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Acknowledgement This research was supported by the National Natural Science Fund of China (Item No. 51175180).The support of the project is gratefully acknowledged.
Applied Mechanics and Materials Vols. 135(2010)pp 122-127
Reid, Analysis of stress concentration around a spheroidal cavity under asymmetric dynamic loading, International Journal of Solids and Structures 48 (2011) 2255–2263.

The process is as follows: By the hypothesis of Miner fatigue damage accumulation formula [3] (2) Where: Z—stages of step stress —life cycle of stress —limit life cycle when only stress is exerted Then according to the fatigue curve of V-belt [3] (3) Where: N — limit life cycle — limit stress with life cycle N —constant related to material and structure of belt The limit life cycle corresponding to obtained on the basis of Eq.3 is put in Eq.2 to get the calculation equation of equivalent stress with constant life cycle (4) On the basis of Eq.4 the step stress accelerated life testing data with
38.889 39.237 39.447 9.6 9.6 9.6 6.8 23.47 7 38.565 38.915 39.266 39.617 39.968 9.6 9.6 8.8 8.8 7.2 24.07 12 38.502 38.848 39.194 39.540 39.887 9.6 9.6 9.6 9.6 34.8 25.34 3 38.609 38.964 39.318 39.673 9.6 9.6 9.6 7.2 23.57 8 38.563 38.914 39.246 39.615 39.966 9.6 9.6 9.6 9.6 8.0 24.20 13 38.629 38.984 39.339 39.695 40.050 9.6 9.6 9.6 9.6 36.0 25.48 4 38.545 38.894 39.244 39.593 9.6 9.6 9.6 9.6 23.68 9 38.637 38.993 39.349 39.705 40.060 9.6 9.6 9.6 9.6 9.6 24.34 14 38.540 38.889 39.237 39.586 39.935 9.6 9.6 9.6 9.6 45.6 25.72 5 38.602 38.956 39.309 39.663 9.6 9.6 9.6 9.6 23.72 10 38.499 38.845 39.191 39.537 39.833 9.6 9.6 9.6 9.6 24.0 24.91 Table 2 Reliable limit stress () and reliability factor of D-section classical V-belt R（%） 50 60 70 80 90 95 99 (MPa) 24.28 24.05 23.81 23.52 23.13 22.80 22.19 1 0.991 0.981 0.969 0.953 0.939 0.914 An Example For a D section classical V-belt drive system, the material
References [1] Y.D.Liu: Chinese Journal of Rubber Industry Vol. 41 (1994) No.2, p.103.
(In Chinese) [2] H.Z.Huang: Reliability Theory and Application of Mechanical Transmission (China Science and Technology Press, P.R.C 1995),p151.

(2.1) (2.2) Where, is the contact half-width, is the maximum contact stress,, is Material Poisson's ratio, , is elastic modulus of the material, is the contact length, ,is the Contact radius of the cylinder.
References [1] LIU Zhong-min, YU Xiao-li, SHEN Yu-ming Comparison of valve train dynamic models Journal of Zhejiang University (Engineering Science).2005 (In chinese) [2] Richard H.

Owing to the remarkable designability of filament wound process, the lay-up can be designed by its stress distribution, and then the mechanical property of materials will be fully used [1].
Nesterov: Composite Structures Vol. 93 (2011), p. 308 [3] Riks E: International Journal of Solids and Structures Vol.7 (1979), p.529 [4] Azam Tafreshi, Colin G.
Roberts: Composites Science and Technology Vol. 62, (2002), p.62

Acknowledgements The authors feel grateful to the financial support from the National Natural Science Foundation of China (NSFC) under the grant 50275022 and 51075055, and the China Scholarship Council (CSC) under the grant 20821099.
Detection and measurement of surface cracks in ferromagnetic materials using eddy current testing.
Microelectronics Journal, 2004, 35: 131-143

Research on overlying strata movement and deformation under the conditions of shortwall and longwall mining Kuo Li 1, a, Yong-bo Zhang 2,b 1,2 Water Conservation Science and Engineering College, Taiyuan University of Technology, Taiyuan 030024,China a likuokiss@sina.com, b ty_zyb@sina.com The author profile: Kuo Li (1985- ), man, Xinji Town of Hebei Province, Master, mainly engaged in the mining geology environment the research, Tel:13934045710，E-mail:likuokiss@sina.com Corresponding author:Yong-bo Zhang, Professor, Tel:13834606106, E-mail:ty_zyb@sina.com Keywords: double deck mining; overlying strata movement; chain reaction Abstract: We simulate the rock’s movement and defoemation process in the coal mining, and research the overlying strata movement and deformation under the conditions of shortwall and longwall mining.
The alike material selects silica sand, river sand and mica to make bones, the lime, gypsum and calcium carbonate to make glue tie material, and the borax to make slow ning agent.
Journal of China Coal Soiciety,2007,32(6):577~580

Study on Predictive Control Algorithm of Reactor Temperature Li Mingqiu1, a, Yu Yanxin2,b School of Electronics and Information Engineering, Changchun University of Science and Technology Changchun 130021, China 1 limingqiu2003@126.com, 2yanxinyu@163.com Keywords: Reactor; PID Control; Predictive Control; DMC Abstract.
Because there are exothermic and endothermic phenomenon in the reaction process and the variation of raw material purity, type and amount of catalyst, temperature and flow of circulating water and hot-water, the reactor is difficult to meet the industrial needs by classical control scheme.
M is control time domain, N is model length, P is optimization time domain.[5] (8) (9) (10) Predictive Model With System Uncertainty If consider the influence of the variation of raw material purity, type and amount of catalyst, temperature and flow of circulating water and hot-water, the predictive model with system uncertainty can be obtain as (11) = (12) (13) Feedback Compensation Because the reactor temperature control system has various disturbances, so the predictive model should be
Journal of Dalian Maritime University No 5 (2006), p. 20-28 [3] Hang C.C., Ho W.K, and Cao L.S: Comparison of two design methods for PID controllers.

Introduction Sintering machine is the main equipment at sintering plant, whose role is to provide the main raw materials for blast furnace - sinter.
Acknowledgement The authors acknowledge the financial support from Project 51074141 supported by National Natural Science Foundation of China.
Bai: Chinese Journal of Mechanical Engineering, Vol.42 (2006), p.196.

Lei School of Material Science and Engineering, Beijing University of Technology, Beijing, China awrp520@gmail.com Keywords: Laser Welding; Keyhole; Free Surface; Recoil Pressure Abstract: The elaborated model solves the coupled equations of a laminar fluid flow and heat transfer to predict the temperature distribution in the weld pool.
Introduction Keyholes are a quite unique phenomenon observed in high power density material processes such as laser deep penetration welding.
Mordike: Welding Journal Vol.77 (1998), p.149-154

Optimum Design of Spindle Used in Tire Building Machine Degong CHANG1, a, Xiaofan WANG1, b 1 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China a hyg@163.com, bkyller123@126.com Keywords: tire building machine, spindle, COSMOS, optimization Abstract.
The material of the spindle is 42CrMo whose elastic modulus and density are 52.0 10 Mpa× 33 7.88 10 /kg m× respectively.
The results are: the max displacement less than the limited displacement 1mm is 0.6792mm, meeting the requirement; the max stress less than the limited stress of the material is 72 3.430 10 /� m× ; the volume is 331197000mm ; The displacement is shown in Fig. 3.
Journal of HOHAI University.