Vibration Source Identification and Finite Element Model Construction of Optical Disk Drive

2012 ◽  
Vol 8 (1) ◽  
pp. 22-26
Author(s):  
Won-Seok Oh ◽  
Seung-Ho Lim ◽  
No-Cheol Park ◽  
Kyoung-Su Park ◽  
Young-Pil Park ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Source Identification ◽  
Disk Drive ◽  
Element Model ◽  
Optical Disk ◽  
Model Construction ◽  
Vibration Source ◽  
Optical Disk Drive

The Abnormal Vibration Source Analysis of Automobile Drive Axle

2012 ◽  
Vol 605-607 ◽  
pp. 1134-1137
Author(s):  
Chang Hai Yang ◽  
Nian Cheng Guo ◽  
Hai Sheng Song ◽  
Wen Ku Shi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Rear Axle ◽  
Element Model ◽  
Source Analysis ◽  
Bench Test ◽  
Vibration Source ◽  
First Order ◽  
Drive Axle

Through a Transmission bench test of a certain automobile Drive axle Assembly ,the abnormal vibration in Rear axle can be found. This paper establishes three demensions modle and Finite element model of the Rear Drive axle Assembly and calculates the modal of the Assembly and Axle housing respectively. It can be found that the frequency of the abnormal vibration in the Rear axle Bench test Coincides with the frequence of the Assembly First-order bending.It presents that it is the Assembly Resonance that leads to the abnormal vibration of Rear axle,not just Axle housing Resonance

Stress Analysis of the Adhesive Used in a Hard Disk Drive Bearing Assembly Using Finite Element Model

2012 ◽  
Vol 605-607 ◽  
pp. 405-410
Author(s):  
Ponthep Vengsungnle ◽  
Kiatfa Tangchaichit
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Adhesive Strength ◽  
Maximum Stress ◽  
Volume Fraction ◽  
Disk Drive ◽  
Element Model ◽  
Result Show ◽  
Nozzle Position ◽  
Bearing Assembly

The objective of this work is to determine the strength of the adhesive injected into the gap between the bearing and actuator arm surfaces under changes of nozzle position on the X and Y axis from the reference position using a finite element model. In this study, maximum stress and maximum shearing stress are used to indicate the adhesive strength. The minimum safety factor then is calculated to show the ratio of the yield strength to the maximum strength. The volume fraction is used to estimate the amount of adhesive on both parts of the bearing assembly. The result show, the maximum stress and strain peak for the case (0.25, 0.2) mm, σmax= 554.4 MPa, τmax= 319.6 MPa and Sfmin= 0.10. Setting the nozzle position to coordinates (0.2, 0.3) mm gave the lowest stress, σmax= 69.0 MPa, τmax= 39.2 MPa and Sfmin= 0.63. The nozzle position significantly affects the adhesive strength. If the nozzle is moved closer to the actuator arm, the stress distribution is better than placing the nozzle near the bearing. Therefore the suitable position for injection is (0.20, 0.30) mm, while the worst poor position is (0.25, 0.2) mm.

Sign in / Sign up

Export Citation Format

Share Document