DRHA

文档DRHA函数。

helpFun('DRHA')

动态Response History Analysis (DRHA) of a SDOF system [U,V,A,F,ES,ED] = DRHA(K,M,DT,XGTT,KSI,U0,UT0,RINF) Description Determine the time history of structural response of a SDOF system Input parameters K [double(1 x 1)] is the stiffness of the system. M [double(1 x 1)] is the lumped masses of the structure. DT [double(1 x 1)] is the time step of the response history analysis from which the response spectrum is calculated XGTT [double(1:nstep x 1)]: column vector of the acceleration history of the excitation imposed at the base. nstep is the number of time steps of the dynamic response. KSI [double(1 x 1)] is the ratio of critical damping of the SDOF system. Default value 0.05. U0 [double(1 x 1)] is the initial displacement of the SDOF system. Default value 0. UT0 [double(1 x 1)] is the initial velocity of the SDOF system. Default value 0. RINF [double(1 x 1)] is the minimum absolute value of the eigenvalues of the amplification matrix. For the amplification matrix see eq.(61) in Zhou & Tamma (2004). Default value 1. Output parameters U [double(1 x 1:nstep)]: displacement time history. V [double(1 x 1:nstep)]: velocity time history. A [double(1 x 1:nstep)]: acceleration time history. F [double(1 x 1:nstep)]: equivalent static force time history. ES [double(1 x 1:nstep)]: time-history of the recoverable strain energy of the system (total and not incremental). ED [double(1 x 1:nstep)]: time-history of the energy dissipated by viscoelastic damping during each time step (incremental). cumsum(Ed) gives the time history of the total energy dissipated at dof i from the start of the dynamic analysis. __________________________________________________________________________ Copyright (c) 2018-2022 George Papazafeiropoulos Major, Infrastructure Engineer, Hellenic Air Force Civil Engineer, M.Sc., Ph.D. Email: gpapazafeiropoulos@yahoo.gr _________________________________________________________________________

Published with MATLAB® R2017b