××－2发动机本体的试验模态分析

AN EXPERIMENTAL MODAL ANALYSIS OF ××-2 ENGINE

关键词:  涡轮喷气发动机  模态分析  模态振动试验

Key words:  Turbojet engine  Modal analysis  Modal vibration test

摘要:

介绍了脉冲激励法（锤击法）模态试验系统。该法设备简单，使用方便，移动施力部位容易，可以在不允许安装激振器的部位实现激振，具有许多明显的优点。试验结果可提供给导弹总体设计部门，以检验发动机与弹体配匹的结构动态特性，并可供发动机振动分析之用。

Abstract:

The pulse-excitation method (hammer-excitation method) for modal test is introduced,demonstrating following advantages:simple equipment and installations, convenient manipulation and easy excitation point movement,which makes the excitation realized in such positions where installation of exciters are not permited. The tested results will be submitted to the genaral design department of× × missile to check structural dynamic properties of the engine fitting to the missile, also will be used for vibration analysis of the engine.