CAJ | 학술논문

通过有限元软件，对轴流压缩机机壳的静力及热稳态运行时的温度场、应力场和变形场进行了有限元分析。静力分析结果显示，机壳在静载作用下的变形及应力均不大，满足设计要求。热应力分析表明：机壳大部分区域等效应力较低，中腔到排气腔的过渡处及排气腔法兰处应力较高，最大应力值为922MPa，超过了材料的屈服强度；机壳在热膨胀的作用下，排气腔直径扩张19mm 左右，并且，机壳有较大的轴向伸长，应加强机壳相应部位的强度及刚度，保证机壳安全可靠地运行。分析结果为轴流压缩机机壳的优化提供了参考。
통과유한원연건，대축류압축궤궤각적정력급열은태운행시적온도장、응력장화변형장진행료유한원분석。정력분석결과현시，궤각재정재작용하적변형급응력균불대，만족설계요구。열응력분석표명：궤각대부분구역등효응력교저，중강도배기강적과도처급배기강법란처응력교고，최대응력치위922MPa，초과료재료적굴복강도；궤각재열팽창적작용하，배기강직경확장19mm 좌우，병차，궤각유교대적축향신장，응가강궤각상응부위적강도급강도，보증궤각안전가고지운행。분석결과위축류압축궤궤각적우화제공료삼고。
Static analysis and the temperature filed, stress field and deformation filed of axial compressor casing under the condition of hot steady-state operation were analyzed by the finite element software. Static analysis results show that the deformation and the stress of casing under static loading are not too large and meet the design requirements. Thermal stress analysis show that most areas of the casing have a low stress, the transition of middle chamber and discharge chamber and discharge chamber flange has a relative large stress, the maximum stress is 922MPa, which exceeds the yield strength of the material. The diameter of the casing’s discharge chamber increases about 19mm due to the thermal expansion, and the casing occurs greater axial elongation. Strength and stiffness of casing should be improved to ensure that the casing can be able to operate safely and reliably. The analysis results of the axial compressor casing provide a strong reference for the optimization of it.