Keyword factor EXCIT ==================== ◊ EXCIT = F (...) This keyword factor makes it possible to define a load for each occurrence. The operands have a meaning equivalent to those described in document [:external:ref:`U4.54.03 `] with the difference that, for the DYNA_LINE operator, it is not necessary to provide all the information concerning the second members, which is automatically calculated by the operator. Keyword CHARGE -------------- Load applied to the structure, previously defined using the AFFE_CHAR_MECA operator. The CHARGE keyword should only appear in the factor keyword occurrence if the TYPE_APPUI keyword is not present. Keywords TYPE_APPUI, DIRECTION, GROUP_NO ----------------------------------------- Keywords used in the case of seismic loads, please refer to the document [:external:ref:`U4.63.01 `] for more details. The TYPE_APPUI keyword should only appear in the factor keyword occurrence if the CHARGE keyword is not present. TYPE_APPUI = 'MONO' ~~~~~~~~~~~~~~~~~~~~~ ◊ TYPE_APPUI = 'MONO' The structure is excited uniformly at all supports. You must specify the direction of excitement *via* the keyword DIRECTION. TYPE_APPUI = 'MULTI' ~~~~~~~~~~~~~~~~~~~~~~ ◊ TYPE_APPUI = 'MULTI' Excitation is applied to only a portion of the supports. You must specify the direction of excitation *via* the keyword DIRECTION as well as the nodes concerned *via* the keyword GROUP_NO. Keyword DIRECTION ~~~~~~~~~~~~~~~~~~ ◊ DIRECTION = (DX, DY, DZ, DZ, DRX, DRZ, DRZ) Component of a vector giving the direction of the earthquake in the global coordinate system. Keyword GROUP_NO ~~~~~~~~~~~~~~~~~ ◊ GROUP_NO = g_knot List of the groups of nodes in the structure subjected to the excitation in the case with TYPE_APPUI. If TYPE_APPUI = 'MULTI', you must specify the keyword GROUP_NO. If TYPE_APPUI = 'MONO', the GROUP_NO keyword is not mandatory. However, the occurrences for the keyword GROUP_NOdevront will be the same for all occurrences of the keyword factor EXCIT. Operands FONC_MULT, COEF_MULT, FONC_MULT_C, COEF_MULT_C, ACCE,,, VITE, DEPL, PHAS_DEG, PUIS_PULS ------------------------------------------------------------------------------------------------ Multiplying coefficient or function of the assembled vector. In the transitory case, it is mandatory to provide a function of time. In the harmonic case, it is possible to provide a complex coefficient or function depending on the frequency. Refer to document [:ref:`U4.53.03 `] for more details on the use of these keywords.