Impact-induced acceleration by obstacles
We explore a surprising phenomenon in which an obstruction accelerates, rather than decelerates, a moving flexible object. It has been claimed that the right kind of discrete chain falling onto a table falls faster than a free-falling body. We confirm and quantify this effect, reveal its complicated...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aac151 |
| _version_ | 1797353330822873088 |
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| author | N A Corbin J A Hanna W R Royston H Singh R B Warner |
| author_facet | N A Corbin J A Hanna W R Royston H Singh R B Warner |
| author_sort | N A Corbin |
| collection | DOAJ |
| description | We explore a surprising phenomenon in which an obstruction accelerates, rather than decelerates, a moving flexible object. It has been claimed that the right kind of discrete chain falling onto a table falls faster than a free-falling body. We confirm and quantify this effect, reveal its complicated dependence on angle of incidence, and identify multiple operative mechanisms. Prior theories for direct impact onto flat surfaces, which involve a single constitutive parameter, match our data well if we account for a characteristic delay length that must impinge before the onset of excess acceleration. Our measurements provide a robust determination of this parameter. This supports the possibility of modeling such discrete structures as continuous bodies with a complicated constitutive law of impact that includes angle of incidence as an input. |
| first_indexed | 2024-03-08T13:29:35Z |
| format | Article |
| id | doaj.art-9638328c49ce48198341e366f135d6b2 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-08T13:29:35Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-9638328c49ce48198341e366f135d6b22024-01-17T10:41:36ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120505303110.1088/1367-2630/aac151Impact-induced acceleration by obstaclesN A Corbin0J A Hanna1W R Royston2H Singh3https://orcid.org/0000-0002-1096-6381R B Warner4Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of AmericaDepartment of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of America; Department of Physics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of America; Center for Soft Matter and Biological Physics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of AmericaDepartment of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of AmericaDepartment of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of AmericaDepartment of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University , Blacksburg, VA 24061, United States of AmericaWe explore a surprising phenomenon in which an obstruction accelerates, rather than decelerates, a moving flexible object. It has been claimed that the right kind of discrete chain falling onto a table falls faster than a free-falling body. We confirm and quantify this effect, reveal its complicated dependence on angle of incidence, and identify multiple operative mechanisms. Prior theories for direct impact onto flat surfaces, which involve a single constitutive parameter, match our data well if we account for a characteristic delay length that must impinge before the onset of excess acceleration. Our measurements provide a robust determination of this parameter. This supports the possibility of modeling such discrete structures as continuous bodies with a complicated constitutive law of impact that includes angle of incidence as an input.https://doi.org/10.1088/1367-2630/aac151chainsimpactcoiling |
| spellingShingle | N A Corbin J A Hanna W R Royston H Singh R B Warner Impact-induced acceleration by obstacles New Journal of Physics chains impact coiling |
| title | Impact-induced acceleration by obstacles |
| title_full | Impact-induced acceleration by obstacles |
| title_fullStr | Impact-induced acceleration by obstacles |
| title_full_unstemmed | Impact-induced acceleration by obstacles |
| title_short | Impact-induced acceleration by obstacles |
| title_sort | impact induced acceleration by obstacles |
| topic | chains impact coiling |
| url | https://doi.org/10.1088/1367-2630/aac151 |
| work_keys_str_mv | AT nacorbin impactinducedaccelerationbyobstacles AT jahanna impactinducedaccelerationbyobstacles AT wrroyston impactinducedaccelerationbyobstacles AT hsingh impactinducedaccelerationbyobstacles AT rbwarner impactinducedaccelerationbyobstacles |