I had used pac_mc_120_70R17_cross.tir and 3d_bump.rdf road in my Model in Adams view 2019 where there is no need to define contact between tire and road. But when I changed the roads to other than 3d_bump.rdf ( I tried road_3d_sine_example.rdf ), the bike fell down through roads which means there is no default contact between tire and road in this case. Should I define the contact force between tire and road or something I have missed?
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