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Fig. 6 is obtained by Tylor Hobson CCI (UK) with nanometer resolution. As shown in Table 2, the wear depth and wear width are within 6 ¦Ìm and 1 mm, respectively. Thus, the slider surface can still be regarded as flat and the Hertz solution is still applicable. Besides£¬Figure 2 shows the contact between the roller and the slider. The indentation depth is linearly proportional to the contact force, which can be written as [7]
d=4F/£¨3.14EL£©=(4¡Á151)/(3.14¡Á2.06¡Á¡¼10¡½^9¡Á0.007)¡Ö13.34¦Ìm
The indentation width can be obtained as [9]
2a=2¡Ì2Rd=2¡Ì(2¡Á0.02¡Á13.34¡Á¡¼10¡½^(-6) )¡Ö1.461mm
The wear depth (5.418 ¦Ìm) is less than the indentation depth (13.34 ¦Ìm) and the wear width (0.931 mm) is also less than the indentation width (1.461 mm). Thus the Hertz solution is still applicable.

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2Â¥: Originally posted by pingcne at 2015-07-31 21:55:53
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