Abstract The paper analyses the tooth bending of GB12759-91 double circular-arc gear by three-dimension boundary element．On the basis，some results，such as the relation between the stress in tooth root and load．the relation between the stress in tooth middle and load，the relation between the stress in tooth root and equivalent flections radius，and the relation between the stress in tooth middle and equivalent flections radius，are obtained．The study shows that the stress in tooth middle is larger than that in tooth root with big spiral angle and light load．Tooth middle is a key point of double circular-arc gear and more attention should be paid．
ZHANG Xiu-Qin, LI Rui-Bin, ZHANG Ying-Shun. Research on bending stress in tooth of double circular-arc gear. Chinese Journal of Engineering Design, 2003, 10(3): 158-161.
