Operational Shock Analysis for 2.5-in Multi-Disk HDD Considering Ramp-Disk Gap Irregularity
With an increased mobility, hard disk drives (HDDs) now use ramp load/unload technology, and multiple disks are used to increase the data capacity. This can result in contact between the ramp and the disks, which negatively affects the slider dynamics under operational shock conditions. There are se...
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Veröffentlicht in: | IEEE transactions on magnetics 2017-03, Vol.53 (3), p.1-4 |
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description | With an increased mobility, hard disk drives (HDDs) now use ramp load/unload technology, and multiple disks are used to increase the data capacity. This can result in contact between the ramp and the disks, which negatively affects the slider dynamics under operational shock conditions. There are several types of ramp-disk contact, such as simultaneous, successive, and single contact, and these depend on the distance between the ramp and each disk in a multi-disk HDD. This paper examines the effect of ramp-disk contact on the slider dynamics using a transient shock analysis. The ramp-disk contact affects the head stack assembly bending mode and slider dynamics. The effect of irregular gaps between the disks and adjacent ramp on the slider dynamics is analyzed with the ramp-disk contact force. The simulation shows that the gap irregularity between the ramp and each disk should be as small as possible to improve the stability of the slider dynamics. |
doi_str_mv | 10.1109/TMAG.2016.2622739 |
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This can result in contact between the ramp and the disks, which negatively affects the slider dynamics under operational shock conditions. There are several types of ramp-disk contact, such as simultaneous, successive, and single contact, and these depend on the distance between the ramp and each disk in a multi-disk HDD. This paper examines the effect of ramp-disk contact on the slider dynamics using a transient shock analysis. The ramp-disk contact affects the head stack assembly bending mode and slider dynamics. The effect of irregular gaps between the disks and adjacent ramp on the slider dynamics is analyzed with the ramp-disk contact force. The simulation shows that the gap irregularity between the ramp and each disk should be as small as possible to improve the stability of the slider dynamics.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2016.2622739</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>IEEE</publisher><subject>Analytical models ; Dynamics ; Electric shock ; Force ; Frequency-domain analysis ; Gap difference ; head stack assembly (HSA) bending mode ; Numerical models ; ramp–disk contact ; slider dynamics ; Springs</subject><ispartof>IEEE transactions on magnetics, 2017-03, Vol.53 (3), p.1-4</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7725490$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7725490$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Joo Young Yoon</creatorcontrib><creatorcontrib>Jonghak Choi</creatorcontrib><creatorcontrib>Geonyun Lim</creatorcontrib><creatorcontrib>No-Cheol Park</creatorcontrib><creatorcontrib>Young-Pil Park</creatorcontrib><creatorcontrib>Kyoung-Su Park</creatorcontrib><creatorcontrib>Minjae Kim</creatorcontrib><title>Operational Shock Analysis for 2.5-in Multi-Disk HDD Considering Ramp-Disk Gap Irregularity</title><title>IEEE transactions on magnetics</title><addtitle>TMAG</addtitle><description>With an increased mobility, hard disk drives (HDDs) now use ramp load/unload technology, and multiple disks are used to increase the data capacity. This can result in contact between the ramp and the disks, which negatively affects the slider dynamics under operational shock conditions. There are several types of ramp-disk contact, such as simultaneous, successive, and single contact, and these depend on the distance between the ramp and each disk in a multi-disk HDD. This paper examines the effect of ramp-disk contact on the slider dynamics using a transient shock analysis. The ramp-disk contact affects the head stack assembly bending mode and slider dynamics. The effect of irregular gaps between the disks and adjacent ramp on the slider dynamics is analyzed with the ramp-disk contact force. The simulation shows that the gap irregularity between the ramp and each disk should be as small as possible to improve the stability of the slider dynamics.</description><subject>Analytical models</subject><subject>Dynamics</subject><subject>Electric shock</subject><subject>Force</subject><subject>Frequency-domain analysis</subject><subject>Gap difference</subject><subject>head stack assembly (HSA) bending mode</subject><subject>Numerical models</subject><subject>ramp–disk contact</subject><subject>slider dynamics</subject><subject>Springs</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNotjktOwzAYhC0EEqFwAMTGF3D47fhRL6MW0kqtKkFZsajsxCmmaRLZ6SK3J1JZzYw-zWgQeqaQUgr6db_Ni5QBlSmTjKlM36CEak4JgNS3KAGgc6K55PfoIcbfKXJBIUHfu94FM_iuNQ3-_OnKE84nO0Yfcd0FzFJBfIu3l2bwZOnjCa-WS7zo2ugrF3x7xB_m3F9JYXq8DsEdL40Jfhgf0V1tmuie_nWGvt7f9osV2eyK9SLfEE-VGIiSlTY8E07yypaWS8undxJ4ZpVltTBz5pSjTHBRSltVlmqna2WodEwB6GyGXq673jl36IM_mzAelJoaGrI_SoxQtQ</recordid><startdate>201703</startdate><enddate>201703</enddate><creator>Joo Young Yoon</creator><creator>Jonghak Choi</creator><creator>Geonyun Lim</creator><creator>No-Cheol Park</creator><creator>Young-Pil Park</creator><creator>Kyoung-Su Park</creator><creator>Minjae Kim</creator><general>IEEE</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope></search><sort><creationdate>201703</creationdate><title>Operational Shock Analysis for 2.5-in Multi-Disk HDD Considering Ramp-Disk Gap Irregularity</title><author>Joo Young Yoon ; Jonghak Choi ; Geonyun Lim ; No-Cheol Park ; Young-Pil Park ; Kyoung-Su Park ; Minjae Kim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i175t-76d9a435e64dbcb46b40146043b7b2f5a82e7e12545c6bddb19e9f7a16e270093</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Analytical models</topic><topic>Dynamics</topic><topic>Electric shock</topic><topic>Force</topic><topic>Frequency-domain analysis</topic><topic>Gap difference</topic><topic>head stack assembly (HSA) bending mode</topic><topic>Numerical models</topic><topic>ramp–disk contact</topic><topic>slider dynamics</topic><topic>Springs</topic><toplevel>online_resources</toplevel><creatorcontrib>Joo Young Yoon</creatorcontrib><creatorcontrib>Jonghak Choi</creatorcontrib><creatorcontrib>Geonyun Lim</creatorcontrib><creatorcontrib>No-Cheol Park</creatorcontrib><creatorcontrib>Young-Pil Park</creatorcontrib><creatorcontrib>Kyoung-Su Park</creatorcontrib><creatorcontrib>Minjae Kim</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library Online</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Joo Young Yoon</au><au>Jonghak Choi</au><au>Geonyun Lim</au><au>No-Cheol Park</au><au>Young-Pil Park</au><au>Kyoung-Su Park</au><au>Minjae Kim</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Operational Shock Analysis for 2.5-in Multi-Disk HDD Considering Ramp-Disk Gap Irregularity</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>2017-03</date><risdate>2017</risdate><volume>53</volume><issue>3</issue><spage>1</spage><epage>4</epage><pages>1-4</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>With an increased mobility, hard disk drives (HDDs) now use ramp load/unload technology, and multiple disks are used to increase the data capacity. This can result in contact between the ramp and the disks, which negatively affects the slider dynamics under operational shock conditions. There are several types of ramp-disk contact, such as simultaneous, successive, and single contact, and these depend on the distance between the ramp and each disk in a multi-disk HDD. This paper examines the effect of ramp-disk contact on the slider dynamics using a transient shock analysis. The ramp-disk contact affects the head stack assembly bending mode and slider dynamics. The effect of irregular gaps between the disks and adjacent ramp on the slider dynamics is analyzed with the ramp-disk contact force. The simulation shows that the gap irregularity between the ramp and each disk should be as small as possible to improve the stability of the slider dynamics.</abstract><pub>IEEE</pub><doi>10.1109/TMAG.2016.2622739</doi><tpages>4</tpages></addata></record> |
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subjects | Analytical models Dynamics Electric shock Force Frequency-domain analysis Gap difference head stack assembly (HSA) bending mode Numerical models ramp–disk contact slider dynamics Springs |
title | Operational Shock Analysis for 2.5-in Multi-Disk HDD Considering Ramp-Disk Gap Irregularity |
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