运行分析时出错
我在建一个悬索桥模型，运行分析中断，运行日志如下，附有这个模型，哪位高手帮忙解决下问题，谢谢。MULTI-FRONTAL SOLVER
AVAILABLE MEMORY = 1400.0 MBYTES
ENTRY PHASE FOR RENUMBERING
ENTRY NUMBERING_EQN
ENTRY FORM_STIFF_MASS_LOAD
THE INDIVIDUAL ELEMENT STIFFNESS AND LOAD MATRICES WILL NOW BE FORMED.
ELEMENT NO. : 502OF 502
ENTRY SOLUTION PHASE
WARNING : NODE NO. 497DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2245
WARNING : NODE NO. 497DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2246
WARNING : NODE NO. 497DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2247
WARNING : NODE NO. 33DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 165
WARNING : NODE NO. 33DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 164
WARNING : NODE NO. 33DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 163
WARNING : NODE NO. 497RXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2248
WARNING : NODE NO. 497RYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2249
WARNING : NODE NO. 123DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 568
WARNING : NODE NO. 123DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 567
WARNING : NODE NO. 541DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2509
WARNING : NODE NO. 541DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2510
WARNING : NODE NO. 541DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2511
WARNING : NODE NO. 541RXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2512
WARNING : NODE NO. 541RYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2513
WARNING : NODE NO. 541RZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2514
WARNING : NODE NO. 77DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 363
WARNING : NODE NO. 241DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 1128
WARNING : NODE NO. 241DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 1129
WARNING : NODE NO. 241DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 1130
WARNING : NODE NO. 519RZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2382
WARNING : NODE NO. 519RYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2381
WARNING : NODE NO. 519RXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2380
WARNING : NODE NO. 519DZDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2379
WARNING : NODE NO. 519DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2378
WARNING : NODE NO. 519DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 2377
WARNING : NODE NO. 77DXDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 361
WARNING : NODE NO. 77DYDOF MAY BE SINGULAR.
WARNING : EQUATION NO. 362
NONLINEAR STATIC LOADCASE : 1
INCREMENT NO. : 1ITERATION NO. : 1 DISPL. NORM : 0.100E+01
CABLE ELEMENT CONVERGENCE FAILURE 32 CHANGE ELEMENT TYPE CABLE -> TRUSS
-------------------------------------------------------------
ERRORS ENCOUNTERED.MIDAS JOB TERMINATED. REFER TO .OUT FILE
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检查约束
一般约束和刚性连接等。
如果有施工阶段的话，看看每个阶段上的约束是否都加上了？
或者，节点分离了，固结的地方，节点坐标不一致。这个可能性不大。 运行日志上面的意思似乎是某些节点有异常，我把那些节点删掉重新建立再运行的时候，原先有问题的节点没有异常了，但是又有其他的节点出现异常。 回复 changzan2000 的帖子
那很可能是节点坐标的问题了
必须保证，固结的地方要么共节点（节点坐标完全一致），要么刚性连接，而且必须保证每个阶段模型都按你的要求加上了这些连接；相信一般的支撑约束，你不会加错。
按照这个原则，好好检查下模型，这类问题都是这么回事。
个人碰到过类似情况 这种情况一般是节点约束的问题 约束出了问题，或者在定义施工阶段的时候没有将相应的支座节点定义为该施工阶段的结构组。
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