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dc.contributor.advisorSmith, R.J.
dc.contributor.authorCarlmark, Jon William
dc.dateDecember 1971
dc.date.accessioned2012-11-13T23:25:01Z
dc.date.available2012-11-13T23:25:01Z
dc.date.issued1971-12
dc.identifier.urihttp://hdl.handle.net/10945/15850
dc.description.abstractA rational method is presented to predict the penetration of free-falling objects into deep-sea sediments by combining proven empirical theories from the field of soil mechanics with known hydrodynamic phenomena. The impact velocity of the object and the shear strength profile and density of the sediment are assumed to be known. The penetration problem was solved through the use of a computer by equating the work done during penetration to the energy of the object falling through air and impacting onto a modeled deep-sea sediment. The objects were simple geometric shapes ranging in weight from 500 to more than 1,000 pounds. The impact velocities ranged from zero to twenty feet-per-second. The results are compared with full scale tests and recommendations are made to extend the method to a water-sediment interface. The method successfully predicts the penetration of objects into weak, saturated, sediments within the accuracy of the stateof- the-art techniques for measuring the sediment mechanical properties. The impact duration time was observed to be relatively constant and independent of object velocity, shape, and weight implying that it may be a unique property of the dynamic behavior of a sediment typeen_US
dc.description.urihttp://archive.org/details/penetrationoffre1094515850
dc.format.extent267 p.en_US
dc.language.isoen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshOceanographyen_US
dc.titlePenetration of free-falling objects into deep-sea sedimentsen_US
dc.typeThesisen_US
dc.contributor.secondreaderNunn, Robert
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentOceanography
dc.subject.authorPenetrationen_US
dc.subject.authorSedimentsen_US
dc.subject.authorDeep-seaen_US
dc.subject.authorShear-strengthen_US
dc.subject.authorFree-fallen_US
dc.subject.authorDynamic testsen_US
dc.subject.authorSoil mechanicsen_US
dc.description.serviceLieutenant Commander, United States Navyen_US
etd.thesisdegree.nameM.S. in Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineOceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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