对高速大功率柴油机用气缸盖机械负荷有限元rn分析边界条件施加方式的探讨

摘要

边界条件的复杂性，使气缸盖的精确有限元分析存在较大困难。本文针对高速大功率柴油机整体式气缸盖的机械负荷有限元分析，探讨了支撑件——机体以及紧固件——螺栓对气缸盖作用的不同仿真方式对分析结果的影响，得出了对提高气缸盖有限元分析精度具有实用价值的结论。文中对采用的有限元网格模型进行了离散误差分析。%Due to the presence of complicated boundary conditions, it is often difficult to apply an accurate finite element analysis on cylinder heads. The paper discusses different cases of cylinder blocks and bolts under simulation. Some conclusions useful for increasing the accuracy of analysis are summarized. Discrete errors of the model adopted are analyzed.