Abstract:The impact resistance of marine gas turbine support structures has been receiving much attention. When the test of the whole gas turbine is difficult to complete, the strengthened impact test of the components of support structures were carried out is very necessary. This paper takes the rear support structure of a large marine gas turbine as the research object. Firstly, the boundary conditions and load characteristics of the rear support structures were analyzed by using local analysis method, considering the feasibility of the actual component test, a scale test model of the rear support was established. Secondly, the relationship between the original structure of the component and the impact response model is derived based on the theory of similarity. Finally, the impact test of scale test model was carried out, and the equivalent analysis of the impact response of the scaled test model test results, numerical simulation results and the original structure numerical simulation results. The results show that the established scale test model can reflect the impact response characteristics of the original structure, and the joint of the rear support structure is the weak part of the impact resistance.
韩璐1,2,张明远1,冯麟涵2,孟宪松1. 基于冲击响应等效的燃机支撑结构冲击试验研究[J]. 振动与冲击, 2020, 39(18): 242-247.
HAN Lu1,2,ZHANG Mingyuan1,FENG Linhan2,MENG Xiansong1. Impact test study of a gas turbine support structure based on impact response equivalence. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(18): 242-247.
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