2006•Journal of Agricultural Mechanization ResearchRequires access

Theoretical Modal and Experimental Modal Analysis of SF480 Engine Block

Yuan Wen-hua

Abstract

The study on dynamic characteristic of SF480 engine block is performed with Finite Element Analysis Method and modal experiment. First, the 3D solid model of engine block is formed in Pro/E and then imported into ANSYS for meshing, and last modal resolution is obtained with Subspace Method. Then, modal experiment of engine block is carried out with impulse excitation method and corresponding low order modal parameters are obtained. Through comparison on natural frequencies and mode shape from theoretic modal analysis and modal experiment, laws governing engine block vibration are analyzed, which settled bases for the engine optimization.

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Key concepts: Modal analysis using FEM, Modal, Modal testing, Modal analysis, Finite element method, Vibration, Cylinder block, Block (permutation group theory)