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Some problems pertaining to the mech...

Kadish, Jonathan Maxwell.

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Some problems pertaining to the mechanics of accreted planetary bodies.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Some problems pertaining to the mechanics of accreted planetary bodies./
Author:	Kadish, Jonathan Maxwell.
Description:	95 p.
Notes:	Advisers: James R. Barber; Peter D. Washabaugh.
Contained By:	Dissertation Abstracts International68-02B.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3253305

Some problems pertaining to the mechanics of accreted planetary bodies.
Kadish, Jonathan Maxwell.

Some problems pertaining to the mechanics of accreted planetary bodies. - 95 p.

Advisers: James R. Barber; Peter D. Washabaugh.

Thesis (Ph.D.)--University of Michigan, 2007.

This dissertation addresses problems pertaining to the mechanics of accreted planetary bodies. Roughly 4.6 billion years ago, all mass was in form of dust and gas that orbited the sun in a large cloud called the solar nebula. The growth of kilometer-sized objects from sub-micron sized dust grains occurred by the collisional and/or gravitational evolution of a swarm of particles. Growth in this manner, or growth by the continual deposition of material onto an object's surface, is known as a process of accretion.Subjects--Topical Terms:

783786
Engineering, Mechanical.

Some problems pertaining to the mechanics of accreted planetary bodies.
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005 20110928
008 110928s2007 eng d
035 $a (UMI)AAI3253305
035 $a AAI3253305
040 $a UMI $c UMI
100 1 $a Kadish, Jonathan Maxwell. $3 1296722
245 1 0 $a Some problems pertaining to the mechanics of accreted planetary bodies.
300 $a 95 p.
500 $a Advisers: James R. Barber; Peter D. Washabaugh.
500 $a Source: Dissertation Abstracts International, Volume: 68-02, Section: B, page: 1254.
502 $a Thesis (Ph.D.)--University of Michigan, 2007.
520 $a This dissertation addresses problems pertaining to the mechanics of accreted planetary bodies. Roughly 4.6 billion years ago, all mass was in form of dust and gas that orbited the sun in a large cloud called the solar nebula. The growth of kilometer-sized objects from sub-micron sized dust grains occurred by the collisional and/or gravitational evolution of a swarm of particles. Growth in this manner, or growth by the continual deposition of material onto an object's surface, is known as a process of accretion.
520 $a An explicit, closed form solution for the stress field of an accreted, triaxial ellipsoid is derived using the linear, small deformation theory of elasticity. It is found that that this stress field is qualitatively different from the typical elastic solution, which is equivalent to building the body to its final dimensions and then endowing it with mass and angular momentum. On a related topic, a discrete element method is used to simulate growth as the head-on collision between a particle and a pack of particles that are all spherical, smooth, and rigid. It is found that energy can be dissipated amongst these constitutively simple particles by a rise of the system's granular temperature, which allows growth to occur even when the accreting particle's velocity is larger than its escape velocity. This phenomena may have played an important role during growth in the early solar system.
590 $a School code: 0127.
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Physics, Astronomy and Astrophysics. $3 1019521
690 $a 0548
690 $a 0606
710 2 0 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 68-02B.
790 $a 0127
790 1 0 $a Barber, James R., $e advisor
790 1 0 $a Washabaugh, Peter D., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3253305