WS4 -1 NAS105, Workshop 4, May 2005 WORKSHOP 4 MODEL WITH PLATES AND BEAMS

WS4 -2 NAS105, Workshop 4, May 2005

WS4 -3 NAS105, Workshop 4, May 2005 Tasks n Run the given nastran input file (workshop4.dat) n Study the.f06 file n Try and Debug the model by: u a. By setting K6ROT= 0, and AUTSPC = NO u b. By setting K6ROT= 0, and AUTSPC = YES u c. By setting K6ROT= 0, and AUTSPC = YES, and fixing (SPC) DOFs 456 at GRIDs 11, 12, 13, and 14 u d. By setting K6ROT= 0, and AUTSPC = NO, and adding MPC connecting Rotations with Translations

WS4 -4 NAS105, Workshop 4, May 2005 Problem Files n Required File(s): workshop4. dat n Proposed Solution File(s): ws4s_a.bdf - K6ROT= 0, and AUTSPC = NO This is singular. Why? ws4s_b.bdf - K6ROT= 0, and AUTSPC = YES This is still singular. Why? ws4s_c.bdf – K6ROT= 0, and AUTSPC = YES, and SPC DOFs 456 at GRIDs 11, 12, 13, and 14 This is still singular. Why? ws4s_d.bdf – K6ROT= 0, and AUTSPC = YES, and MPC connecting Rotations with Translations