基于ANSYS Workbench增压器叶轮结构有限元分析

Finite element analysis of Turbocharger impeller Based on ANSYS Workbench

涡轮增压器是一种以内燃机工作所产生的废气为驱动的空气压缩机[1]。涡轮增压器通过增压增加了气缸的进气量,提高燃油效率,增加了发动机的输出功率,改善发动机的性能,因而得到了广泛的应用。本文首先通过三维建模软件Solid Works建立叶轮模型,然后利用ANSYS Workbench对叶轮进行静力学分析和模态分析。静力学分析得到叶轮最大变形位置及最大变形量;模态分析得到叶轮的各阶固有频率及相应振型。对比增压器的工作时的激振频率与固有频率,避开率较大,不会发生共振。为后续叶轮优化设计提供理论依据。

Turbocharger is a gas compressor that is used for forced-induction of an internal combustion engine. Turbocharger has a broad application on the engine because it can improve the performance of an engine by compressing more air into the cylinders, making fuel burn more efficiently and helping the engine generate more power. In this paper, The impeller three-dimensional model is established by SolidWorks ; Based on the AYSYS Workbench software do research of the impeller on static analysis and modal analysis . Through static analysis, The maximum deformation areas and maximum deformation of the impeller are obtained ; Through modal analysis, The natural frequencies and mode shapes of the impeller are obtained. Comparing the excited frequencies and the natural frequencies of the impeller, and the avoid rate is far larger, so does not cause resonance. To provide the theoretical basis for the following optimization design.