abaqus拓扑优化中出现问题

Wyynancy

我在面载荷耦合点处施加集中力，但拓扑优化时显示in keyword *NSET, file "Opt-Process-1-Job.inp", line 307698: The following sets specified do not exist: "LOAD POINT2"
不知道为什么此点不存在，因为前面明明已完成了分析。

Wyynancy

其实没什么问题，换个14版就行了。

sharon11799

请问楼主做例题的时候出现过这个错误提示吗？
The constraint definition of the constraint OPT-CONSTRAINT-1

is not correct.

The constraint value (mapped on the design elements)

  is less than zero which means that the amount of (auto) frozen elements

(or non-design elements) is higher than the possible amount of

remaining elements.

  The constraint volume given from the user (CONSTRAINT_VOLUME_GIVEN_FROM_USER) i

  s:

    VOLUME_OF_GROUP * CONSTRAINT_VALUE =    552994.7   

CONSTRAINT_VOLUME_for_design_elements =

    CONSTRAINT_VOLUME_GIVEN_FROM_USER

  - VOLUME_OF_FROZEN_ELEMENTS_IN_DESIGN_AREA

  - VOLUME_OF_FROZEN_ELEMENTS_OUTSINDE_DESIGN_AREA

                             constr_vol_design (abs):   -22010.44   

                             Constraint volume (abs):     552994.7   

      Volume of frozen elements in design area (abs):     26496.95   

            Volume of non design area elements (abs):     548508.2   

Volume of frozen elements outside design area (abs):   0.0000000E+00

-> Please check the constraint definition.

It was not possible to finish the

determination of the parameters for

TOPOLOGY OPTIMIZATION because the transformation

of the volume constraints failed.

-> Please check the definition of the volume

    constraints and read the error messages above

-> The optimization loop will not start.

    Please check INPUT!

  ERROR in Abaqus / ATOM-module "Abaqus / ATOM.pre"  

  Abaqus / ATOM-preprocessor did not finish correctly.

  Module call: "D:\abaqus\6.11-1\External\ATOM/bin/atom_prep" --loglevel INFO < Opt-Process-1.par  

  Return code: 0

Logfile: Opt-Process-1\atom.out

Optimization process failed with an error.The co

Wyynancy

是不是可以把体积分数增大一些，它意思应该就是说满足你所设置的体积分数前提下，优化后剩下的体积小于冻结区体积，出现了矛盾。