Elastodynamic Inversion of Multilayered Media via Surface Waves
A rigorous theoretical foundation for solving elastodynamic inverse problem of multilay -ered media under an impulse load is established in this paper. The inversion is built upon the forward dynamic analysis of multilayered elastic media using transfer matrix approach , with which displacement continuity is assumed at the interfaces of upper and lower adjacent layers . Formulations for inverse analysis are derived in both the time domain and the complex frequency domain. Least square estimates and nonlinear optimization algorithms are used to implement parameter identifica -tion. The proposed theory and formulae can be utilized to develop computer software for nondestruc -tive evaluation of laminated civil and aerospace structure (highway and airport pavements , bridge decks,soil foundations,aircraft wing,etc) ,exploration and dynamic source detection and identification, and petroleum exploration in geophysics.
Lu SUN Feiquan LUO Wenjun GU
Transportation College ,Southeast University ,Nanjing 210096, China Department of Civil Engineering , Catholic University of America ,620 Michigan Ave.N.E.,Washington D
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
10-16
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）