فهرس المقالات Harmonic excitation حرية الوصول المقاله صفحة الملخص نص كامل 1 - Dynamic Stability Analysis of Bi-Directional Functionally Graded Beam with Various Shear Deformation Theories Under Harmonic Excitation and Thermal Environment A Ghorbanpour Arani Sh Niknejad A Mihankhah I Safari 10.22034/jsm.2019.583270.1375