03459nas|a2200445 i 4500 20260818094236.0 030822s2003 th uzm rtt 00| a1eng d .b11895251 AIT Thesis no. ST-03-34 Dinh Van Nguyen Dynamic analysis of framed structures with daming using eigenvector and load dependent ritz vector bases Bangkok : Asian Institute of Technology, 2003 81 leaves Thesis ; no. ST-03-34 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 2003 The superposition of eigenvectors from subspace and Lanczos eigensolvers was implemented, investigated and yielded accurate response with computational efficiency. A static correction technique accounting for all higher modes as static effects were applied to increase accuracy and stability of the method. A load dependent Ritz vector algorithm was programmed and examined for various types of frames. Those Ritz vectors are proved to account for spatial distribution of loads, only a small number of vectors can approximate the response of the structure. More approachable to practical structures, a nonproportional damping solution by the combination of vector superposition and pseudo force methods was worked out and tested for structures with externally nonproportional damping modeled by discrete dampers. By vector superposition analysis, the real behaviors of the structure under loading are well visualized. The accuracy and operational time of the calculation process can be controlled showing that the vector superposition method is a good choice for dynamic analysis of large structures. Furthermore, originating from the advantages of vector superposition method and from LD Ritz vectors, a nonlinear dynamic analysis algorithm based on Newmark's integration scheme using updated LD Ritz vector basis was proposed and has preliminarily been implemented. Structural frames Structural dynamics Eigenvectors Kim, Kidu, Chairperson Pichai Nimityongskul, Examination Committee Pennung Warnitchai, Examination Committee Asian Institute of Technology, Scholarship donor Vietnam Ministry of Education and Training (MOET), Scholarship donor Asian Institute of Technology. Thesis ; no. ST-03-34 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08250 .b11895251 mnait u 240404 0 030822 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120819726 CREATED : 2002-03-25 RECORD # : i12348387 LPATRON : 1026563 LCHKIN : 2016-08-25 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 4 TOT RENEW : 0 Barcode : 30050120384812 CREATED : 2002-03-25 RECORD # : i12348399 LPATRON : 1023673 LCHKIN : 2013-03-28 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 4 TOT RENEW : 4 Barcode : 30050160068002 CREATED : 2016-04-19 RECORD # : i12937290 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 31897 31897 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. ST-03-34 30050120819726 2026-08-18 09:42:36 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. ST-03-34 30050120384812 2026-08-18 09:42:36 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. ST-03-34 30050160068002 2026-08-18 09:42:36 1 2026-08-18 40