUCTURAL COMPONENTS
1995, 25(2): 232-240. doi: 10.6052/1000-0992-1995-2-J1995-029
Abstract(1955) PDF(1657)
Abstract:
The differential quadrature. (DQ) method and its applications instructural mechanics are summarized. Some research areas of the DQ method arepointed out for further developments.
INTRODUCTION TO SELECTED PAPERS PRESENTED AT SEMINAR ON ADVANCED MATERIALS AND NEW TECHNOLOGY IN MATERIAL PROCSSING
1995, 25(2): 241-242. doi: 10.6052/1000-0992-1995-2-J1995-030
Abstract(1313) PDF(677)
Abstract:
SOME PROBLEMS OFPHYSICAL MECHANICS IN THE DEvELOPMEMT OF ADVANCED MATERIALS: MECHANICAL PROPERTIES AND MATERIALS DESIGN
1995, 25(2): 243-248. doi: 10.6052/1000-0992-1995-2-J1995-031
Abstract(1870) PDF(1060)
Abstract:
This paper expounds that it is necessary to share out the work andcooperate with one another among different disciplines for the design ofadvanced materials,The principal problem in the design of structural materialsis the mechanical properties of the material,which include high strength, finemechanical working performance and high damping capacity,the key link ofwhich is the strengthening of the study on physical mechanics and mechanicalphysics
MESO-AND MICRO-SCOPIC MECHANICS FOR COMPLEX MICRO MECHANICAL-ELECTRICAL SYSTEMS
1995, 25(2): 249-259. doi: 10.6052/1000-0992-1995-2-J1995-032
Abstract(1636) PDF(893)
Abstract:
With the development of advanced technology,a lot of problems not covered completely by the classical mechanics have to be dealt with Which will be a great driving force for future development of applied mechanics,One of these important problems is the complex micro mechanical-electrical systems in cluding microelectric materials,components and systems and micro electrical- mechanical systems in microelectric technology,In the present paper,the in- dustry background and development of complex micro mechanic
MECHANICAL PROPERTIES OF SUPERPLASTIC DEFORMATION AND CONSTITUTIVE RELATION
1995, 25(2): 260-275. doi: 10.6052/1000-0992-1995-2-J1995-033
Abstract(1606) PDF(896)
Abstract:
First of all,this paper discusses the mechanical properties of superplastic deformation, which are related to macro-mechanic characters,deformation micro- mechanism,and microstructure changes during superplasticdeformation,The second part of this paper gives a review on recent investiga- tion of superplastic constitutive relations.
MICROSTRUCTURE OF A RAPIDLY SOLIDIFIED POWDER METALLURGY AI-Fe-V-Si ALLOY
1995, 25(2): 276-281. doi: 10.6052/1000-0992-1995-2-J1995-034
Abstract(1749) PDF(696)
Abstract:
The morphology,distribution,crystallography and microstructure of the precipitates in a dispersoid strengthened,powder metallurgy Al-8.5Fe-1.3V- 1. 7Si alloy were studied by X-ray and TEM,The results show that there is only one kind of precipitate, namely, Al_13(Fe,V)_3Si, with a l.256 nm of lat- tice parameter.There is a preferred orientation relationship for intergranular dispersoids to be recognized as follows {110}Al-matrix{110}silicide <111>Al-matrix<110>silicide Examinations by high resolution electro
MECHANICAL BEHAVIOR OF A RAPIDLY SOLIDIFIED POWDER METQLLURGY AI-Fe-V-Si ALLOY
1995, 25(2): 282-247. doi: 10.6052/1000-0992-1995-2-J1995-035
Abstract(1604) PDF(797)
Abstract:
An investigation has been made of the mechanical behavior of adispersoid strengthened,powder metallurgy Al-Fe-V-Si alloy at ambient tempera-lure and 250℃,The results show that the tensile ductility and fatigue life ofthe alloy decrease with the increase of temperature from room temperatureto 250℃,Observations by SEM indicate that the change of the mechanicalbehavior with temperature is related to the transformation of the fracture modefrom transgranular to intergranular,which is assumed to be due to differe...

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