Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter
Clattering motion that occurs when flat objects strike the ground at an oblique angle is studied through a simple, tractable, model of a rigid bar with arbitrary, but symmetric, mass distribution and coefficient of restitution. The maximum velocity changes, or velocity shocks, that occur at various...
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| Format: | Article |
| Language: | English |
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Wiley
2002-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2002/862484 |
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| _version_ | 1832563750009307136 |
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| author | Suresh Goyal James M. Papadopoulos |
| author_facet | Suresh Goyal James M. Papadopoulos |
| author_sort | Suresh Goyal |
| collection | DOAJ |
| description | Clattering motion that occurs when flat objects strike the ground at an oblique angle is studied through a simple, tractable, model of a rigid bar with arbitrary, but symmetric, mass distribution and coefficient of restitution. The maximum velocity changes, or velocity shocks, that occur at various locations of the bar as it clatters to rest, are presented. It is shown that different parts of the bar can be subjected to sequences of velocity changes that are both higher, and lower, than those encountered in a single clatter-free impact. The implication that the drop-tolerance of an electronic product can be increased by configuring it to have ‘safe zones’ – where the velocity shocks are lower – for the placement of fragile components, is analysed. It is shown, through example, that a significant safe zone can be created in the center of the product by configuring it to have a low moment of inertia and by minimizing coefficient of restitution. |
| format | Article |
| id | doaj-art-09b67d1b0c8d487e8177f0fe8f4778f2 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2002-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-09b67d1b0c8d487e8177f0fe8f4778f22025-02-03T01:12:33ZengWileyShock and Vibration1070-96221875-92032002-01-019626527610.1155/2002/862484Safe Zones for Shock-Protection of Fragile Components during Impact-Induced ClatterSuresh Goyal0James M. Papadopoulos1Network Hardware Integration Research, Lucent Technologies, Bell Laboratories, 600 Mountain Avenue, Rm. 1B-212, Murray Hill, NJ 07974, USAPaper Converting Machine Company, 2300 South Ashland Avenue, Green Bay, WI 54307, USAClattering motion that occurs when flat objects strike the ground at an oblique angle is studied through a simple, tractable, model of a rigid bar with arbitrary, but symmetric, mass distribution and coefficient of restitution. The maximum velocity changes, or velocity shocks, that occur at various locations of the bar as it clatters to rest, are presented. It is shown that different parts of the bar can be subjected to sequences of velocity changes that are both higher, and lower, than those encountered in a single clatter-free impact. The implication that the drop-tolerance of an electronic product can be increased by configuring it to have ‘safe zones’ – where the velocity shocks are lower – for the placement of fragile components, is analysed. It is shown, through example, that a significant safe zone can be created in the center of the product by configuring it to have a low moment of inertia and by minimizing coefficient of restitution.http://dx.doi.org/10.1155/2002/862484 |
| spellingShingle | Suresh Goyal James M. Papadopoulos Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter Shock and Vibration |
| title | Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter |
| title_full | Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter |
| title_fullStr | Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter |
| title_full_unstemmed | Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter |
| title_short | Safe Zones for Shock-Protection of Fragile Components during Impact-Induced Clatter |
| title_sort | safe zones for shock protection of fragile components during impact induced clatter |
| url | http://dx.doi.org/10.1155/2002/862484 |
| work_keys_str_mv | AT sureshgoyal safezonesforshockprotectionoffragilecomponentsduringimpactinducedclatter AT jamesmpapadopoulos safezonesforshockprotectionoffragilecomponentsduringimpactinducedclatter |