用等效力系变换矩阵求解静不定桁架极限载荷
吴晓，刘奇元
Calculating Ultimate Load of Statically Indeterminate Truss by the Equivalent Force System Transformation Matrix
WU Xiao, LIU Qiyuan
力学季刊 . 2018, (1): 201 -208 .  DOI: 10.15959/j.cnki.0254-0053.2018.01.020