Impact technique for measuring global dynamic stiffness of engine mounts

Autor:	Zaidi Mohd Ripin, Lu-Ean Ooi
Rok vydání:	2014
Předmět:	Engineering business.industry Vibration control Stiffness Structural engineering Vertical orientation Computer Science::Robotics Shear (sheet metal) Vibration isolation Automotive Engineering medicine Point (geometry) medicine.symptom business Actuator Stiffness matrix
Zdroj:	International Journal of Automotive Technology. 15:1015-1026
ISSN:	1976-3832 1229-9138
Popis:	Engine mounts are used for engine vibration isolation. The dynamic performance of the mount depends on the orientation. Measurements of the dynamic properties of engine mounts are usually performed in the axial direction because of the problem related to actuator loading direction and set up costs. Impact technique is developed here to measure the dynamic driving point stiffness and driving point shear stiffness of engine mount in a single setup. The compressive and shear frequency-dependent stiffnesses are obtained in the vertical orientation. A transformation matrix is used to calculate the frequency-dependent stiffnesses and loss factors in other orientations. Three different designs of engine mounts are used to verify the accuracy of the transformation model. The correlation coefficient between calculation and measurement results show R2≥ 0.995 along the X- and Y-axes. For the Z-axis, mounts B and C showed R2≥ 0.95 and mount A 0.687 ≤ R2≤ 0.791.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::94316a1613ea732f35cb666e48a9e270 https://doi.org/10.1007/s12239-014-0106-7 Zobrazit plný text záznamu Full text from SpringerLink