Periodic Mounts to Isolate the Vibrations of Automotive Vehicle Engine

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Accelerometer Shaker (a) Mount with geometrical discontinuity S. Asiri and A. A.N. Aljawi 106 Analyzer Amplifier Accelerometer Shaker Fig. 4. Experimental setup for evaluating the vibration transmission characteristics of the mounts. Analyzer Amplifiers Base (b) Mount with material discontinuity Motor Periodic Mount Speed Controller Fig. 5. Experimental setup for measuring vibration transmission with periodic mounts.
107 Periodic Mounts to Isolate Vibrations (a) ( b) (c) Fig. 6. Types of struts used during the experimental setup, (a) Plain Strut, (b) Geometrical Strut, (c) Material and Geometrical Discontinuity Strut. Table 1. The diameters and lengths of Aluminum and Rubber cells. Aluminum Rubber 3.3. Finite Element Modeling Diameter, mm 50 43 Length, mm In the present study, ANSYS FE code is employed to investigate the dynamic characteristics of the mounts. The specifications of the model shown in Fig. 7 are as follows: • Element type used is Solid Brick eight Node 92 for rigid bodies. • Material properties: the material properties used in the models is shown in Table 2. • Degrees of freedom: all models were constrained at X-Y directions. So one degree of freedom was applied which is translation in Z-direction. • Mesh type is smart size 6-default. • Solution: Modal Analysis and Harmonic Response Analysis. 20 15
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Periodic Mounts to Isolate the Vibrations of Automotive Vehicle Engine

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