微氣囊抗震移動硬盤性能的研究及應用.pdf

1、北京工業(yè)大學碩士學位論文微氣囊抗震移動硬盤性能的研究及應用姓名：徐宇哲申請學位級別：碩士專業(yè)：機械設計及理論指導教師：張建輝20080401AbstractAbstractTherearetwokindsofmethodsonanti。shockformobileharddiskwhichareactiveantishockandpassiveanti—shockActiveanti—shocktechnologyisusedinlow

2、frequencyanti—shockandhighaccelerationfield，butitisverycomplexandexpensive，becauseitneedsaccelerationsensorandcontrolcircuit，itisonlyusedonmilitarysecurityaspectComparingwithitpassiveantishocktechnologyhasgoodanti—shockp

3、erformance，simplestructureandcheaperSOitissuittobeappliedtonormalUSerSInthispaperanewantishockmobileharddiskbasedonsubminiatureairchambertechnologyispresented，theoreticalandexperimentalresearchisappliedonitAnewantishockm

4、obileharddiskisdeveloped，andaharddiskbodyishangedinsideitwhichke印ssomedistancefromthecrustEachsurfaceoftheharddiskbodyisconnected、析mcrustbybracketSOwhenthemobileharddiskfallsonthefloorinanysituationitCanbeprotectedperfec

5、tlyAccordingtotheconservationofenergydeformationenergyoftheharddiskbodyisanalyzedduringthefallingprocess，twoformulasfordeformationenergyofharddiskbodyareestablished，oneisbeforethecollisiontheotherisaR％thencomparethetwofo

6、rmulasandanalyzethemBasedonrelationshipofstressandstrain011elastictheoryformulasforcountingdeformationenergyofharddiskbodyareestablishedwhentheshakeisoccurredAccordingtotheneedsofexperimentandresearchasimpledeformationen

7、ergyformulaisdevelopedA25inchaluminousnotebookharddiskbodymodelismanufacturedwiththesameshapeandsizeoftherealone。Experimentsareappliedonthenormalmobilediskandtheanti—shockmobilediskusinganewexperimentalequipmentwhichcall

8、measuretheportraitstrainvaluerespectivelyrelationshipbetweenstrainvalueand鉚lheightisobtainedAfterthat，strainvalueisputintotheforegoingsimpledeformationenergyformulatheresultprovesthattheantishockperformanceoftheantishock