Transactions of Materials and Heat Treatment

Title：Theoretical analysis on structural mechanics for multi-roll straightener of plate

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ClassificationCode：TG305

year,vol(issue):pagenumber：2020,45(11):134-142

Abstract：

For the engineering problem of residual stress existing in the actual straightened plate, the work roll system of existing straightener was geometrically analyzed by world line method of spatial description method and modern geometry, and it was concluded that the work roll system of straightener formed a unique structural mechanical multi-arch structure. Then, according to the theory of structural mechanics that the odd-numbered arch is a geometrically invariant system and the even-numbered arch is a geometrically variable system in multi-arch structure with equal arch height. The results show that the overall arrangement of work roll system should conform to the geometric invariant system of odd-numbered rolls, and the geometric invariant system of even-numbered rolls can be realized by the pre-stressed method. Furthermore, the straightening metal plate was analyzed by structural mechanics, and it is concluded that the roll system of inlet side mainly provides the straightening pressure, and the roll system of outlet side mainly provides the horizontal thrust of metal plate. According to the actual test results, the theoretical basis for the peak force of straightening roll system on the outlet side of straightener was supplemented and perfected.

Funds：

山西省重点研发项目（201803D121123）；重型机械装备省部共建协同创新中心专项资助（2020-3-11-17）

李昕涛（1973-），男，硕士，副教授 E-mail：15003519081@163.com

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