{"id":19918115,"url":"https://github.com/jfriedlein/ushl_ls-dyna_fortran","last_synced_at":"2026-06-08T02:31:38.114Z","repository":{"id":237162240,"uuid":"793938228","full_name":"jfriedlein/ushl_LS-Dyna_Fortran","owner":"jfriedlein","description":"Basics to implement user-defined shell elements (ushl, uel) in LS-Dyna with Fortran ","archived":false,"fork":false,"pushed_at":"2024-12-19T07:54:30.000Z","size":156,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-03-01T09:46:10.090Z","etag":null,"topics":["axisymmetry","documentation","element","element-formulation","fortran90","ls-dyna","plane-strain","resultant-element","tutorial","uel","user-defined-element","user-element","ushl"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/jfriedlein.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2024-04-30T06:43:30.000Z","updated_at":"2024-12-20T10:44:57.000Z","dependencies_parsed_at":"2024-12-19T08:28:23.682Z","dependency_job_id":"bd3a3be4-e3df-46e7-b3c8-3332e2a99417","html_url":"https://github.com/jfriedlein/ushl_LS-Dyna_Fortran","commit_stats":null,"previous_names":["jfriedlein/ushl_ls-dyna_fortran"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/jfriedlein/ushl_LS-Dyna_Fortran","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jfriedlein%2Fushl_LS-Dyna_Fortran","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jfriedlein%2Fushl_LS-Dyna_Fortran/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jfriedlein%2Fushl_LS-Dyna_Fortran/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jfriedlein%2Fushl_LS-Dyna_Fortran/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/jfriedlein","download_url":"https://codeload.github.com/jfriedlein/ushl_LS-Dyna_Fortran/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jfriedlein%2Fushl_LS-Dyna_Fortran/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":34046003,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-06-08T02:00:07.615Z","response_time":111,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["axisymmetry","documentation","element","element-formulation","fortran90","ls-dyna","plane-strain","resultant-element","tutorial","uel","user-defined-element","user-element","ushl"],"created_at":"2024-11-12T21:53:05.906Z","updated_at":"2026-06-08T02:31:38.098Z","avatar_url":"https://github.com/jfriedlein.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# ushl_LS-Dyna_Fortran\nBasics to implement user-defined shell elements (ushl, uel) in LS-Dyna with Fortran \n\nFocus here is on 2D elements for plane strain and axisymmetry, not on actual shell elements\n\n## Generalised interface for use of separate element subroutines for 2D plane strain and axisymmetry\nIf you use a separate subroutine (e.g. a function that computes the force vector and stiffness matrix based on the displacement vector) for the element formulation or e.g. AceGen to generate the element routine, I can recommend the general interface stated in \"ushl_e101_generalInterface.f\".\n\n## Numerical examples\nThe folder \"numericalExamples_LS-Dyna\" contains examples to test user-shell elements for plane strain and axisymmetry.\nThe folder \"userLoading_LS-Dyna\" contains the modified subroutine loadud to apply constant pressure on an edge of a shell element to enable plane strain or axisymmetric pressure loading of user-shell elements.\n\n\n## todo\n- \"UEL_helper_Fortran_LS-Dyna\" is included as submodule in git, but is therefore not downloaded when using \"Code\"-\u003e\"Download ZIP\". This is a common (and annoying) limitation/bug in git (status 2024). Please manually download the submodule or clone the entire repo (including submodules)\n- function \"isNan(*)\" is only available for ifort compiler, e.g. not for pgi. Maybe use ( a /= 1 ) or ( a == NaN )?\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjfriedlein%2Fushl_ls-dyna_fortran","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjfriedlein%2Fushl_ls-dyna_fortran","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjfriedlein%2Fushl_ls-dyna_fortran/lists"}