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Hello, I am trying to model elstomeric seismic isolator LS-PrePost. I used 'MAT_SEISMIC_ISOLATOR', 'ELEMENT_BEAM', 'SECTION_BEAM' keywords to create it. As it is described in LS Dyna manual, I chose element formulation option 6 which is discrete beam. My problem is not having control on discrete beam cross section size. I appreciate if someone helps me to solve this problem. Thank you. MAT_SEISMIC_ISOLATOR.pdf