BACK ANALYSIS USING KALMAN FILTER-FINITE ELEMENTS AND OPTIMAL LOCATION OF OBSERVED POINTS. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3

This paper focuses on the following two topics: one is a new back analysis method using Kalman filter-finite elements; the other is a method for determining the optimal location of observed points for back analysis problems. A formulation is shown on finite element method (fem) in conjunction with the Kalman filter for two-dimensional and plane strain problems, where Lame's constants of non-homogeneous regions are solved. In the numerical procedure, the location of observed nodal points is determined taking into account the 'sensitivity' coefficients. These coefficients are defined as the partial derivatives of observed displacements with respect to unknown parameters. The role and the meaning of 'sensitivity' coefficients in the Kalman filter-finite elements are also discussed. The numerical performances for various problems in the field of geomechanics are described, and the applicability of the above procedure to some back analysis problems is examined in comparison to the results derived from other algorithms. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/906191809X
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000
• Authors:
  • MURAKAMI, A
  • Hasegawa, T
• Publication Date: 1988

Media Info

• Features: References;
• Pagination: p. 2051-58
• Serial:
  • Publication of: Balkema (AA)
  • Publisher: AA Balkema

Subject/Index Terms

• TRT Terms: Conferences; Deformation; Finite element method; Mathematical models; Optimization; Soil mechanics
• Uncontrolled Terms: Optimum; Two dimensional
• ITRD Terms: 6471: Analysis (math); 8525: Conference; 5595: Deformation; 6490: Finite element method; 6473: Mathematical model; 5755: Soil mechanics; 9083: Two dimensional
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00492720
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-6191-809-X
• Files: ITRD, TRIS
• Created Date: Mar 31 1990 12:00AM