ICS27.140 CCSP26 NB 中华人民共和国能源行业标准 NB/T11924—2025 水电工程金属结构有限元数值分析导则 Guideforfiniteelementanalysisofhydraulicsteelstructuresfor hydropowerprojects （报批稿） 2025-12-18发布 2026-06-18实施 国家能源局发布I目次 前言.......................................................................................................................................................III 引言.......................................................................................................................................................IV 1范围.........................................................................................................................................................1 2规范性引用文件.....................................................................................................................................1 3术语和定义.............................................................................................................................................2 4总体要求.................................................................................................................................................6 5分析流程.................................................................................................................................................7 6几何模型创建及网格划分.....................................................................................................................8 6.1坐标系选择......................................................................................................................................8 6.2几何模型创建..................................................................................................................................8 6.3网格划分..........................................................................................................................................9 6.4模型检查........................................................................................................................................10 7本构模型及材料参数............................................................................................................................11 7.1本构模型........................................................................................................................................11 7.2材料参数........................................................................................................................................11 8边界条件施加.......................................................................................................................................12 8.1荷载................................................................................................................................................12 8.2约束................................................................................................................................................12 9计算分析...............................................................................................................................................20 9.1静力学分析....................................................................................................................................20 9.2动力学分析....................................................................................................................................20 9.3屈曲分析........................................................................................................................................21 10结果输出及评价.................................................................................................................................22 10.1计算评估......................................................................................................................................22 10.2结果输出......................................................................................................................................22 10.3安全评价......................................................................................................................................23