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Excited response of granular ores in vibrating field

  • Li Jian-hua 
  • Sun Ye-zhi 
  • Wu Ai-xiang 
  • Chen Shou-ru 
Article
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Abstract

The dynamical theory was utilized to probe into the law of the excited response of granular ores generated by the exciting action of exciter and the influence of wave propagation in vibrating field. The exciter with double axes was presented as an example, and the principle of exciter and its mathematical expression of the excitation force were given. The granular ores have viscidity and damping speciality, on the basis of which the motion equation of excited response of ores was established and the approximate expression of mode-displacement by harmonic excitation and the steady effect solution of coordinate response were deduced. Utilizing the step-by-step integration method, the recursion relation matrix of displacement, velocity and acceleration of the excited response of ores were obtained, and the computational flow chart and a computational example were given. The results show that the excited response can change the dynamical character and the flowing characteristic of granular ores.

Key words

excitation system excited response granular ore step-by-step integration method 

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References

  1. [1]
    WU Ai-xiang. Study on the character of granular ores and the theory of dynamics under vibrating field[D]. Changsha: Department of Resources Exploitation Engineering, Central South University of Technology, 1991.Google Scholar
  2. [2]
    WU Ai-xiang, GU De-sheng, SUN Ye-zhi, et al. Experiment and mechanism of vibration liquefaction and compacting of saturated bulk solid[J]. Journal of Central South University of Technology, 2001, 8(1): 34–39.CrossRefGoogle Scholar
  3. [3]
    WU Ai-xing, GU De-sheng. The characteristics of inner and boundary friction of bulk solid under vibration[J]. J Cen-South Inst Min Metall, 1993, 24(4): 459–463.MathSciNetGoogle Scholar
  4. [4]
    Nakata Y, Hyodo M, Murata H, et al. Flow deformation of sands subjected to principal stress rotation[J]. Soils & Foundations, 1998, 38(2): 115–128.CrossRefGoogle Scholar
  5. [5]
    GU De-sheng, WANG Hui-ying, LI Jue-xin. Technology of ore-drawing by vibration (in Chinese)[M]. Changsha: Central South University of Technology Press, 1989.Google Scholar
  6. [6]
    Zhang J M, Shamoto Y, Tokimatsu K. Cyclic cri-tical stress states of sand with nonfrictional effects[J]. Journal of Engineering Mechanics, 1999, 125(10): 1106–1115.CrossRefGoogle Scholar
  7. [7]
    Jennings A. Eigenvalue method for vibration analysis[J]. The Shock and Vibration Digest, 1980, 12(2): 3–16.CrossRefGoogle Scholar
  8. [8]
    MA Hong-wu, WU Bin. Elastic dynamics and its numerical method (in Chinese)[M]. Beijing: China Building Materials Industry Press, 2000.Google Scholar

Copyright information

© Central South University 2001

Authors and Affiliations

  • Li Jian-hua 
    • 1
    • 2
  • Sun Ye-zhi 
    • 1
  • Wu Ai-xiang 
    • 1
  • Chen Shou-ru 
    • 1
  1. 1.College of Resources, Environment and Civil EngineeringCentral South UniversityChangshaChina
  2. 2.The 5th Building Company in Guangdong ProvinceShaoguanChina

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