通过建立某型防爆柴油机的排气歧管有限元模型,应用ANSYS软件对排气歧管进行了静力分析和结构模态分析,得出静力分析结果及在此应力下的频率和振型,并对主要振型进行描述。分析结果表明,静力分析中施加的载荷合理有效;比较该排气歧管的固有频率与接触件可知,其不会产生共振且结构设计合理,基本满足矿井下对车辆的使用要求,为进一步研究提供理论依据。 Through the establishment of a finite element model of the exhaust manifold of a certain type of explosion-proof diesel engine, static analysis and structural modal analysis of the exhaust manifold are carried out by using ANSYS software. The static analysis results and the frequency and mode shapes under this stress , And describes the main modes. The analysis results show that the load applied in the static analysis is reasonable and effective. Comparing the natural frequency of the exhaust manifold with the contacts shows that it will not resonate and the structure design is reasonable and basically meets the requirements of the vehicle under the mine. In order to further Research provides a theoretical basis.