各位版友大家好:近日在做结构优化时遇见一问题,与大家共同讨论:
我自定义了一函数作为目标函数:
f(x1,x2)=rss{0.5*(x1-493)/877,0.5*(781-x2)/119}
其中x1取为compliance,x2取为frequence,在进行运算时出现一下错误:
*** ERROR # 1690 ***
While evaluating DEQATN # 1
This equation could not be parsed, possibly due to a missing operand.
Please see the DEQATN entry in the OptiStruct manual.
The error happened when the following sub-string was reached:
{0.5*[(x1-
我对编程不甚了解,希望有经验的前辈给以指点。
不甚感激!