TY - JOUR TI - Circulatory integral and Routh's equations of Lagrange systems with Riemann-Liouville fractional derivatives AU - Fu Jing Li AU - Zhang Lijun AU - Khalique Chaudry Masood AU - Guo Ma Li JN - Thermal Science PY - 2021 VL - 25 IS - 2 SP - 1355 EP - 1363 PT - Article AB - In this paper, the circulatory integral and Routh’s equations of Lagrange systems are established with Riemann-Liouville fractional derivatives, and the circulatory integral of Lagrange systems is obtained by making use of the relationship between Riemann-Liouville fractional integrals and fractional derivatives. Thereafter, the Routh’s equations of Lagrange systems are given based on the fractional circulatory integral. Two examples are presented to illustrate the application of the results.