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YANG Hai-tian, ZHANG Xiao-yue, ZHAO Xiao, HE Yi-qian. SOLVING INVERSE BIMODULAR PROBLEMS OF TRUSS STRUCTURES VIA ANT COLONY ALGORITHM[J]. Engineering Mechanics, 2010, 27(10): 155-161.
Citation: YANG Hai-tian, ZHANG Xiao-yue, ZHAO Xiao, HE Yi-qian. SOLVING INVERSE BIMODULAR PROBLEMS OF TRUSS STRUCTURES VIA ANT COLONY ALGORITHM[J]. Engineering Mechanics, 2010, 27(10): 155-161.
shu

SOLVING INVERSE BIMODULAR PROBLEMS OF TRUSS STRUCTURES VIA ANT COLONY ALGORITHM

  • (State Key Lab of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Liaoning, Dalian 116024, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
    Graphical Abstract
    • Abstract
  • A new smoothed elastic bimodular constitutive relationship is presented, thus the sensitivity of stiffness matrix with respect to displacement can be obtained conveniently. A FEM and sensitivity analysis based numerical model is developed to solve direct problems of truss structures with dual extensional/compressive modulus, and Newton-Raphson algorithm is employed in the solution process. By utilizing the solutions of direct problems, the identification of bimodulus is realized via an ant colony algorithm. Numerical verification with noisy data is provided with satisfactory results.
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