诸位见贴的专家老师好，在这里向您们请教一个问题，就是在定义素混凝土材料屈服阶段的破坏准则时，我的第一个点，是和弹性模量相等吗，我看到很多网上的数据第一个点都是“0.0002，fc*0.19”但是按照第一个点的斜率和弹性模量相等的说法，那么不应该是0.0002，fc*0.2吗？下面是我定义的材料的线弹性阶段和屈服破坏阶段的命令流，请帮我解答一下。

ET,1,SOLID65
MP,EX,1,3.0e10
MP,DENS,1,2500
MP,PRXY,1,0.2
fc=30e6
ft=1.5e6
tb,concr,1
tbdata,,0.5,0.95,ft,fc
tb,miso,1,,10
tbpt,,0.0002,fc*0.20
tbpt,,0.0004,fc*0.36
tbpt,,0.0006,fc*0.51
tbpt,,0.0008,fc*0.64
tbpt,,0.001,fc*0.75
tbpt,,0.0012,fc*0.84
tbpt,,0.0014,fc*0.91
tbpt,,0.0016,fc*0.96
tbpt,,0.0018,fc*0.99
tbpt,,0.002,fc