The widespread use of finite element models in assessing system dynamics for noise, vibration, and harshness (NVH) evaluation has led to recognition of the need for improved procedures for correlating models to experimental results. This study develops and applies a methodology to correlate an experimental modal analysis with a finite element modal analysis of valve trains in IC-engines. A pre-test analysis procedure is employed to guide the execution of tests used in the correlation process. This approach improves the efficiency of the test process, ensuring that the test article is neither under nor over-instrumented. The test-analysis model (TAM) that results from the pre-test simulation provides a means to compare the test and the model both during the experimental approach and during the model updating process. The validity of the correlation methodology is demonstrated through its application on the valve train of a single overhead cam (SOHC) engine.
Worcester Polytechnic Institute
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Giorelli, Massimo, "Methodology for Correlating Experimental and Finite Element Modal Analyses on Valve Trains" (2002). Masters Theses (All Theses, All Years). 323.
correlation, modal analysis, valve train, Internal combustion engines, Valves, Testing, Finite element method