KSME International Journal

, Volume 18, Issue 9, pp 1529–1536 | Cite as

An analytical approach for structural synthesis of substructures

  • Hee-Chang Eun
  • Sang-Yeol Park
  • Eun-Taik Lee


A structure is broken down into a number of substructures by means of the finite element method and the substructures are synthesized for the complete structure. The divided substructures take two types : fixed-free and free-free elements. The flexibility and stiffness matrices of the free-free elements are the Moore-Penrose inverse of each other. Thus, it is not easy to determine the equilibrium equations of the complete structure composed of two mixed types of substructures. This study provides the general form of equilibrium equation of the entire structure through the process of assembling the equilibrium equations of substructures with end conditions of mixed types. Applications demonstrate that the proposed method is effective in the structural analysis of geometrically complicated structures.

Key words

Substructuring Compatibility Equilibrium Equation Constraint Synthesis Method 


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2004

Authors and Affiliations

  1. 1.Department of Architectural EngineeringKangwon National UniversityChuncheonKorea
  2. 2.Department of Civil and Environmental EngineeringCheju National UniversityJejuKorea
  3. 3.Department of Architectural EngineeringChung-Ang UniversitySeoulKorea

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