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My model is as follow. I want apply acceleration to node 5 .But i don't kown my way is right or wrong. wipe model BasicBuilder -ndm 2 -ndf 3 set PI [expr 2.0*asin(1.0)] #设置单位 set N 1.0 set m 1.0 set kg 1.0 set sec 1.0 set mm [expr $m*0.001] set cm [expr $m*0.01] set kN [expr $N*1000] set Pa [expr $N...

My model can only be loaded with a displacement of 3mm under the required direction load, otherwise it will not converge. Can you help me find the reason? This is a simple reinforced concrete column model with 3 nodes and 2 elements wipe model BasicBuilder -ndm 3 -ndf 6 set PI [expr 2.0*asin(1.0)] #...