{"id":451867,"date":"2026-02-03T11:15:06","date_gmt":"2026-02-03T11:15:06","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-change_curve_definition\/"},"modified":"2026-02-03T11:15:06","modified_gmt":"2026-02-03T11:15:06","slug":"problem-with-change_curve_definition","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-change_curve_definition\/","title":{"rendered":"Problem with *CHANGE_CURVE_DEFINITION"},"content":{"rendered":"<p>&lt;p data-start=&#8221;104&#8243; data-end=&#8221;116&#8243;&gt;Hi everyone,&lt;\/p&gt;&lt;p data-start=&#8221;118&#8243; data-end=&#8221;215&#8243;&gt;I&rsquo;m relatively new to LS-DYNA and I&rsquo;m facing a problem with the *CHANGE_CURVE_DEFINITION command.&lt;\/p&gt;&lt;p data-start=&#8221;217&#8243; data-end=&#8221;271&#8243;&gt;In my initial input deck, I define a curve as follows:&lt;\/p&gt;&lt;p&gt;*DEFINE_CURVE&lt;br&gt;$ &nbsp; &nbsp; &nbsp; ID &nbsp; &nbsp; &nbsp;sidr &nbsp; &nbsp; &nbsp; sfa &nbsp; &nbsp; &nbsp; sfo &nbsp; &nbsp; &nbsp;offa &nbsp; &nbsp; &nbsp;offo &nbsp; &nbsp;dattyp &nbsp; unused1&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1 &nbsp; &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; 0.0 &nbsp; &nbsp; &nbsp; 0.0 &nbsp; &nbsp; &nbsp; 0.0 &nbsp; &nbsp; &nbsp; 0.0 &nbsp; &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; &nbsp; 0&lt;br&gt;$# &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;a1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;o1&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.0&lt;br&gt;$ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;o1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; unused1&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2.0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.05&lt;\/p&gt;&lt;p data-start=&#8221;673&#8243; data-end=&#8221;791&#8243;&gt;Now I want to change this curve after a restart, but the *CHANGE_CURVE_DEFINITION command does not work as I expected.&lt;\/p&gt;&lt;p data-start=&#8221;793&#8243; data-end=&#8221;814&#8243;&gt;I used it as follows:&lt;\/p&gt;&lt;p&gt;*CHANGE_CURVE_DEFINITION&lt;br&gt;$ &nbsp; &nbsp; &nbsp; ID&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&lt;br&gt;$# &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;a1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;o1&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2.0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.5&lt;br&gt;$ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;o1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; unused1&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4.0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.5&lt;\/p&gt;&lt;p data-start=&#8221;793&#8243; data-end=&#8221;814&#8243;&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;When I run the restart, I get the following error:&lt;\/p&gt;&lt;p&gt;&lt;br&gt;&nbsp;*** Error 10246 (KEY+246)&lt;br&gt;&nbsp; &nbsp; &nbsp;line contains improperly formatted data&lt;br&gt;&nbsp; &nbsp; &nbsp; reading *CHANGE_CURVE card.&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; At line# 9 of file&lt;br&gt;&nbsp;d:\\lsdyna\\restart\\inputbalken_r.k&lt;br&gt;&nbsp;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.5&lt;br&gt;&nbsp;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;&lt;br&gt;&nbsp;&lt;br&gt;&nbsp;*** Warning 10453 (KEY+453)&lt;br&gt;&nbsp; &nbsp; &nbsp;blank line where command expected&lt;br&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; At line# 11 of file&lt;br&gt;&nbsp;d:\\lsdyna\\restart\\inputbalken_r.k&lt;br&gt;&nbsp;&lt;br&gt;&nbsp;*** Error 10133 (KEY+133)&lt;br&gt;&nbsp; &nbsp; &nbsp;input data failed with: 2 errors&lt;\/p&gt;&lt;p&gt;&nbsp;E r r o r &nbsp; t e r m i n a t i o n&nbsp;&lt;\/p&gt;&lt;p data-start=&#8221;1667&#8243; data-end=&#8221;1752&#8243;&gt;How do I use the *CHANGE_CURVE_DEFINITION command properly, or what am I doing wrong?&lt;\/p&gt;&lt;p data-start=&#8221;1754&#8243; data-end=&#8221;1772&#8243;&gt;Thanks in advance!&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-451867","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["451867"],"_bbp_subscription":["647770","58821"],"_bbp_author_ip":["141.44.152.50"],"_bbp_last_reply_id":["452075"],"_bbp_last_active_id":["452075"],"_bbp_last_active_time":["2026-02-05 12:21:05"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["647770","58821"],"_btv_view_count":["87"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1770118720:647770"]},"test":"malte-koehnovgu-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/451867","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\/451867\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=451867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}