{"id":460138,"date":"2026-06-21T07:13:13","date_gmt":"2026-06-21T07:13:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/use-the-sale-method-to-simulate-the-penetration-of-a-spherical-high-pressure-gas\/"},"modified":"2026-06-21T07:13:13","modified_gmt":"2026-06-21T07:13:13","slug":"use-the-sale-method-to-simulate-the-penetration-of-a-spherical-high-pressure-gas","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/use-the-sale-method-to-simulate-the-penetration-of-a-spherical-high-pressure-gas\/","title":{"rendered":"use the SALE method to simulate the penetration of a spherical high-pressure gas"},"content":{"rendered":"

<p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>I am trying to use the SALE method to simulate the penetration of a spherical high-pressure gas cylinder by a projectile. However, I encountered the following error:<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>“forrtl:severe (157): program exception-access violation”<\/span><\/p><p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>The simulation behaves normally when the projectile enters the cylinder, and no leakage occurs at that stage. However, when the projectile exits from inside the cylinder, the calculation crashes with the above exception as soon as the projectile just touches, or is about to touch, the inner surface of the cylinder on the exit side<\/span><span style=”font-family: \u5b8b\u4f53; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman’; mso-bidi-font-family: ‘Times New Roman’;”>\u3002<\/span><\/p><p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>The model details are as follows:The model is a 1\/4 symmetric model, using the mm-ton-N-s unit system. The projectile consists of an aluminum core and a copper jacket. The cylinder body has two layers. The meshes of the two cylinder parts share common nodes at the interface. Both cylinder layers are made of titanium alloy.<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>All solid parts are modeled with solid elements and use *MAT_JOHNSON_COOK together with *EOS_GRUNEISEN. The solid mesh size is 0.5 mm.The gas is modeled using *MAT_NULL with*EOS_LINEAR_POLYNOMIAL.<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>I used *ALE_STRUCTURED_MESH_VOLUME_FILLING to initialize the entire S-ALE background mesh as “airout”,with:RO=1.225e-12,C4=0.4,E0=0.25 which corresponds to a pressure of about 0.1 MPa.The region inside the cylinder, bounded by the inner surface of the cylinder, was initialized as “airin”, with:RO=1.225e-10,C4=0.4, E0=25 which corresponds to a pressure of about 10 MPa.<\/span><\/p><p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>I used three *ALE_STRUCTURED_FSI definitions:<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>1. coupling between “airin”. and the outer cylinder layer;<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>2. coupling between “airin”. and the inner cylinder layer;<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>3. coupling between the projectile and “airin”.<\/span><\/p><p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>For the first two FSI definitions, the “PFAC” value is defined through a user-defined curve for leakage control. For the projectile–airin coupling, “PFAC” is kept as the default value of 0.1.<\/span><\/p><p class=”MsoNormal” style=”text-indent: 21.0pt;”><span lang=”EN-US” style=”mso-bidi-font-family: ‘Times New Roman’;”>I also tried a penetration-only case without the fluid domain, and that model could reach normal termination.<\/span><\/p><p class=”MsoNormal”><span lang=”EN-US”><\/span><\/p><\/p>\n","protected":false},"template":"","class_list":["post-460138","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["460138"],"_bbp_subscription":["661171","58821","480261"],"_bbp_author_ip":["140.235.141.45"],"_bbp_last_reply_id":["460278"],"_bbp_last_active_id":["460278"],"_bbp_last_active_time":["2026-06-24 07:22:26"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["661171","58821","480261"],"_btv_view_count":["114"],"_bbp_topic_status":["unanswered"]},"test":"1595304812qq-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/460138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/460138\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=460138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}