initial condition是什么意思

initial condition是什么意思

initial condition
[英]iˈniʃəl kənˈdiʃən
[美]ɪˈnɪʃəl kənˈdɪʃən
初始条件
[例句]Small differences in the initial condition of a dynamical system may produce large variations in the long term behavior of the system.
在一个动力系统中，初始条件下微小的变化能带动整个系统的长期的巨大的连锁反应。

如果是在cae里面的话，是在：load module里面。取决于你的conditions的种类，可以是力，也可以是其它的，比如温度等等。 最好是在input file里面修改。 *initial conditions: specify initial conditions for the model. this option is used to prescribe initial conditions for an analysis. products: abaqus/standard abaqus/explicit abaqus/cfd abaqus/cae abaqus/aqua type: model data level: model abaqus/cae: load module defining initial conditions in abaqus/standard and abaqus/explicit reference: • “initial conditions in abaqus/standard and abaqus/explicit,” section 32.2.1 of the abaqus analysis user’s manual required parameter: type set type=acoustic static pressure to define initial static pressure values at acoustic nodes for use in evaluating the cavitation status of the acoustic element nodes in abaqus/explicit. set type=concentration to give initial normalized concentrations for a mass diffusion analysis in abaqus/standard. set type=contact to specify initial bonded contact conditions on part of the slave surface identified by a node set in an abaqus/standard analysis. set type=enrichment to specify initial location of an enriched feature, such as a crack, in an abaqus/standard analysis. two signed distance functions per node are generally required to describe the crack location, including the location of crack tips, in a cracked geometry. the first describes the crack surface while the second is used to construct an orthogonal surface so that the intersection of the two surfaces gives the crack front. the first signed distance function is assigned only to nodes of elements intersected by the crack while the second signed distance function is assigned only to nodes of elements containing the crack tips. no explicit representation of the crack is needed as the crack is entirely described by the nodal data. set type=field to specify initial values of field variables. the variable parameter can be used with this parameter to define the field variable number. the step and inc parameters can be used in conjunction with the file parameter to define initial values of field variables from a results (.fil) or output database (.odb) file. the step and inc parameters can also be used in conjunction with the file and output variable parameters to define initial values of field variables based on scalar nodal output variables read from an output database file.