往复式压缩机管道振动的ANSYS分析

针对常见的压缩机管道振动情况，通过分析得出其主要原因可能是管系结构固有频率与激发主频率相近而造成共振。通过理论计算得到压缩机的前8阶激发主频率，再利用ANSYS分析软件对管系进行模态分析，得到系统的低阶固有频率和振型，从而验证了在较低阶情况下激发主频率与结构固有频率处于共振区。并且在不改变管系主要特征的基础上，给出了简单易行的减振措施，对实践具有重要的指导意义。

Vibration Analysis for Piping Connected with Reciprocating Compressor by Using ANSYS

With respect to the vibration commonly occurred in compressor piping, the analysis was carried out in this article. The main cause was probably that the inherent frequency of piping system is close to the excitation frequency so as to form resonance. By theoretical calculation, the former eight frequencies excited from the compressor were obtained. Then, by using ANSYS, the modal analysis for the inherent frequency of the piping system was carried out, from which the low inherent frequency and vibration modals of the system were also obtained. Based on the analysis, the fact that the inherent frequency of the piping system falls into the resonance area has been verified. Finally, a feasible method to reduce this vibration on the basis of keeping the major character was presented, which may has significance in practical engineering.