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1996 Vol. 26, No. 3

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CHARACTERIZING COMPLEXITY OF DYNAMICAL SYSTEMS
1996, 26(3): 289-305. doi: 10.6052/1000-0992-1996-3-J1996-025
Abstract(1592) PDF(980)
Abstract:
This paper gives an overview of different measures of complexity proposed to characterize dynamical systems developed during recent years. The emphasis is placed on the distinction of complexity from randomness. Those measures, which were used to characterize chaos, including Lyapunov exponent,topologic al entropy, metric entropy, Kolmogorov complexity etc., are reviewed briefly in this sense. New measures, including AC, SC, EMC among others,are explained from the point of view of both automata and informat...
A REVIEW OF STUDIES ON THE MECHANICAL PROPERTIES OF FOAM PLASTICS
1996, 26(3): 306-323. doi: 10.6052/1000-0992-1996-3-J1996-026
Abstract(1795) PDF(2165)
Abstract:
A review of studies on static and dynamic mechanical properties of foam plastics is given in this paper. The emphasis is on the recent developments, including some author's work in this field.
ADVANCES OF THE STUDIES ON CHAPLYGIN'S EQUATIONS
1996, 26(3): 324-337. doi: 10.6052/1000-0992-1996-3-J1996-027
Abstract(1605) PDF(823)
Abstract:
This paper presents some recent developments of the studies on theChaplygin's equations of nonholonomic mechanical. systems, which include the generalizations of the form of the equations, their algebraic and geometricrepresentations, integration theory of the equations,inverse problem of dynamics,stability of motion.This paper also offers some suggestions for a futureinvestigation.
MECHTRONIC FAILURE ANALYSIS
1996, 26(3): 338-352. doi: 10.6052/1000-0992-1996-3-J1996-028
Abstract(1867) PDF(853)
Abstract:
Mechtronic failure analysis investigates stress-induced failure behavior under monotonic or cyclic electric loads. New research topics of mechtronicfailure analysis include electric fracture, electric fatigue, electromigration, andmigration-induced damage. The present paper surveys the field and typical topicsof mechtronic failure analysis. In-depth discussions are given for two subjects:fracture and fatigue mechanisms by electrostriction, and the mechtronic processof void damage induced by electromigration...
SOME PROBLEMS IN THE RESEARCH OF FRACTAL FRACTURE SURFACES
1996, 26(3): 353-361. doi: 10.6052/1000-0992-1996-3-J1996-029
Abstract(1674) PDF(859)
Abstract:
This paper discusses some problems in the research of fractal fracture including the fractal characters of fracture surfaces and the measurement oftheir fractal dimensions, the relationship between fractal dimensions of fracturesurfaces and macroscopic mechanical. properties such as fracture toughnessetc ., the fractal fracture models and the fractal fracture mechanism
THE ADVANCES OF STUDIES ON THE DYNAMIC INITIATION OF CRACKS
1996, 26(3): 362-378. doi: 10.6052/1000-0992-1996-3-J1996-030
Abstract(1964) PDF(1348)
Abstract:
It is attempted by this paper to systematically review the existing dynamic initiation criteria. Some well -known dynamic initiation criteria are:(1) Dynamic stress intensity factor criterion; (2) Dynamic J-integral criterion;(3) Least action criterion; and (4) Minimum time criterion. Some recent important experiments and some important conclusions obtained from experimentsare briefly introduced. It is generally agreed by the experiments that the dy namic fracture toughness of materials under small-scale yi...
1996, 26(3): 378-427. doi: 10.6052/1000-0992-1996-3-J1996-031
Abstract(1058) PDF(579)
Abstract:
ADVANCES OF FINITE ELEMENT SIMULATION OF SHEET FORMING PROCESSES
1996, 26(3): 379-388. doi: 10.6052/1000-0992-1996-3-J1996-032
Abstract(1377) PDF(786)
Abstract:
The advances of finite element simulation of sheet forming processes are illustrated by a comparison of several simple problems and benchmark tests widely studied by many researchers in different periods. The existing problems and future development trends are also briefly outlined.
MAGNETOELASTICITY, THERMAL-MAGNETOELASTICITY AND THEIR APPLICATIONS
1996, 26(3): 389-406. doi: 10.6052/1000-0992-1996-3-J1996-033
Abstract(1818) PDF(1625)
Abstract:
This paper presents the research scopes, developing history, basic equations, theoretical studies and the applications of magnetoelasticity and thermal-magnetoelasticity.
NEW ADVANCES IN METHOD OF WEIGHTED RESIDUALS IN CHINA
1996, 26(3): 407-415. doi: 10.6052/1000-0992-1996-3-J1996-034
Abstract(1735) PDF(622)
Abstract:
In this paper, the new methods of weighted residuals proposed by Chinese scholars are reviewed. These new methods are convenient to use and give better results as compared with the traditional methods.
A REVIEW ON THE MICROMECHANICAL STUDY OF CANCELLOUS BONE
1996, 26(3): 416-423. doi: 10.6052/1000-0992-1996-3-J1996-035
Abstract(2231) PDF(919)
Abstract:
Mechanical properties of cancellous bone and the relationship between elastic modulus, compressive strength and relative density of cancellous bone,studied by means of micromechanical methods, are important research fields of bone mechanics.
1996, 26(3): 424-425. doi: 10.6052/1000-0992-1996-3-J1996-036
Abstract(1251) PDF(719)
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1996, 26(3): 426-377. doi: 10.6052/1000-0992-1996-3-J1996-037
Abstract(1090) PDF(715)
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1996, 26(3): 428-431. doi: 10.6052/1000-0992-1996-3-J1996-038
Abstract(1397) PDF(717)
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1996, 26(3): 432-432. doi: 10.6052/1000-0992-1996-3-J1996-039
Abstract(1216) PDF(812)
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