{"id":365642,"date":"2024-05-06T11:14:28","date_gmt":"2024-05-06T11:14:28","guid":{"rendered":"\/forum\/forums\/reply\/365642\/"},"modified":"2024-05-06T11:15:15","modified_gmt":"2024-05-06T11:15:15","slug":"365642","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/365642\/","title":{"rendered":"Reply To: Hashin Failure DMGI"},"content":{"rendered":"

<p> <\/p><p><span style=”font-size: 12pt;”>Hi Ken Ng,<\/span><\/p><p><span style=”font-size: 12pt;”>Implementing the Hashin failure criteria in ANSYS APDL requires understanding various inputs, including the damage variable in the viscous damping coefficients. The damage variable, typically denoted by ‘PDMG’ when using the ‘PLNSOL’ command, represents the state of damage in the material. It ranges from 0 (no damage) to 1 (total failure), but due to numerical considerations, it may not reach an exact value of 1, instead, it may approach 0.99999 to prevent the material stiffness from becoming zero and the matrix from becoming unsolvable. Refer to: \/forum\/forums\/topic\/hashin-failure-results\/<\/a><\/span><\/p><p><span style=”font-size: 12pt;”>The viscous damping coefficients, are specified for the different damage modes and are part of the damage evolution law, which regularizes the damage evolution. The coefficients are used in the constitutive equations that define the behavior of the material post-damage. It’s important to also specify a compatible material damage initiation criterion (TB, DMGI) to ensure that the damage evolution law affects the material as intended. Refer to: https:\/\/ansyshelp.ansys.com\/Views\/Secured\/corp\/v232\/en\/ans_mat\/mat_damageall.html<\/a><\/span><\/p><p> <\/p><p><span style=”font-size: 10pt;”>Regards,<\/span><\/p><p><span style=”font-size: 10pt;”>Saumadeep Choudhury<\/span><\/p><p><span style=”font-size: 10pt;”><span lang=””en-IN””>How to access Ansys help links<\/span><\/a><\/span><\/p><p><span style=”font-size: 10pt;”><span lang=””en-IN””>Guidelines for Posting on Ansys Learning Forum<\/span><\/a><\/span><\/p><p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-365642","reply","type-reply","status-publish","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