{"id":165185,"date":"2023-03-17T08:59:37","date_gmt":"2023-03-17T08:59:37","guid":{"rendered":"\/knowledge\/forums\/topic\/with-regards-to-the-topology-optimizer-penalty-factor-what-is-the-implication-of-using-a-very-large-number-10-for-this-property\/"},"modified":"2023-07-31T12:30:45","modified_gmt":"2023-07-31T12:30:45","slug":"with-regards-to-the-topology-optimizer-penalty-factor-what-is-the-implication-of-using-a-very-large-number-10-for-this-property","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/with-regards-to-the-topology-optimizer-penalty-factor-what-is-the-implication-of-using-a-very-large-number-10-for-this-property\/","title":{"rendered":"With regards to the Topology Optimizer Penalty Factor, what is the implication of using a very large number (>>10) for this property?"},"content":{"rendered":"

Penalty factor is penalizing the stiffness matrix with this equation penalized stiffness = ( pseudo density)^penalty factor \u00c3\u2014 stiffness. The higher the penalty factor, the lower the grey region in the final design. The grey region is the region which contains the intermediate density in the design ( the pseudo density between 0.4 to 0.6). The less the grey region, the better is the design. So once users have selected a final design, they can deploy Penalty Factor to reduce the grey region. The implication of using too high a penalty factor is that it creates the potential for a huge gradient between different elements, making the solution unstable. The stiffness might not be too high because the pseudo density is always between 0 and 1. But it can create a huge gradient of how stiffness is varying in the design.<\/p>\n","protected":false},"template":"","class_list":["post-165185","topic","type-topic","status-publish","hentry","topic-tag-19-1","topic-tag-analysis-techniques","topic-tag-mechanical","topic-tag-optimization","topic-tag-structural-mechanics"],"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