Hello,<\/p>\n
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I am trying to use the dampening parameter beta in a simulation I have built. The simulation runs just fine when there is no damping parameter beta in the material properties, but as soon as I add beta to get rid of some oscillations I am seeing, the force stops converging. My material is hyperelastic and nearly incompressible. I put this command under Solid_Body in the Geometry:<\/p>\n
ET, matid, 226<\/strong> <\/p>\n Because the documentation says, “The current-technology elements with mixed u-P formulation and SOLID285<\/span> are available for nearly incompressible hyperelastic materials.” I find 226 is a current technology element and without the keyopt it will not converge any better than the solid186 element I tried before. So I wanted to try the mixed u_P formulation as the documentation says. However, I get this error:<\/p>\n *** ERROR *** CP = 2.625 TIME= 16:56:53<\/strong> <\/p>\n <\/p>\n <\/p>\n Why does the documentation say I can use keyopt 11 under solid226 and yet transient structural says it is invalid? Is there anything else I can do to help “force convergence” when I add dampening to the material property? I have tried a finer mesh, smaller time steps and so I am at a loss. I have tried dampening parameter values of 0.1, 0.01 and they both fail to converge. <\/p>\n <\/p>\n <\/p>\n Thanks<\/p>\n","protected":false},"template":"","class_list":["post-35644","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t
keyopt, matid, 11, 1<\/strong><\/p>\n
For element type = 1 (SOLID226), KEYOPT(11) = 1 is invalid.<\/strong><\/p>\n
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