9 制动工况 10 11 1电 2 阻 1制 3 动 14 运动工况 1 2 栏 数 项目 ?h b?1000?h?h 0.1353 0.1337 0.1332 0.1330 0.1318 0.1308 49.24 48.68 48.48 48.40 47.98 47.61 c??0?0.5b 26.01 25.85 25.80 25.79 25.75 25.79 Bd 410.4 482.7 457.8 444.5 374.7 321.8 0.9?Bd?103 bd?(P?G)?gc??0?0.9bd 8.07 9.49 9.00 8.74 7.37 6.33 1.39 10.05 1.56 1.59 8.39 7.68 速度 73.2 80 90 100 F(KN) 307.8 242.5 187.5 161.3 Fy=0.9F 277.02 218.25 168.75 145.17 5.36 1.94 5.82 2.1 6.55 2.36 7.35 2.65 ‘2牵 3 ? 0?2.25?0.0019??0.00032?’引 4 ?‘??0.000125?2 0?0.92?0.0048工 况 '''(P??0?G??0)?g?10?3 104.83 113.51 127.81 143.25 5 W0?6 7 惰行工况 8 C?F?W0 172.19 104.74 40.94 1.92 C?103 c?(P?G)?g3.39 2.06 0.81 0.04 W0?103?0? (P?G)?g2.06 2.23 2.51 2.82
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9 制动工况 10 11 1电 2 阻 1制 3 动 14 ?h b?1000?h?h 0.1305 0.1300 0.1294 0.1290 47.51 47.33 47.12 46.95 c??0?0.5b 25.82 25.90 26.07 26.29 Bd 307.1 280.7 250.2 226.5 0.9?Bd?103 bd?(P?G)?gc??0?0.9bd 6.04 5.52 4.92 4.45 7.50 7.20 6.94 6.83 3.2绘制合力曲线。
按一定比例将合力表中的机车不同工况下各速度的单位合力值,在直角坐标系中分别标出,连成圆滑的线即可。
3.2.1列出各工况的列车单位合力计算式:
C?103牵引工况时c?=
(P?G)?g{0.9F?[P?(2.25?0.0019??0.00032?2)?G?(0.92?0.0048??0.000125?2)]?g?10?3}?103(P?G)g
91.74F?184?(2.25?0.0019??0.00032?2)?5000?(0.92?0.0048??0.000125?2)=
5184W0?103惰性工况时?0?=
(P?G)?g[184?(2.25?0.0019??0.00032?2)?5000?(0.92?0.0048??0.000125?2)]?103
5184制动工况时c??0?0.5b=
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184?(2.25?0.0019??0.00032?2)?5000?(0.92?0.0048??0.000125?2)+157?h
5184电阻制动工况时 c??0?0.9bd
184?(2.25?0.0019??0.00032?2)?5000?(0.92?0.0048??0.000125?2)]=?0.9bd
51843.2.2利用matlab编制程序并运行绘出列车的单位合力曲线 牵引工况时编制程序如下: clc
v=0:10:100
f=[554 554 517 497 484.8 476.5 372.7 320.1 242.5 187.5 161.3]
c=(91.74*f-184*(2.25+0.019*v+0.000320*v.^2)-5000*(0.92+0.0048*v+0.000125*v.^2))/5184 plot(v,c,’r-’) 画出的图形为:
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惰性工况时编制程序如下: clc v=0:10:120
c=-(184*(2.25+0.0019*v+0.00032*v.^2)+5000*(0.92+0.0048*v+0.000125*v.^2))/5184 plot(v,c,’r-’) 画出图形为:
制动工况时编制程序如下: clc v=0:10:100
q=[0.3912 0.1627 0.1451 0.1386 0.1353 0.1332 0.1318 0.1308 0.1300 0.1294 0.1290]
c=-((138*(1.67+0.0014*v+0.000279*v.^2)+5000*(0.92+0.0048*v+0.000125*v.^2))/5138+157*q) plot(v,c,’r-’)
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画出图形为:
电阻制动工况时编制程序如下: clc v=0:10:100
b=[0 3.32 6.56 9.15 8.07 9.00 7.37 6.33 5.52 4.92 4.45]
c=-((184*(2.25+0.0019*v+0.00032*v.^2)+5000*(0.92+0.0048*v+0.000125*v.^2))/5184+0.9*b) plot(v,c,’r-’) 画出图形为:
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