@article{paperid:1068277, author = {Hozhabrossadati, Seyed Mojtaba and Aftabi Sani, Ahmad}, title = {Free Vibration of MDOF Systems with Nonperiodically Time-Varying Mass}, journal = {International Journal of Structural Stability and Dynamics}, year = {2018}, volume = {18}, number = {6}, month = {January}, issn = {0219-4554}, pages = {1850077---15}, numpages = {-1850092}, keywords = {Free vibration; MDOF systems; time-varying mass; differential transform method; system of coupled differential equation}, }