Title :
An identification method of stiffness of mechanical joint
Author :
Jinjuan, Zhao ; Shijun, Wang ; Jingzhi, Ma ; Pu, Guo
Author_Institution :
Inst. of Printing & Packaging Instrum. Eng., Xi´´an Univ. of Technol., Xi´´an, China
Abstract :
A method based on finite element model is presented that is used to identify stiffness of mechanical joint. By means of shock excitation, response of the system is obtained in which joints are included. Fourier Transform is used to obtained response spectrum of system. Based on FEM, the system model including joints is build and then low order natural frequencies are obtained by modal analysis. Natural frequencies of finite element model are compared with resonance frequencies from response spectrum, data of joint stiffness in finite element model are modified. Through iterative computations, suitable data of joint stiffness are identified. Experiment result shows that the method is valid.
Keywords :
Fourier transforms; couplings; elasticity; finite element analysis; iterative methods; modal analysis; shock waves; FEM; Fourier transform; finite element model; identification method; iterative computations; mechanical joint; modal analysis; resonance frequencies; response spectrum; shock excitation; stiffness; Damping; Fasteners; Finite element methods; Joints; Resonant frequency; Shape; Vibrations; Joint; Modal analysis; Parameter identification; Stiffness;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768606
