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METHOD FOR MODELLING AN ELEMENT OF A STRUCTURE USING FINITE ELEMENTS

机译:用有限元建模结构元素的方法

摘要

A method simulates behavior of a structure by finite element calculation in which a global model represents the structure, a local model represents an area of the structure including geometric details, and an auxiliary model represents the area without the geometric details. The method includes determining by finite element calculation in the global model of a nodal displacement field corresponding to a loading applied to the global model; applying the nodal displacement field to the local and auxiliary models and determining the corresponding forces; calculating a correction when convergence of the solution obtained for the global model is not achieved, and the applying is resumed with a nodal displacement field calculated in the global model after implementing the correction; determining values of internal variables for the different loading increments; and assessing the evolution in the behavior of the structure over time as a function of these values.
机译:一种方法通过有限元计算来模拟结构的行为,其中全局模型表示结构,局部模型表示包括几何细节的结构区域,辅助模型表示没有几何细节的区域。该方法包括通过有限元计算在全局模型中确定与施加到该全局模型上的载荷相对应的节点位移场。将节点位移场应用于局部和辅助模型并确定相应的力;当未获得针对全局模型获得的解的收敛性时,计算校正量,并在实施校正后,利用在全局模型中计算出的节点位移场重新开始应用;确定不同加载增量的内部变量值;并评估这些值随时间变化的结构行为。

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