195柴油机飞轮组有限元分析.doc

目 录 摘 要··································································Ⅲ ABSTRACT····························································Ⅳ 1 前 言 1.1 195柴油机飞轮组有限元分析的目的及意义································1 1.2 195柴油机飞轮组有限元分析研究历史、现状和发展························2 1.3 本课题研究的主要内容·················································3 2 飞轮组的概述和受力 2.1 195柴油机飞轮组概述··················································4 2.1.1 195柴油机飞轮螺栓的材料 ···········································4 2.1.2 195柴油机飞轮螺栓的工作条件 ·······································4 2.2 195柴油机飞轮的概述···················································4 2.3 195柴油机飞轮螺栓的受力分析··········································5 2.3.1 195柴油机飞轮螺栓的预紧力 ·········································5 2.3.2 195柴油机飞轮螺栓承受的曲轴扭矩····································6 2.3.3 195柴油机飞轮螺栓承受的飞轮的惯性力矩······························6 2.4 195柴油机汽缸内的气体作用力···········································6 2.5 195柴油机曲轴的输出扭矩 ·············································8 3 飞轮组三维实体建模 3.1 Pro/E软件简介························································10 3.2 195柴油机飞轮的三维实体建模··········································11 3.3 195柴油机曲轴轴颈端的三维实体建模····································13 3.4 195柴油机飞轮螺栓连接螺母的三维实体建模······························14 3.5 195柴油机飞轮螺栓连接各实体模型的装配································15 3.6 建立有限元模型的策略和考虑的一般问题·································17 3.7 有限元模型的简化·····················································18 4 飞轮组有限元分析 4.1 有限元分析法及ANSYS软件应用简介···································20 4.2 195柴油机飞轮组简化模型导入ANSYS··································21 4.3 195柴油机飞轮组有限元模型网格划分的概述·····························24 4.3.1 网格划分的数量····················································25 4.3.2 网格划分的修改····················································25 4.3.3 网格划分的质量····················································25 4.3.4 网格的分界面和分界点··············································26 4.4 195柴油机飞轮组有限元模型网格划分的步骤·····························26 4.5 195柴油机飞轮组有限元模