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Stress analysis of the adhesive used in a Hard Disk Drive bearing assembly using finite element model

机译：使用有限元模型的硬盘驱动器轴承组件中使用的粘合剂的应力分析

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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, σ_(max) = 554.4 MPa, τ_(max) = 319.6 MPa and Sf_(min) = 0.10. Setting the nozzle position to coordinates (0.2, 0.3) mm gave the lowest stress, σ_(max) = 69.0 MPa, τ_(max) = 39.2 MPa and Sf_(min) = 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.
机译：该工作的目的是确定在使用有限元模型的参考位置的X和Y轴的喷嘴位置的变化下，从参考位置确定注入轴承和致动器臂表面之间的间隙中的粘合剂的强度。在该研究中，最大应力和最大剪切应力用于表示粘合强度。然后计算最小安全系数以显示屈服强度与最大强度的比率。体积分数用于估计轴承组件的两个部分上的粘合剂的量。结果表明，壳体的最大应力和应变峰（0.25,0.2）mm，σ_（max）= 554.4MPa，τ_（max）= 319.6 mpa和sf_（min）= 0.10。将喷嘴位置设置为坐标（0.2,0.3）mm给出最低应力，σ_（max）= 69.0 mpa，τ_（max）= 39.2 mpa和sf_（min）= 0.63。喷嘴位置显着影响粘合强度。如果喷嘴更靠近致动器臂，则应力分布优于将喷嘴放在轴承附近。因此，注射的合适位置是（0.20,0.30）mm，而最差的位置差（0.25,0.2）mm。

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