{"id":5859,"date":"2026-07-22T15:43:59","date_gmt":"2026-07-22T15:43:59","guid":{"rendered":"https:\/\/www.compassis.com\/?p=5859"},"modified":"2026-07-22T19:01:19","modified_gmt":"2026-07-22T19:01:19","slug":"lloids-aip-emmr","status":"publish","type":"post","link":"https:\/\/www.compassis.com\/en\/news\/lloids-aip-emmr\/","title":{"rendered":"A significant achievement for
SeaFEM’s Hydroelastic analysis solution"},"content":{"rendered":"\n

We are proud to announce that Lloyd\u2019s Register has granted an Approval in Principle (AiP) for the Enriched Modal Matrix Reduction (EMMR) <\/strong>methodology for hydro-structural analysis implemented in SeaFEM. This achievement is the result of the close collaboration between Lloyd\u2019s Register, CIMNE and CompassIS.<\/p>\n\n\n\n

This is the first AiP granted by Lloyd\u2019s Register<\/strong> for a reduced-order structural analysis methodology accounting for hydroelastic effects, recognising that the EMMR approach is capable of performing fully coupled time-domain hydro-elastic structural analyses<\/strong> while maintaining numerical accuracy comparable to that of a full-order finite element model.<\/p>\n\n\n\n

\"Comparison
Comparison of results between MMR (Modal Matrix Reduction) and the traditional FEM method<\/figcaption><\/figure>\n\n\n\n

The EMMR methodology, implemented in SeaFEM, was jointly developed by CIMNE and CompassIS in collaboration with<\/strong> ETSI Navales<\/a><\/strong> and independently reviewed by Lloyd’s Register as part of the AiP process.<\/p>\n\n\n\n

\"Modal
Modal analysis<\/figcaption><\/figure>\n\n\n\n

We sincerely thank all the partners involved<\/strong> for their commitment, expertise and excellent collaboration. We look forward to continuing this partnership and further advancing hydro-elastic structural analysis for the offshore and naval industries.<\/p>\n","protected":false},"excerpt":{"rendered":"

We are proud to announce that Lloyd\u2019s Register has granted an Approval in Principle (AiP) for the Enriched Modal Matrix Reduction (EMMR) methodology for hydro-structural… Continue reading A significant achievement for
SeaFEM’s Hydroelastic analysis solution<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":5862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[413,205,223,83,239,412,410,161,414,240,300,408,286,411,49,194,416],"class_list":["post-5859","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-certification","tag-cimne","tag-compassis","tag-engineering-2","tag-fem-en","tag-finitelements","tag-hydroelasticity","tag-innovation","tag-lloydsregister","tag-navalarchitecture","tag-numericalsimulation","tag-offshore","tag-offshorewind","tag-reducedordermodel","tag-seafem-en","tag-structural-analysis","tag-upm","entry"],"yoast_head":"\nLLoyd's register has granted an AiP for the Modal Matrix Reduction methodology<\/title>\n<meta name=\"description\" content=\"SeaFEM's EMMR methodology for hydro-elastic structural analysis has earned an Approval in Principle (AiP) from Lloyd's Register. 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