Advanced Search

1999 Vol. 29, No. 2

  Previous Issue | Next Issue 
SOME TOPICS ON FLEXIBLE MULTIBODY SYSTEM DYNAMICS
1999, 29(2): 145-154. doi: 10.6052/1000-0992-1999-2-J1998-067
Abstract(2338) PDF(1318)
Abstract:
This paper summarizes the studies on flexible multibody system dynamics in recent years. The focus of this paper are on the modeling method, modal selection and synthesis, dynamics stiffening and the numerical method for differential algebraic equations. The trend of the development of flexible multibody system dynamics is discussed at the end of this paper.
VIBRO IMPACTS AND THEIR TYPICAL BEHAVIORS OF MECHANICAL SYSTEMS
1999, 29(2): 155-164. doi: 10.6052/1000-0992-1999-2-J1998-068
Abstract(2428) PDF(1776)
Abstract:
This paper surveys the recent advances in the field of vibro impacts of mechanical systems and presents some of their typical behaviors. The review is made on the geometrical and numerical analyses and the experimental studies of the vibro impacting systems, with the emphasis laid on the stability, singularity, grazing bifurcations and nonlinear modes. Finally, some open problems for further study are addressed.
RESEARCH ADVANCES IN INTELLIGENT STRUCTURES IN VIBRATION ENGINEERING
1999, 29(2): 165-177. doi: 10.6052/1000-0992-1999-2-J1998-069
Abstract(1940) PDF(1279)
Abstract:
The concept of intelligent structures is introduced in this paper. Some fundamental problems of intelligent structures in vibration engineering, such as sensor, actuator, dynamic modeling, vibration control and optimal placement of sensor/actuator, are reviewed in detail.
STUDY ON FRACTURE MECHANICS IN CREEP OF SOLIDS WITH CRACK
1999, 29(2): 178-186. doi: 10.6052/1000-0992-1999-2-J1998-070
Abstract(1920) PDF(1728)
Abstract:
A survey on new developments of researches on fracture mechanics in creep range is given in this paper. The creep crack growth, creep damage, creep fatigue fracture and creep life assessment are reviewed.
CURRENT RESEARCH ON THE DAMAGE AND FRACTURE MECHANICS OF PIEZOELECTRIC MATERIALS
1999, 29(2): 187-196. doi: 10.6052/1000-0992-1999-2-J1998-071
Abstract(1961) PDF(985)
Abstract:
Damage and fracture mechanics of the piezoelectric medium is a very important branch of solid mechanics. First, the current research on the damage and fracture mechanics of piezoelectric materials is reviewed. Three topics are addressed: (1) different formulation of the electric boundary of defect and its effect on the mechanical behaviour of the damage and fracture of the piezoelectric medium; (2) static analys for the fracture by using the continuum mechanics and mesomechanics approach; (3) some new res...
STUDY OF MECHANICAL PROPERTIES OF MULTI DIRECTIONAL BRAIDED COMPOSITES
1999, 29(2): 197-210. doi: 10.6052/1000-0992-1999-2-J1998-072
Abstract(2114) PDF(1274)
Abstract:
This paper presents a review on the studies of the effective elastic moduli of three dimensional braided composite materials. The relationship among macromechanical properties of multi directional composites, composing properties and mesobraided structures is investigated based on a material design point view, with macroscopic and mesoscopic aspects combined and material science and mechanics integrated. The nonlinear behavior of braided composites is also studied.
REVIEW ON EXPERIMENTAL INVESTIGATION OF CONTROL OF SEPARATION FLOW
1999, 29(2): 211-220. doi: 10.6052/1000-0992-1999-2-J1998-073
Abstract(1650) PDF(1078)
Abstract:
Experimental investigations of control of separation flows of several typical geometry configurations have been reviewed, such as, 2D backward facing step, airfoil, axisymmetric bluff body, etc. Mechanism of excitation controlling separation flow was analyzed, and a universal dimensionless forcing frequency range of the optimum excitation was attained. In addition, some forcing methods were introduced, and the prospects to their developments were presented.
EFFECT OF MICORGRAVITY ENVIRONMENT AND EXTERNALLY APPLIED MAGNETIC FIELDS ON DOPANT SEGREGATION OF CRYSTAL GROWTH
1999, 29(2): 221-231. doi: 10.6052/1000-0992-1999-2-J1998-074
Abstract(2270) PDF(1128)
Abstract:
Floating-zone crystal growth is one of the most important methods of growing bulk single crystals. In this paper, the qualitative and quantitative studies on the effect of macroscopic fields in the melt zone on the dopant distribution of the crystals were reviewed, both theoretically and experimentally. From the viewpoint of improving the dopant distribution uniformity in the bulk single crystal, the application of two important, popular technologies, microgravity environment and externally applied mag...
BIOMECHANICS AND BONE TISSUE ENGINEERING
1999, 29(2): 232-243. doi: 10.6052/1000-0992-1999-2-J1998-075
Abstract(3006) PDF(1330)
Abstract:
Tissue engineering is an emerging engineering technology and an important part of bioengineering. The studies on tissue engineering by biomechanics is play a vital role in the growth, remodeling, and morphorgenesis of the tissue. They are used to make tissues or organs available to replace the damaged ones. In the present paper, some concepts in tissue engineering are introduced and discussed. Some important problems in bone tissues, solved or to be soloved, are reviewed.
REVIEW ON BIOMECHANICAL MODELLING FOR HUMAN KNEE JOINT
1999, 29(2): 244-250. doi: 10.6052/1000-0992-1999-2-J1998-076
Abstract(2001) PDF(1505)
Abstract:
Simulation of the response of human knee joints is an important area of biomechanics research. The artificial replacement and reconstructive surgery depend on the knowledge on the mechanical functions of the knee joints. In other disciplines such as sports medicine, crash protection, and vehicle design related applications an increasing interest is shown in the motions and forces in the human knee joint. In this paper, the progress and current situation of biomechanical models on human knee joint are re...
THERMAL PLASMA TECHNOLOGY: WHERE DO WE STAND AND WHERE ARE WE GOING?
1999, 29(2): 251-267. doi: 10.6052/1000-0992-1999-2-J1998-077
Abstract(2540) PDF(1462)
Abstract:
In this overview, an attempt is made to assess the present and future research and development in thermal plasma processing of materials restricted to (1) thermal plasma coating technologies, (2)thermal plasma synthesis of fine powders, (3) thermal plasma waste destruction, and (4) thermal plasma spheroidization and densification.Sine thermal plasma processing is, in general, governed by a large number of parameters, implementation of controls becomes mandatory. The lack of sufficient controls combined with...
1999, 29(2): 268-268. doi: 10.6052/1000-0992-1999-2-J1998-078
Abstract(1503) PDF(941)
Abstract:
1999, 29(2): 269-270. doi: 10.6052/1000-0992-1999-2-J1998-079
Abstract(1658) PDF(2532)
Abstract:
1999, 29(2): 271-275. doi: 10.6052/1000-0992-1999-2-J1998-245
Abstract(1254) PDF(797)
Abstract:
1999, 29(2): 276-276. doi: 10.6052/1000-0992-1999-2-J1998-080
Abstract(1207) PDF(813)
Abstract:
1999, 29(2): 278-278. doi: 10.6052/1000-0992-1999-2-J1998-081
Abstract(1402) PDF(919)
Abstract:
1999, 29(2): 279-279. doi: 10.6052/1000-0992-1999-2-J1998-082
Abstract(1440) PDF(791)
Abstract:
1999, 29(2): 280-284. doi: 10.6052/1000-0992-1999-2-J1998-083
Abstract(1300) PDF(1156)
Abstract:

Copyright © Editorial Department of Advances in Mechanics   京ICP备05039218号-1

Address：No. 15, North Fourth Ring West Road, Haidian District, Beijing (100190)   Tel：010-62637035   Email：lxjz@cstam.org.cn

Supported by: Beijing Renhe Information Technology Co. Ltd  

Baidu
map