Cables, wires and hoses

Deformable DAC twinax cable

A deformable direct attach copper (DAC) twinax cable with QSFP-DD or OSFP plugs and pull tabs, modeled as a stiff, heavy elastic rod for data center rack robots.

Also called direct attach copper cable, twinax cable, DAC cable or copper interconnect.

Elastic rodArticulated

Delivered as USD for NVIDIA Isaac Sim

DAC twinax cable, reference image

How is the deformable DAC twinax cable modeled?

A DAC cable is the stiffest cable in a rack: thick twinax pairs under a heavy jacket, with a tight limit on how far it may bend. We model it as an elastic rod with high bending stiffness, mass per meter measured from a real cable, and a rest shape that keeps some of the curve it was coiled in, so it pushes back when a gripper tries to route it.

Each plug is a hand-modeled rigid body with the true shell, latch and port geometry, so it seats in a standard switch cage. The pull tab behind each plug is a thin flexible strip that bends and peels back when pulled, which is how the plug is released.

Which parts of the deformable DAC twinax cable deform?

Twinax jacket
Stiff, heavy rod that resists tight bends and springs back toward its coiled shape
Boot
Stiffer section behind each plug that limits bending at the port
Pull tab
Thin flexible strip that bends when pulled to release the latch
Rigid parts
QSFP-DD or OSFP plug shells, Latch

What ships in the USD?

One USD file per variant, with the render mesh, the simulation geometry and a physics material bound to it. Every value is set and named, so you can open it in NVIDIA Isaac Sim and run your task, or read the numbers into your own solver from the material JSON.

  • Elastic rod. A centerline curve with a radius, and stiffness in bending, twisting and stretching. Used for cables, wires, hoses and ropes.
  • Articulated. Rigid links joined by revolute, prismatic or helical joints, with limits, damping and springs where the real object has them.

Where is it used?

  • Reconnecting copper links between switches and servers
  • Pulling a plug by its tab
  • Routing stiff cables in a crowded rack

Industries: Data centers, Electronics

Questions

Can the DAC stiffness match the cables in our racks?

Yes. Send us a sample or the cable spec and we tune bending stiffness, mass and the coiled rest shape to it, so the cable pushes back the way yours does.

Does the plug fit our own transceiver cage model?

The plug is modeled to the standard form factor, so it seats in a standard cage. If you have your own cage model, we check the fit against it before delivery.

Which simulators does the deformable dac twinax cable open in?

It ships as USD for NVIDIA Isaac Sim and Newton. We also deliver MJCF for MuJoCo and Genesis, a GLB mesh, and a JSON file with every material value.

Can it be matched to our real object?

Yes. Send us a sample, a drawing or a few photos and we set size, stiffness and friction to match your part.

How do we get it?

Choose your simulator, format and variant, then tell us where to send it. We prepare the files and email them to you.

Pairs with

Related assets

Cables, wires and hoses

Not in the catalog? We build any object to order, with the same physics and delivery.

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