{"id":458963,"date":"2026-05-28T14:53:55","date_gmt":"2026-05-28T14:53:55","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulation-of-contact-between-suction-cup-and-rigid-part\/"},"modified":"2026-05-28T14:53:55","modified_gmt":"2026-05-28T14:53:55","slug":"simulation-of-contact-between-suction-cup-and-rigid-part","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/simulation-of-contact-between-suction-cup-and-rigid-part\/","title":{"rendered":"Simulation of contact between suction cup and rigid part"},"content":{"rendered":"

<p data-start=”61″ data-end=”177″>I am trying to simulate the attachment between a rubber suction cup and a rigid\/plastic part due to vacuum pressure<\/p><h3 data-section-id=”1k4ofxk” data-start=”179″ data-end=”196″>Current setup<\/h3><ul data-start=”197″ data-end=”362″><li data-section-id=”jlzsy9″ data-start=”197″ data-end=”239″>Hyperelastic suction cup (Mooney-Rivlin)<\/li>\n

<li data-section-id=”1sx8pp3″ data-start=”240″ data-end=”281″>Frictional contact between cup and part<\/li>\n

<li data-section-id=”1vhzoul” data-start=”282″ data-end=”334″>Negative pressure applied on internal cup surfaces<\/li>\n<\/ul>\n

<h3 data-section-id=”ydusx9″ data-start=”364″ data-end=”375″>Problem<\/h3><p data-start=”376″ data-end=”579″>The vacuum pressure deforms the cup, but the part separates instead of remaining attached. It seems the pressure only acts on the cup and does not generate the expected suction holding force on the part.<\/p><h3 data-section-id=”197y263″ data-start=”581″ data-end=”594″>Questions<\/h3><\/p>\n

    <li data-section-id=”1eszei1″ data-start=”595″ data-end=”654″>What is the correct way to model vacuum suction contact?<\/li>\n

    <li data-section-id=”1hvl2ni” data-start=”655″ data-end=”705″>Is internal negative pressure alone sufficient?<\/li>\n

    <li data-section-id=”u82b10″ data-start=”706″ data-end=”775″>How should the pressure transfer to the contacted part be modeled?<\/li>\n

    <li data-section-id=”1tfkvrt” data-start=”918″ data-end=”1072″>Is there a recommended method in <span class=”whitespace-normal”>LS-DYNA<\/span> or <span class=”whitespace-normal”>ANSYS Mechanical<\/span> for suction cup attachment simulations?<\/li>\n<\/ol>\n

    <p data-start=”1074″ data-end=”1129″ data-is-last-node=”” data-is-only-node=””>Any guidance or example workflows would be appreciated<\/p><p data-start=”1074″ data-end=”1129″ data-is-last-node=”” data-is-only-node=””>\"\"<\/p><p data-start=”1074″ data-end=”1129″ data-is-last-node=”” data-is-only-node=””>\"\"<\/p><p data-start=”1074″ data-end=”1129″ data-is-last-node=”” data-is-only-node=””>\"\"<\/p><\/p>\n","protected":false},"template":"","class_list":["post-458963","topic","type-topic","status-publish","hentry","topic-tag-lsdyna","topic-tag-vacuum-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["458963"],"_bbp_subscription":["692960","240"],"_bbp_author_ip":["150.140.150.40"],"_bbp_last_reply_id":["458972"],"_bbp_last_active_id":["458972"],"_bbp_last_active_time":["2026-05-28 21:37:53"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["692960","240"],"_btv_view_count":["30"],"_bbp_topic_status":["unanswered"]},"test":"b-mavroeidis2gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458963","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\/458963\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=458963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}