An improved model for time-varying mesh stiffness of straight bevel gears with a real cross-section using the potential energy method. - Jintao Li; Zhaobo Chen; Hancheng Mao; Liang Ye; Chizhik Sergei; Wenrui Jiang; Guangbin Yu (Commun. Nonlinear Sci. Numer. Simul., 2025)