Reduction of the residual stresses in cold expanded thick-walled cylinders by plastic compression; Defence Technology; Vol. 12, iss. 6
| Parent link: | Defence Technology: Scientific Journal Vol. 12, iss. 6.— 2016.— [P. 473-479] |
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| Institutionell upphovsman: | |
| Övriga upphovsmän: | , , , , |
| Sammanfattning: | Title screen We suppose that in order to maintain high accuracy of holes and to lower residual stresses after cold expansion of thick-walled cylinders, which undergo cross-section plastic deformation, it is necessary to perform axial plastic compression and subsequent cold expansion with small interferences. To test this hypothesis, we studied hoop, radial and axial residual stresses in cylinders made of carbon steel AISI 1050 with hole diameter of 5 mm, outer diameter of 15 mm and length of 30 mm by Sachs method as well as accuracy of expanded holes. It is found that double cold expansion with total interference equal to 5.1% generates hoop residual stresses with largest absolute value equal to 284 MPa and ensures high holes accuracy (IT7). After plastic compression with strain equal to 0.5 and 1% the mentioned stresses reduced to 120 and 75 MPa respectively, and accuracy of the holes reduced as well. Subsequent cold expansion with small interference equal to 0.9% helps to restore holes accuracy (IT7) gained by double cold expansion and ensure that absolute value of hoop residual stresses (177 MPa) is lower compared to double cold expansion. Режим доступа: по договору с организацией-держателем ресурса |
| Språk: | engelska |
| Publicerad: |
2016
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| Ämnen: | |
| Länkar: | https://doi.org/10.1016/j.dt.2016.08.002 |
| Materialtyp: | Elektronisk Bokavsnitt |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667263 |
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| 200 | 1 | |a Reduction of the residual stresses in cold expanded thick-walled cylinders by plastic compression |f V. F. Skvortsov, A. O. Boznak, A. B. Kim [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 20 tit.] | ||
| 330 | |a We suppose that in order to maintain high accuracy of holes and to lower residual stresses after cold expansion of thick-walled cylinders, which undergo cross-section plastic deformation, it is necessary to perform axial plastic compression and subsequent cold expansion with small interferences. To test this hypothesis, we studied hoop, radial and axial residual stresses in cylinders made of carbon steel AISI 1050 with hole diameter of 5 mm, outer diameter of 15 mm and length of 30 mm by Sachs method as well as accuracy of expanded holes. It is found that double cold expansion with total interference equal to 5.1% generates hoop residual stresses with largest absolute value equal to 284 MPa and ensures high holes accuracy (IT7). After plastic compression with strain equal to 0.5 and 1% the mentioned stresses reduced to 120 and 75 MPa respectively, and accuracy of the holes reduced as well. Subsequent cold expansion with small interference equal to 0.9% helps to restore holes accuracy (IT7) gained by double cold expansion and ensure that absolute value of hoop residual stresses (177 MPa) is lower compared to double cold expansion. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Defence Technology |o Scientific Journal | ||
| 463 | |t Vol. 12, iss. 6 |v [P. 473-479] |d 2016 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a thick-walled cylinders | |
| 610 | 1 | |a cold expansion | |
| 610 | 1 | |a plastic compression | |
| 610 | 1 | |a residual stresses | |
| 701 | 1 | |a Skvortsov |b V. F. |c specialist in the field of mechanical engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1947- |g Vladimir Fedorovich |3 (RuTPU)RU\TPU\pers\31546 | |
| 701 | 1 | |a Boznak |b A. O. |c specialist in mechanical engineering |c assistant of Tomsk Polytechnic University |f 1990- |g Aleksey Olegovich |3 (RuTPU)RU\TPU\pers\35613 | |
| 701 | 1 | |a Kim |b A. B. |c specialist in the field of mechanical engineering |c Senior lecturer of Tomsk Polytechnic University |f 1980- |g Aleksey Bogovich |3 (RuTPU)RU\TPU\pers\31549 | |
| 701 | 1 | |a Arlyapov |b A. Yu. |c specialist in the field of mechanical engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1974- |g Aleksey Yurievich |3 (RuTPU)RU\TPU\pers\31547 | |
| 701 | 1 | |a Dmitriev |b A. I. |c physicist |c engineer of Tomsk Polytechnic University, doctor of physical and mathematical sciences |f 1972- |g Andrey Ivanovich |3 (RuTPU)RU\TPU\pers\35822 | |
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