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| 1 | DEVELOPMENT OF POLYMER MINERAL COMPOSITE AND ITS DAMPING PROPERTY显示文摘The principle of production of polymer mineral composite was analyzed. Property parameters and the procedure for producing PMC components were also given. Damping property and principle of vibration absorption of polymer mineral composite were also investigated. Reduced experiment was conducted for two jigs which are similar in structure only different in material that one made of PMC the other made of casting iron to test their dynamic characteristic. | J.Sun 1) ,J.F.Li 2) ,B.J.Lu 1) ,J.F.Zhong 3) and X.P. Huang 1) 1) Dept. of Agri. Eng., Laiyang Agriculture College, Laiyang 265200,China 2) Dep. of Mech. Eng., Shandong University of Technology, Jinan 250061,China 3) Agruculture S | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 23 |
| 2 | UNIFYING REPRESENTATION OF BZIER CURVE AND GENERALIZED BALL CURVES显示文摘This paper presents two new families of the generalized Ball curves which include the Be ′zier curve, the generalized Ball curves defined by Wang and Said independently and some intermediate curves. The relative degree elevation and reduction schemes, recursive algorithms and the Bernstein\|Be ′zier representation are also given. | Wu HongyiDept. ofMath. and Mech., HefeiUniv. of Technology,Hefei230009. | 2000 | Applied Mathematics(A Journal of Chinese Universities)2000，15，1： | 14 |
| 3 | A THIRD-ORDER BOUSSINESQ MODEL APPLIED TO NONLINEAR EVOLUTION OF SHALLOW-WATER WAVES显示文摘The conventional Boussinesq model is extended to the third order in dispersion and nonlinearity. The new equations are shown to possess better linear dispersion characteristics. For the evolution of periodic waves over a constant depth, the computed wave envelops are spatially aperiodic and skew. The model is then applied to the study of wave focusing by a topographical lens and the results are compared with Whalin′s (1971) experimental data as well as some previous results from the conventional Boussinesq model. Encouragingly, improved agreement with Whalin′s experimental data is found. [WT5”HZ] | Zhang Ying long CCM MINDEF, Department of Mech. and Prod. Eng., National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 Zhu Song ping Department of Mathematics, the University of Wollongong, Wollongong, NSW 2522, Australia | 2000 | Journal of Hydrodynamics2000，12，2： | 7 |
| 4 | NUMERICAL COMPUTATION OF THE DIFFUSION OF THE CONTAMINANTS AND THE FLOW FIELD OF SKEW DISCHARGES INTO A CHANNEL显示文摘NUMERICAL COMPUTATION OF THE DIFFUSION OF THE CONTAMINANTS AND THE FLOW FIELD OF SKEW DISCHARGES INTO A CHANNELNUMERICALCOMPU... | Lu Zhi-ming Liu Yu-ln (Shanghai Ins. of Appl. Math. & Mech. Shanghai University, Shanghai 200072, P. R.China.) | 1996 | Journal of Hydrodynamics1996，8，3： | 3 |
| 5 | 亚象元边缘检测方法的研究显示文摘本文论述了在边缘检测中提高CCD固有分辨率原理及其实现的软件方法。 | Wang Hongyu (A Place of Researeh of Applying Optics of Changchun Inst.Optics & Fine Mech.) | 1996 | 长春光学精密机械学院学报1996，19，1： | 2 |
| 6 | EXPERIMENTAL RESEARCH ON INTERNAL WAVES GENERATED BY A MOVING BODY IN A STRATIFIED FLUID显示文摘Two-dimensional internal waves generated by a moving flat body in a continuous-ly stratified fluid are investigated by using three kinds of flow-visualizationmethods:electrolytic precipitation,hydrogen bubbles,and dye streaks.Attentionsare paid mainly to the generation and propagation process in the upstream regionunder low internal Froude number(1/10π<F_r<1/2π).The features of the upstreamdisturbances as well as their relationship with stratification number K (K=1/F_r)are illustrated.The corresponding theoretical analysis is briefly presented,andby comparison,the experimental and theoretical results agree well. | Zhang She-guang Dai Shi-qiang Shanghai Inst.of Appl.Math.and Mech.,Shanghai,P.R.ChinaHuhe Aode Institute of Mechanics,Academia Sinica,Beijing,P.R.China | 1989 | Journal of Hydrodynamics1989，1，2： | 2 |
| 7 | Microcracking and stress-strain curves for concrete in tension显示文摘 | R. H. Evans C.B.E. D. Sc. D. ès Sc. Ph. D. M.I.C.E. F. Am. Soc. C.E. M.I. Mech. E. M.I. Struct. E. M. S. Marathe B.E. D.C.T. Ph. D | 1968 | Matériaux et Constructions1968，，1： | 1 |
| 8 | Numerical Study of Phase Transition in Thermoviscoelasticity显示文摘We study the spatially periodic problem of thermoviscoelasticity with nonmonotone structure relations.By pseudo- spectral method,we demonstrate numerically phase transitions for certain symmetric initial data. Without symmetry,the simulations show that a translation occurs for the phase boundary. | The paper was received on Nov. 10 ,1997. Shaoqiang TANG (Dept. of Mech. &Engin. Sci.,Peking University,Beijing 1 0 0 871 ,P.R. China) E- mail:tangsq@ns.nlspku.ac.cn | 1997 | Communications in Nonlinear Science and Numerical Simulation1997，2，4： | 1 |
| 9 | The Spectral Method for the Flow between Two Concentric Rotating Spheres, Part I:The Full Discrete Nonlinear Legendre-Galerkin Method显示文摘The nonlinear Galerkin methods are numerical schemes for evolutionary partial differential equations based on the theory of inertial manifolds and approximate inertial manifolds. In this paper, we consider the flow between two concentric rotating spheres, and combine the Legendre-Galerkin spectral methods in Part I together with the nonlinear Galerkin method, then construct the full discrete nonlinear Legendle-Galerkin spectral scheme, and derive the stability conditions and its error estimate. | Weibing FENG and Kaitai LI (Institute of Appl. Math. & Mech., Shanghai Uni., Shanghai 200072, China)(Science College, Xi’an Jiaotong University, Xi’an 710049, China)E--mail: glliu@yc.shu.edu.cn | 1998 | Communications in Nonlinear Science and Numerical Simulation1998，3，4： | 1 |
| 10 | TheDirectNumericalSimulatonofATurbulentChannelFlowwithAnalysesoftheDatabase显示文摘TheDirectNumericalSimulatonofATurbulentChannelFlowwithAnalysesoftheDatabaseChunxiaoXU&ZhaoshunZHANG(Dept.ofEng.Mech.,Tsinghua... | Chunxiao XU & Zhaoshun ZHANG (Dept. of Eng. Mech., Tsinghua Univ., Beijing 100084) | 1996 | Communications in Nonlinear Science and Numerical Simulation1996，1，2： | 1 |
| 11 | CREEP OF A POLYCRYSTALLINE NEAR γ-TiAl Alloy WITH A LAMELLAR MICROSTRUCTURE显示文摘CREEPOFPOLYCRYSTALLINENEARγ-TiAlWITHALAMELLARMICROSTRUCTUREWR.Chen;J.Triantafillou;J.BeddoesandL.Zhao(Dept.ofMech.&Aero.Eng.,... | WR. Chen J.Triantafillou J. Beddoes and L. Zhao(Dept. of Mech. & Aero. Eng.,Carleton University, Ottawa,Canada Structures, Materials & Propulsion Laboratory,National Research Council, Ottawa, Canada ) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，6： | 1 |
| 12 | Microcracking and stress-strain curves for concrete in tension显示文摘 | R. H. Evans C.B.E. D. Sc. D. ès Sc. Ph. D. M.I.C.E. F. Am. Soc. C.E. M.I. Mech. E. M.I. Struct. E. M. S. Marathe B.E. D.C.T. Ph. D | 1968 | Matériaux et Constructions1968，，1： | 1 |
| 13 | Microcracking and stress-strain curves for concrete in tension显示文摘 | R. H. Evans C.B.E. D. Sc. D. ès Sc. Ph. D. M.I.C.E. F. Am. Soc. C.E. M.I. Mech. E. M.I. Struct. E. M. S. Marathe B.E. D.C.T. Ph. D | 1968 | Matériaux et Constructions1968，，1： | 1 |
| 14 | Fracture Toughness of Cast Al-Zn-Mg Alloys显示文摘Compact tension specimens of as-cast Al-3Zn-2Mg and Al-7Zn-2Mg (in wt pct) alloys were subjected to fracture toughness tests at room temperature according to specification5 laid down in ASTM E-399-81. It was found that increasing the Zn content, grain refinement and increasing the solidification rate lead to an increase in the fracture toughness of the material. | K.H. W.Seah(Dept. of Mech. Eng., National University of Singapore, Singapore 0511)S. C. Sharma (To whom correspondence should be addressed)(Dept. of Mech. Eng., R.V.College of Engineering, Bangalore-560-059, Karnataka, India) | 1996 | Journal of Materials Science & Technology1996，12，3： | 1 |
| 15 | Microstructure and Mechanical Properties of a Duplex Martensite Austenitic Steel Precipitation-hardened by VC Carbide显示文摘This paper presents an investigation on the primary microstructure and mechanical properties of a martensite-austenitic duplex steel precipitation-hardened by VC carbide. The results show that the mechanical properties at room temperature are strongly dependent upon the volume fraction of austenite fA. When fA < 32 % both ultimate strength and Vield strength are decreased with increasing fA. however. whenfA>32%, with increasing the.fA. ultimate strength rises and yield strength drops down. Experimental results at elevated temperatures. show that when test temperature ≤500℃. the yield strength to modulus ratio remains unchanged, however. as the temperature rises a substantial fall in the ratio occurs. The strength values at 600 and 700℃ are increased with increasing strain rate measured by cross-head speed of testing rnachine, The law of mixtures and the contribution of strain-induced transformation from unstable austen ite to martensite to the mechanical properties are discussed. | Changsheng XIE Jiansheng ZHAO Peizhen SUN and Xia LIANG (Dept.of Mech. Eng. Ⅱ, Huazhong University of Science and Technology, Wuhan, 430074, China)(To whom correspondence should be addressed) | 1994 | Journal of Materials Science & Technology1994，10，5： | 0 |
| 16 | Comparing the Effectiveness of Coatings on Carbide andCermet Cutting Tool Inserts显示文摘A series of metal cutting experiments was performed on a CNC lathe to evaluate the performance of various coatings on different tool substrates. The workpiece material was plain medium carbon steel and the cutting tool materials were carbide and cermet inserts coated with various single as well as multilayer coatings. Machining was done under various cutting conditions of speed and feed-rate, and for various durations of Cutting. The output parameters studied were the cutting forces (axial, radial and tangential), the surface roughness of the workpiece, as well as the tool wear (crater and flank wear). From these results, the performances of the various cutting inserts are evaluated and compared. Results show that cutting forces are significantly lower when using coated cermets than when using coated carbides although different coatings on the same substrate also result in different cutting forces. However, there is less difference in the surface roughness of the finished workpiece for the various coatings and substrates. | K.H. W.Seah M.Rahman and C.H.Lee (Dept. of Mech. & Prod. Eng., National University of Singapore, 10 Kent Ridge Crescent, Singapore 0511 T.N.Goh (Dept. of Ind. & Sys. Eng., National University of Singapore, 10 Kent Ridge Crescent, Singapore 0511) | 1995 | Journal of Materials Science & Technology1995，11，4： | 0 |
| 17 | Study of CNC Grinding Machining Method About Isometric Polygon Profile显示文摘The formed principle and CNC grinding machining method of isometric polygonal profile are studied deeply and systematically. Equation about section curve of isometric polygon profile is set up by means of geometric principle. With the use of differential geometry theory, the curve is proved to be with geometric feature of convex curve. It is referred to as Isometric Polygonal Curve (IPC), because that is a kind of convex curve on which the distance between any parallel tangent lines is equal. Isometric Polygonal Profile (IPP) or Isometric Polygonal Cone Profile (IPCP) or Isometric Polygonal Topless Cone (IPTC) is formed with the IPC and straight line as generating curve. But the machining and measuring of the IPCP are so inconvenient that it has little value. Keeping in mind the characteristic of the IPP and IPTC, this paper puts forward the program method of CNC grinding machining. Isometric polygonal profile connection is a kind of polygonal profile connection. It has the superiority over keys (prismatic key & spline etc), and can be suit for the situations such as high rotative velocity, large torque, high precision, and small fixed room and vibration. Nowadays, some countries such as America, Russia, German and Switzerland applied CNC machining to the machining of polygon surface coupling parts, which makes their applications in machine productions such as motor engine, heavy machine increase day by day. But reports about concrete machining technology of isometric polygonal profile and programming of CNC machining program are very few. CNC grinding of the IPP and IPTC is one kind of the precision machining technology. It is of great importance to the popularization of the IPP and IPTC connection. From the forming mechanism, we can see that the machining and measuring of the IPP and IPTC are convenient, and therefore they have the value of the popularization. But the machining and measuring of the IPCP are so inconvenient that it has little value. In the programming the CNC grinding of the IPP and IPTC, it is more reasonable to calculate the coordinate of node according to the approaching method of equal error arc. According to the method of CNC grinding mentioned above to design the grinding machine, the structure is simple and of economical and practical. | WANG De-sheng, ZHOU Ai-ping, YUAN Yan-ling (Dept. of Mech. Eng. of JIT, Jiaozuo 454000, China) | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 0 |
| 18 | A Generalized Variational Principle for Coupled Thermoelasticity with Finite Displacement显示文摘Via the semi-inverse method proposed by He, a generallied variational principle of classical type (not Gurtin -type & not involving convolutions) for the entitled problem of linear anisotropic materials has been obtained directly from the field equations & boundary conditions. | Jihuan HE Gaolian LIU and Weibing FENG (Institute of Appl. Math. & Mech., Shanghai Uni., Shanghai 200072, China)E--mails glliu@yc.shu.edu.cn | 1998 | Communications in Nonlinear Science and Numerical Simulation1998，3，4： | 0 |
| 19 | A DELAY-DIFFUSION DESCRIPTION FOR TWO-DIMENSIONAL CONTAMINANT DISPERSION显示文摘In the earlier stage of dispersion process,the rate of dispersion associated withearlier discharge is relatively large because the memory term extends further back in time.In or-der to investigate the early properties of two-dimensional dispersion,we propose the delay-diffu-sion equation as follows:integral from o to ∞(x-integral from n=1 to τ ,y-integral from n=1 to τ ,t-τ)dτ=which is based on the equation derived by Smith (1981).The Dxz,Dyz,Dzy,Dyy and , hadbeen obtained. | Liu Yu-lu Shanghai Inst.of Appl.Math.& Mech.,Shanghai Univ.of Tech.,Shanghai 200072,P.R.China | 1993 | Journal of Hydrodynamics1993，5，3： | 0 |
| 20 | Determination of the Free Surface in a Liquid Tank显示文摘This article offere an easy optha method to determine the free surfare ina liquld tank. Computational examples show that it is effective and can be used for manysimilar problems. | Dahai GUO Guangjun HE Yaosong CHEN(Dept. of Mech., Peking Univ., Beijing 100871)E-mail: guodh@pub .mech.pku. edu. cn | 1996 | Communications in Nonlinear Science and Numerical Simulation1996，1，3： | 0 |
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