Two point exponential approximation method for structural optimization of problems with frequency constraints

Original publisher: Langley, VA : NASA Langley Research Center, [1991] OCLC Number: ocm27757779 Subject: Structural optimization. Excerpt: ... / POST1 set,, l * get, frel, freq set,, 2 * get, fre2, freq set,, 3 * get, fre3, freq FINISH / OPT FACT =. 99999 HI = H'FACT H2 = H / FACT BI = B * FACT B2 = B / FACT OPVAR, H, DV, H1, H2 OPVAR, B, DV, BI, B2 OPVAR, AREA, OBJ OPVAR, PAR1, SV,. I, H OPVAR, PAR3, SV,. 1, B OPVAR, FREI, SV,. I, 10 OPVAR, FRE2, SV,. I, 100. OPVAR, FRE2, SV,. I, 150. OPCOPY H = H * I. 001 RUN, 2 B = B * I. 001 H = H / I. 001 RUN, 3 T = T * I.O01 B = B / 1.001 RUN, 4 D = D * I. 001 T = T / I. 001 RUN, 5 OPLIST, ALL,, I FINISH / EOF