{"id":5466,"date":"2026-01-27T10:32:02","date_gmt":"2026-01-27T07:02:02","guid":{"rendered":"https:\/\/caeassistant.com\/?p=5466"},"modified":"2026-06-01T23:26:19","modified_gmt":"2026-06-01T19:56:19","slug":"%e5%90%af%e5%8a%a8-umat-abaqus","status":"publish","type":"post","link":"https:\/\/dev.caeassistant.com\/zh\/%e5%8d%9a%e5%ae%a2\/%e5%90%af%e5%8a%a8-umat-abaqus\/","title":{"rendered":"All About UMAT & VUMAT in Abaqus [Free PDF + Examples]"},"content":{"rendered":"

What Are UMAT and VUMAT in Abaqus? Abaqus UMAT<\/strong> (User Material) and Abaqus VUMAT<\/strong> are Fortran-based subroutines used to define custom constitutive material models in Abaqus\/Standard and Abaqus\/Explicit, respectively. They allow engineers and researchers to program advanced mechanical behaviors\u2014such as complex elasticity, plasticity, and composite damage\u2014when built-in Abaqus material libraries are insufficient. <\/span><\/p>\n

\u8fd9 CAE \u52a9\u624b<\/span><\/strong><\/a> guide provides a definitive roadmap for developing, implementing, and executing these subroutines. By exploring input\/output architectures, step-by-step coding for elastic and orthotropic models, and a direct UMAT vs. VUMAT comparison, readers will gain the practical expertise needed to write accurate custom algorithms. Access the provided free PDF guides and Fortran code templates to accelerate advanced material modeling projects.<\/span><\/p>\n

UMAT \/ VUMAT \u89c6\u9891\u6f14\u7ec3<\/p>\n

https:\/\/caeassistant.com\/wp-content\/uploads\/2026\/01\/Your_First_UMAT__VUMAT.mp4<\/a><\/video><\/div>\n

 <\/p>\n

UMAT \/ VUMAT \u97f3\u9891\u64ad\u5ba2<\/p>\nhttps:\/\/caeassistant.com\/wp-content\/uploads\/2026\/01\/Hijacking_Abaqus_with_UMAT_and_VUMAT.m4a<\/a><\/audio>\n\n\n\n\n\n\n
\u5b50\u7a0b\u5e8f\u7c7b\u578b<\/th>\n\u6c42\u89e3\u5668\u754c\u9762<\/th>\n\u4e3b\u8981\u4ea7\u51fa\u53d8\u91cf<\/th>\n\u5173\u952e\u8f93\u5165\u53d8\u91cf<\/th>\n\u96c5\u53ef\u6bd4\u77e9\u9635\u8981\u6c42<\/th>\n\u5e94\u7528\u7528\u4f8b<\/th>\n\u5411\u91cf\u5316\u652f\u6301<\/th>\n\u72b6\u6001\u53d8\u91cf\uff08SDV\uff09\u5bb9\u91cf<\/th>\n<\/tr>\n<\/thead>\n
UMAT<\/td>\nAbaqus\/Standard\uff08\u9690\u5f0f\uff09<\/td>\n\u538b\u529b\u3001DDSDDE\u3001STATEV\u3001SSE\u3001SPD\u3001SCD<\/td>\nSTRAN\u3001DSTRAN\u3001PROPS\u3001TIME\u3001DTIME\u3001TEMP\u3001DFGRD0\u3001DFGRD1<\/td>\n\u5fc5\u9700\uff08\u4e00\u81f4\u7684\u5207\u7ebf\u521a\u5ea6\uff09<\/td>\n\u9759\u6001\u3001\u5851\u6027\u3001\u8815\u53d8\u3001\u7c98\u5f39\u6027<\/td>\n\u672a\u5411\u91cf\u5316<\/td>\n*DEPVAR (NSTATV)<\/td>\n<\/tr>\n
VUMAT<\/td>\nAbaqus\/Explicit<\/td>\nSTRESSNEW\u3001STATENEW\u3001ENERINTERNNEW\u3001ENERINELASNEW<\/td>\n\u5e94\u53d8\u3001\u5c5e\u6027\u3001\u5bc6\u5ea6\u3001DEFGRADOLD\u3001\u5e94\u529bOLD<\/td>\n\u65e0\u9700<\/td>\n\u51b2\u51fb\u3001\u78b0\u649e\u3001\u5927\u53d8\u5f62<\/td>\nNBLOCK \u5411\u91cf\u5316<\/td>\n*DEPVAR\uff08NSTATEV\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

What Are UMAT and VUMAT in Abaqus?<\/span><\/h2>\n

Abaqus \u5185\u7f6e\u4e86\u8bb8\u591a\u6750\u6599\uff0c\u4f46\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u8fd9\u4e9b\u6750\u6599\u5f80\u5f80\u4e0d\u591f\u7528\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5de5\u7a0b\u5e08\u4eec\u4f1a\u4f7f\u7528\u5176\u4ed6\u8f6f\u4ef6\u3002 \u7528\u6237\u5b50\u7a0b\u5e8f<\/strong>. \u3002 \u548c Abaqus UMAT<\/strong> \u548c Abaqus VUMAT<\/strong>, \u60a8\u53ef\u4ee5\u4f7f\u7528 Fortran \u7f16\u5199\u81ea\u5df1\u7684\u6750\u6599\u6a21\u578b\uff0c\u5e76\u5c06\u5176\u76f4\u63a5\u94fe\u63a5\u5230\u6c42\u89e3\u5668\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u60a8\u5c31\u662f\u5728\u544a\u8bc9 Abaqus \u60a8\u7684\u6750\u6599\u5728\u53d8\u5f62\u65f6\u5982\u4f55\u54cd\u5e94\u3002.<\/span><\/p>\n

\u4f60\u53ef\u4ee5\u8fd9\u6837\u7406\u89e3\uff1aAbaqus \u6bcf\u6b21\u6267\u884c\u4e00\u6b65\u64cd\u4f5c\u65f6\uff0c\u90fd\u4f1a\u8c03\u7528\u4f60\u7684\u5b50\u7a0b\u5e8f\u5e76\u8be2\u95ee\uff1a, \u201c\u66f4\u65b0\u540e\u7684\u5e94\u529b\u662f\u591a\u5c11\uff1f\u6750\u6599\u5e94\u8be5\u5982\u4f55\u54cd\u5e94\uff1f\u201d<\/em> \u5728 UMAT<\/strong>, \u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\u5728\u9690\u5f0f\u6c42\u89e3\u5668\uff08Abaqus\/Standard\uff09\u5185\u90e8\u3002 VUMAT<\/strong>, \u5b83\u53d1\u751f\u5728\u663e\u5f0f\u6c42\u89e3\u5668\uff08Abaqus\/Explicit\uff09\u5185\u90e8\u3002.<\/span><\/p>\n

    \n
  • \n

    UMAT<\/strong>\uff1a\u53ef\u4e0e Abaqus\/Standard \u914d\u5408\u4f7f\u7528\uff0c\u6700\u9002\u5408\u9759\u6001\u6216\u6162\u901f\u52a0\u8f7d\u95ee\u9898\u3002\u5b83\u8fd8\u63d0\u4f9b\u6750\u6599\u96c5\u53ef\u6bd4\u77e9\u9635\uff08\u5207\u7ebf\u521a\u5ea6\uff09\uff0c\u4ece\u800c\u52a0\u5feb\u6536\u655b\u901f\u5ea6\u3002.<\/span><\/p>\n<\/li>\n

  • \n

    VUMAT<\/strong>\uff1a\u53ef\u4e0e Abaqus\/Explicit \u914d\u5408\u4f7f\u7528\uff0c\u975e\u5e38\u9002\u5408\u6a21\u62df\u78b0\u649e\u3001\u51b2\u51fb\u6216\u5927\u53d8\u5f62\u7b49\u52a8\u6001\u4e8b\u4ef6\u3002\u5b83\u53ef\u4ee5\u4e00\u6b21\u6027\u66f4\u65b0\u591a\u4e2a\u70b9\u7684\u5e94\u529b\u3002.<\/span><\/p>\n<\/li>\n<\/ul>\n

    \"UMAT<\/span><\/p>\n

    \u56fe 1\uff1aUMAT \u5b50\u7a0b\u5e8f\u5de5\u4f5c\u6d41\u7a0b<\/p>\n

    \u5178\u578b\u5b66\u4e60\u8def\u5f84<\/h3>\n

    \u5982\u679c\u4f60\u662f\u4ece\u96f6\u5f00\u59cb\uff0c\u901a\u5e38\u7684\u8def\u5f84\u5f88\u7b80\u5355\uff1a<\/span><\/p>\n

      \n
    1. \n

      \u4ece\u4e00\u4e2a \u57fa\u672c\u5f39\u6027\u6a21\u578b<\/strong> \uff08\u8fd9\u6837\u4f60\u5c31\u53ef\u4ee5\u4e86\u89e3\u7ed3\u6784\u5e76\u6d4b\u8bd5\u4f60\u7684\u8bbe\u7f6e\uff09\u3002.<\/span><\/p>\n<\/li>\n

    2. \n

      \u9010\u6b65\u589e\u52a0\u590d\u6742\u6027\u2014\u2014\u5851\u6027\u3001\u786c\u5316\u6216\u7c98\u5f39\u6027\u884c\u4e3a\u3002.<\/span><\/p>\n<\/li>\n

    3. \n

      \u4e00\u65e6\u4f60\u719f\u7ec3\u638c\u63e1\u4e86\u8fd9\u4e9b\u6280\u5de7\uff0c\u5c31\u53ef\u4ee5\u6269\u5c55\u4f60\u7684\u4ee3\u7801\uff0c\u4f7f\u5176\u5305\u542b\u635f\u574f\u3001\u6545\u969c\u6216\u901f\u7387\u76f8\u5173\u7684\u6548\u679c\u3002.<\/span><\/p>\n<\/li>\n

    4. \n

      \u6700\u540e\uff0c\u5f53\u4f60\u7684\u95ee\u9898\u6d89\u53ca\u52a8\u529b\u5b66\u6216\u5927\u53d8\u5f62\u65f6\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u5c06\u4f60\u7684 UMAT \u903b\u8f91\u79fb\u690d\u5230 VUMAT \u4e2d\u3002.<\/span><\/p>\n<\/li>\n<\/ol>\n

      \u672c\u535a\u5ba2\u5c06\u6307\u5bfc\u60a8\u5b8c\u6210\u7b2c\u4e00\u6b65\uff1a\u7f16\u5199\u548c\u6d4b\u8bd5\u4e00\u4e2a\u6700\u5c0f\u7684\u5f39\u6027 UMAT \u6a21\u578b\uff0c\u7136\u540e\u5c55\u793a\u5982\u4f55\u5c06\u76f8\u540c\u7684\u601d\u8def\u6269\u5c55\u5230 VUMAT \u6a21\u578b\u3002\u8bfb\u5b8c\u672c\u535a\u5ba2\uff0c\u60a8\u4e0d\u4ec5\u4f1a\u638c\u63e1\u7406\u8bba\u77e5\u8bc6\uff0c\u8fd8\u4f1a\u4e86\u89e3\u6784\u5efa\u66f4\u9ad8\u7ea7\u6a21\u578b\u6240\u9700\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002.<\/span><\/p>\n