List of Articles Natural Frequency Open Access Article Abstract Page Full-Text 1 - Mass and Stiffness Matrices and Frequencies of Simple Beam Elements Based on Real Shape Functions Pedram Abouzari Karen Khanlari Reza Esmaeilabadi 10.30486/admt.2022.1949656.1336 Open Access Article Abstract Page Full-Text 2 - Investigation of Pressure Distribution on Slippers of a Monorail Sled with Vibration Damper Mohammad Reza Najafi Saied Mahjoub Moghadas 10.30495/admt.2022.1949929.1334 Open Access Article Abstract Page Full-Text 3 - Numerical and Experimental Investigation of Natural Frequency and Damping Coefficient of Flexible Cellular Lattice Structures Amir Hosein Samimi M. R. Karamooz-Ravari Reza Dehghani 10.30486/ADMT.1403.873757