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Bonded contacts between solid bodies (or not)

Question asked by Eric Christison on May 15, 2018
Latest reply on May 16, 2018 by Bill McEachern

I'm having trouble getting solid bodies to stick together properly. Before I tear out the last of my remaining hair perhaps someone can tell me what's going wrong.

I'm modelling a double cantilever beam with made with two different materials of different thicknesses. I want to model a crack at the free end of the beam and pull the crack apart. To do that I've made each component of the beam into three solid bodies. I can then have no penetration between the surfaces at the end of the beam to simulate the crack and everything else is bonded together, see below.

The contact visualization plot seems OK to me.

..but when I run the analysis


The same lack of bonding is present between the vertical faces of the smaller beam as well.


For each beam I've selected bonded component contact between each of the bodies in each of the beams but I seem to be getting only contact between the horizontal faces even though the visualization tells me the vertical faces are bonded as well.