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Modal analysis on engine block combination structure of a piston engine

Lian Yong-qing

Abstract

The three dimensional model on engine block combination structure of a piston engine is established by the ANSYS software,and the modal analysis is carried out in the case of constrained model.Through the analysis,the inherent frequencies and mode shapes of the first 20 order modes are obtained respectively.The results show the relative distribution of the vibration magnitude in the whole block and reveal the characteristics of modes in various frequency bands,which provide necessary guides for dynamic response analysis of the engine block.

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Available abstract

Key concepts: Cylinder block, Modal analysis, Piston (optics), Block (permutation group theory), Modal, Vibration, Finite element method, Mode (computer interface)