young 1 Report post Posted October 24 Hi,everybody, I need to fix time increment in my load step , have set NLADAPT>DIRECT>YES,and referece this load in my loadstep. But the solver seems to ignore it and keeps increasing the incerement size.Can somebody give me an advice on what I could do to solve this issue? Thank you very much! Quote Share this post Link to post Share on other sites
cfuser 2 Report post Posted October 24 Hi Young, could you also share your NLPARM entry, please? Quote Share this post Link to post Share on other sites
young 1 Report post Posted October 24 6 minutes ago, cfuser said: Hi Young, could you also share your NLPARM entry, please? hi cfuser，my NLparm entry likes this， Quote Share this post Link to post Share on other sites
Farouk Maaboudallah 8 Report post Posted October 25 (edited) On 10/24/2019 at 6:46 AM, young said: hi cfuser，my NLparm entry likes this， Hi Young, It's weird. I ran a non linear static simulation (frictional contact model). I used this configuration (for NLADAPT, NLOUT and NLPARM respectively) : and It worked well ... If it's not confidential, can you please share your model or verify the time increment story in simple model than you can share it ? Best regards, Edited October 25 by Farouk Maaboudallah Tabulation problem Quote Share this post Link to post Share on other sites
Farouk Maaboudallah 8 Report post Posted October 25 To be sure : I repeated the same simulation. Instead of using 0.1 I used 0.05 and it worked well ... Please keep me in touch. Quote Share this post Link to post Share on other sites
young 1 Report post Posted October 29 On 10/26/2019 at 3:27 AM, Farouk Maaboudallah said: To be sure : I repeated the same simulation. Instead of using 0.1 I used 0.05 and it worked well ... Please keep me in touch. Hi, Thank you for your reply, I tried the configuration as you said, but it not works very well，still keeps increasing the incerement size.I try a simple case likes this： aa.fem Quote Share this post Link to post Share on other sites
Hyperman 286 Report post Posted October 29 Hi, Increment adjustment is automatic by default PARAM>EXPERTNL>AUTO. Try with PARAM>EXPERTNL>NO instead. Quote Share this post Link to post Share on other sites
young 1 Report post Posted October 29 1 hour ago, Hyperman said: Hi, Increment adjustment is automatic by default PARAM>EXPERTNL>AUTO. Try with PARAM>EXPERTNL>NO instead. Hi，hyperman, I have tried this setting as you said，it worked well, the increment size is fixed.Thank you very much. But, in other case ,I haven't keep expernel>no, just be sure the DTmax equals to DTmin, the increment can be fixed, so 8s this setting（ PARAM>EXPERTNL>NO） only necessary in some cases？ Looking forward your reply. Quote Share this post Link to post Share on other sites
Hyperman 286 Report post Posted October 29 The increment can be fixed using either: DTmax=DTmin PARAM>EXPERTNL>NO However NLADAPT>DIRECT>YES does not work for some reason. Rahul R likes this Quote Share this post Link to post Share on other sites
young 1 Report post Posted October 30 12 hours ago, Hyperman said: The increment can be fixed using either: DTmax=DTmin PARAM>EXPERTNL>NO However NLADAPT>DIRECT>YES does not work for some reason. Thank you very much. Quote Share this post Link to post Share on other sites
