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Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Counter-roller spinning was a key technique for forming large high-strength metal thin-walled cylinders. The latest research progresses of counter-roller spinning technology for metal thin-walled cylinders were summarized from 4 aspects: plastic deformation mechanism, influence and control of forming accuracy, microstructure evolution and defects, and counter-roller spinning equipment. It is pointed out that the difficulty of plastic flow control caused by time-varying nonlinear characteristics is the bottleneck in engineering applications of counter-roller spinning technology. The technical difficulties of counter-roller spinning were analyzed, and the development trends were discussed. It is revealed that the multi-source hybrid active power flexible spinning process of counter-rollers is of a reference for solving the precision spinning forming of ultra-high strength and large size metal thin-walled cylinders. [ABSTRACT FROM AUTHOR]

Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This work analyses the structural integrality for a large aspect ratio dual thrust solid rocket motor (SRM) grain of one antiaircraft missile. Various loading conditions were analyzed during spinning launching process. Based on 3D viscoelastic FEM method, the stress-strain fields were simulated. Results show that the interior pressure loads, axial inertial loads and angular acceleration loads are the primary loading factors that influence its structural integrity. The rear face of grain boss is the dangerous place and the excessive stretch of the cantilever section would lead to gas channel's congestion, which might cause the interior pressure drastic-increasing even failure of shell. It is suggested that the following measures be effective to optimize the structure of solid rocket motor, such as improving the charging tooling to avoid micro-crack, setting the fixtures or supporting mechanism to cantilever section and optimizing the ratio of burning surface to port area ratio. [ABSTRACT FROM AUTHOR]