Initialize_State

Purpose

initialize state variables of structural model and create STATE

Synopsis

State = Initialize_State (Model,ElemData)

Description

INITIALIZE_STATE initialize state variables of structural model and create STATE    
  INITIALIZE_STATE (MODEL,ELEMDATA)
  function initializes the displacement, velocity and acceleration vectors
  for the structural model with information in data structure MODEL;
  the cell array ELEMDATA supplies the element property data for element history initialization;
  the function returns data structure STATE with the following fields
  STATE.U       = global dof total displacement vector
        DU      = global dof displacement increments from last convergence
        DDU     = global dof displacement increments from last iteration
        Udot    = global dof velocity vector
        Udotdot = global dof acceleration vector
        Past    = data structure of last    element history variables in cell array Elem
        Pres    = data structure of current element history variables in cell array Elem

Cross-Reference Information

This function calls:

• Structure performs requested action on group of elements

• S_BucklingLoad general script for determining the buckling load of a structural model
• S_Initialize script for initializing State and SolStrat
• LinearStep sets up and solves the structure equilibrium equations for single load step
• S_InitialStep script for initial step of incremental analysis
• S_MultiStep script for multi-step incremental analysis after load factor initialization
• S_MultiStep_wLoadHist script for multi-step incremental analysis under given load history(ies)
• S_MultiStep_wLoadHistwSD script for multi-step incremental analysis under given load history(ies)
• S_Transient_MultiStep script for multi-step transient analysis under given load history(ies)
• S_Transient_MultiStepwSD script for multi-step transient analysis under given load history(ies)