Method of calculating load and torque in the rolling of lumber using the stress-strain curve obtained by uniaxial compression - studies on the rolling of wood II

摘要

A method of calculating load and torque in the rolling of lumber is presented and evaluated by comparison between experimental rolling data and calculated results. In this method, it is assumed that the stress-strain curve of lumber in the roll gap is coincident with that of uniaxial compression by fiat dies, the stroke of which exhibits the same motion as that of the roll gap. The results of the comparison between calculated and experimental data show that the calculated load is 5% smaller than the experimental value, and the calculated torque is 25% smaller. It is also verified by experiments that no friction hill was generated in the compression of lumber plates. In conclusion, this method is applicable for the estimation of load and torque in the rolling of lumber.