谱分析时中地震反应谱是如何求解的！？？ 在模态分析得到频率以后， 在谱分析时所要输入的sv值是怎样求解出来的！！？？ 请大侠指导！谢谢！ 例： /solu antype,spectr spopt,sprs,2,yes sed,1

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谱分析时中地震反应谱是如何求解的！？？

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谱分析时中地震反应谱是如何求解的！？？
在模态分析得到频率以后，
在谱分析时所要输入的sv值是怎样求解出来的！！？？
请大侠指导！谢谢！
例：
/solu
antype,spectr
spopt,sprs,2,yes
sed,1
svtype,2
freq,0.8,2.5,2.7911,3.3333,4,6.4173,10,10000
sv,,0.55,1.027,1.135,1.331,1.568,1.568,1.568,0.7056
solve
finish