Abstract:

In order to improve the straightness of domestic carding machine work roll subjected to the card clothing weight and with self-weight, the structure analysis and study were carried out for a certain type domestic work roll with ANSYS. On the basis of the analysis and study, the optimum design of carding machine work roll was carried out. Firstly, the mathematical model of topological optimization and size optimization was established, and the sensitivity of the objective function to design variables was deduced in the topology optimization mathematical model. Then, the two-step optimization scheme was proposed based on analysis and study of the work roll, and the structure of work roll was optimized by topology optimization and size optimization successively based on ANSYS APDL and the own optimizer. The results show that the materials are distributed to it's right place, and the maximum of deflection reduce from 0.33 mm to 0.11 mm with the constrained stress, the maximum of deflection obtained by optimization reduces by 67% compared with the non-optimized one, the straightness of the work roll is improved, and the performance of the work roll is also improved.

Key words: work roll of carding machine, topology optimization, size optimization, deflection