February 18, 2022 at 6:24 pmking79Subscriber
I am trying to model the interaction between two parts using *CONTACT_ENTITY in Ls-Dyna. I keep getting the following error message:
*** Error 20953 (STR+953)
entity number= 1 local X vector has zero length.
*** Error 20954 (STR+954)
entity number= 1 local Y vector has zero length.
*** Error 20018 (STR+18)
input phase completed with 2 fatal errors
I have checked the Ls-Dyna manual but cannot find a solution to this problem. Do you have any suggestions? ThanksFebruary 21, 2022 at 7:29 pmtslavikAnsys EmployeeYou must define local axes on Cards 3 and 4 of *CONTACT_ENTITY with the variables AX, AY, AZ and BX, BY, BZ. Presently, it seems they are defined as "0" or otherwise invalid. Please refer to Remark #3 of *CONTACT_ENTITY for more details.
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