Investigation into Joint Stiffness for Finite Element Modelling of the Dynamic Behaviour of a Structure with Bolted Joints

1st South Aceh International Conference on Engineering and Technology

工业技术（总论）

Omar, R.^1^2 ; Abdul Rani, M.N.^1 ; Yunus, M.A.^1 ; Wan Iskandar Mirza, W.I.I.^1 ; Mohd Zin, M.S.^1

Structural Dynamics Analysis and Validation, Faculty of Mechanical Engineering, Universiti Teknologi MARA (UiTM), Selangor, Shah Alam

40000, Malaysia^1

Machinery Technology Centre, SIRIM Industrial Research, Hulu Selangor, Selangor

44200, Malaysia^2

关键词: Assembled structures;    Dynamic behaviours;    Experimental modal analysis;    FE-modelling;    Finite element modelling;    Joint stiffness;    Natural frequencies and modes;    Total errors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/506/1/012009/pdf
DOI  :  10.1088/1757-899X/506/1/012009

学科分类：工业工程学

来源: IOP

【 摘 要 】

Accurate representation of the joint stiffness of bolted joints in the finite element (FE) model of a jointed structure is vital to ensure the accuracy and reliability of the predicted dynamic behaviour of the structure. The aim of this work was to put forward an efficient FE modelling method embodying the representation of the joint stiffness for the investigation of an assembled structure with bolted joints. The predicted FE results were compared with those obtained from the experimental modal analysis (EMA). EMA was performed to measure the natural frequencies and mode shapes of the structure with bolted joints. The calculated total error from the comparison of the natural frequencies between the FE and EMA were recorded. The results of the investigation showed that there is a noticeable contribution of the joint stiffness in the representation of the structure with bolted joints in developing the efficient FE modelling method.