崔志琴, 苏铁熊, 赵冬青, et al. 复杂组合结构的有限元模态分析[J]. 2001, (3).
DOI:
崔志琴, 苏铁熊, 赵冬青, et al. 复杂组合结构的有限元模态分析[J]. 2001, (3).DOI:
复杂组合结构的有限元模态分析
摘要
目的 建立某大功率柴油机机体 +曲轴组合结构的有限元模型
并对其进行有限元模态分析 .方法 应用动态子结构法建立有限元模型
用虚拟材料来模拟其结合面的动态性能 .结果 计算出前 5阶固有频率和主振型
与试验结果比较吻合 .结论 说明所建机体 +曲轴组合结构的有限元模型正确
为其下一步的动力学仿真研究奠定了基础
Abstract
Aim\ The finite element model of the combined structure of block of a heavy duty diesel with crankshaft is established for modal analysis. Methods\ The dynamic substructuring method is applied to establish the finite element model
and virtual material is applied to simulate the dynamic characteristics of interface between the complex combined structure. Results\ The first five natural frequencies and the modal shape calculated with this modelis very close to the experimental result. Conclusion\ The finite element model is correct
and a basis for the dynamic simulation study for the engine is provided.