Single shear joint for node-to-node connections
One aspect is an apparatus including a first node including a first bonding surface and a second node including a second bonding surface. The apparatus includes a feature configured to accept an adhesive and an adhesive channel coupled to the feature configured to accept the adhesive. The apparatus includes a shear joint coupling the first node and the second node, the shear joint configured to receive the adhesive in an adhesive region formed by the first bonding surface and the second bonding surface, the adhesive for coupling the first bonding surface to the second bonding surface through the feature configured to accept the adhesive.
1. A joint, comprising:
a first node including a first bonding surface;
a second node including a second bonding surface;
an adhesive channel within at least one of the first node or the second node and configured to accept an adhesive in an adhesive region formed by the first bonding surface and the second bonding surface, the adhesive for coupling the first bonding surface to the second bonding surface, wherein the first bonding surface and the second bonding surface are substantially flat;
grooves formed in at least one of the first or second nodes along opposite edges of the adhesive region; and
at least one O-ring fitted in the grooves to seal the edges of the adhesive region and to prevent physical contact between the first bonding surface and the second bonding surface,
wherein the at least one O-ring seal is further configured to form two loops bounding different portions of the adhesive region and a bridge between the two loops to restrict flow of the adhesive to within the bridge.
2. The joint of claim 1 , further comprising an adhesive inlet and an adhesive outlet on the at least one of the first node or the second node and including the adhesive channel.
3. The joint of claim 2 , wherein the adhesive inlet comprises an adhesive port and the adhesive outlet comprises a vacuum port.
4. The joint of claim 3 , wherein each of the adhesive port and the vacuum port comprise at least one of a protrusion or a recess.
5. The joint of claim 1 , wherein the at least one O-ring is bent across four sides of the second node.
6. The joint of claim 5 , wherein one portion of the groove is formed within the first node and another portion of the groove is formed within the second node.
7. The joint of claim 1 , wherein the at least one O-ring provides a hermetically sealed environment for the adhesive.
8. The joint of claim 1 , wherein the first bonding surface and the second bonding surface are parallel to each other.
9. The joint of claim 1 , wherein the first bonding surface and the second bonding surface are oriented to a load path by an angle.
10. The joint of claim 9 , wherein a section of the adhesive in the adhesive region remains substantially parallel with the load path.