i want to make an 3D model (like rail with sleeper supported on rigid base ), i want assume that there in no strain in the direction of rail (using plain strain condition), can i do this in abaqus 2019. just give me hint. it will be helpful to me .actually i am beginner

i have seen the option of plain strain thickness while making material section. is it related to 3D plain strain condition ??

and i think plain strain type of mesh element only available for 2D plan model??

guide me. it will helpful to me a lot , thanks