Acta Mechanica Sinica

, Volume 5, Issue 4, pp 353–360 | Cite as

A work softening joint element used in dynamic analysis of soil-structure

  • Kenzo Toki
  • Cai Yongen
  • Zhao Zhendong


This paper introduces an elasto-plastic joint element characterised by strain hardening and softening in the analysis of dynamic soil-structure interaction. The phenomena of separation and sliding on the contact surface between soil and structure can be better simulated and the process can also be described. The interaction problems in a typical soil-structure system are analyzed in terms of elasto-plastic joint element as well as elastic ones. The results show that the elasto-plastic joint element is much better than the elastic one in modelling, especially in that the relative displacements accross the joint element can be much greater than that of the elastic case. Separation and sliding are not only related to the coefficient of friction and cohesion but also to their changes with plastic volumetric strain.

Key Words

strain softening separation sliding 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1989

Authors and Affiliations

  • Kenzo Toki
    • 1
  • Cai Yongen
    • 2
  • Zhao Zhendong
    • 3
  1. 1.Disaster Provention Research InstituteKyoto UniversityUji, KyotoJapan
  2. 2.Department of GeologyPeking UniversityBeijingChina
  3. 3.Institute of Engineering MechanicsState Seismological BureauChina

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