Abstract Non-linear finite element analyses have intrinsic model and user factors that influence the results of the analyses. However, non-linear finite element analysis can provide a tool to assess safety using realistic descriptions of material behaviour with actual material properties. A realistic estimation of the existing safety and capacity of slender column elements can be achieved by means of “true” material properties. Nevertheless, it seems that for some structural components, such as slender columns, non-linear finite element analyses can, due to its complexity and its various setting parameters, cause the risk of overestimating the real performance of analysed components or systems. Hence, an invited expert group has carried out an investigation into the experimental testing and the prediction of the bearing capacity of slender columns by performing independent non-linear finite element analyses in order to determine the practical applicability, and its inconsistencies, with respect to the stability failure of slender columns. This work aims the characterization of modelling uncertainties, concerning the prediction of slender columns stability when forecasted by non-linear finite element analysis.

中文翻译：

---

使用经典和先进的非线性数值和分析预测工具对细长柱的承载能力进行循环建模

摘要 非线性有限元分析具有影响分析结果的内在模型和用户因素。然而，非线性有限元分析可以提供一种工具来使用实际材料特性的材料行为的真实描述来评估安全性。通过“真实”的材料特性，可以对细长柱元件的现有安全性和容量进行现实估计。然而，对于某些结构部件，例如细长柱，非线性有限元分析由于其复杂性和各种设置参数，似乎可能导致高估所分析部件或系统的实际性能的风险。因此，受邀专家组通过独立的非线性有限元分析，对细长柱承载力的试验测试和预测进行了调查，以确定稳定性破坏的实际适用性及其不一致性细长的柱子。这项工作旨在表征建模不确定性，涉及通过非线性有限元分析预测细长柱稳定性。