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rb1957's latest activity
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rb1957 replied to the thread struggling with project."I would add a simple robotic arm to grab the bottle and place it in the bin. the robotic arm will have grippers. who cares if the...
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rb1957 replied to the thread Shear flow for indeterminate beam.I think you're mixing things up. in a beam with a uniform load, shear is constantly, linearly, increasing (due to the distributed...
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rb1957 replied to the thread How do I calculate forces and moments for this gripper.yeah, like post 16 ... the upper beige link is also a 3 force member, but the (tangential) force on the drive gear is almost parallel...
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rb1957 replied to the thread struggling with project.'cause it doesn't fit the problem ... "your structure here", the bottle starts somewhere else, and finishes in a 3rd place. I have no...
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rb1957 replied to the thread struggling with project.I'm thinking of a tower, that'll tip over when triggered ... maybe have longer legs on the outside (away from the target) , have these...
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rb1957 replied to the thread How to get uniform tension in a rail using dynamic/explicit analysis?.the crossties are reacting some of the rail axial load, yes? Release this freedom. the panels too are going to be picking up some of...
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rb1957 replied to the thread struggling with project.if the model is "placed" there, I don't see how it'll work (without being fixed in place) ... how to react moments ? (yes, you could use...
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rb1957 replied to the thread struggling with project.Robin, as someone mentioned above, how does the "contraption" react these loads (like pushing the bottle) ? is it securely attached to...
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rb1957 replied to the thread struggling with project.I think the bottle is empty ... just putting the bottle into the recycling bin. You built a crane and it broke. Ok, good ... how did...
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rb1957 replied to the thread Composite Anisotropy.IDK enough to be very sensible but it sounds like something to me. Can you play with the material directions to effectively flip the...
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rb1957 replied to the thread What boundary condition techniques do you use to keep FEA models realistic?.boundary conditions are one thing, the connection between elements another. It is easy to (unrealistically) weld them together; on the...
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rb1957 replied to the thread Simplle question.but if the base is truly continuously fixed to "the rest of the world", then only the standing leg would deflect (out-of-plane). But I...
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rb1957 replied to the thread Design Phase Product Integration Management- A new GA Aircraft.ok, wow ! I'm just so confused as to where you are, where you're going, etc ... we started with system interfaces, an aileron PCU got...
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rb1957 replied to the thread Simplle question.short answer ... no. first, how is this angle attached to the "rest of the world" ? I suspect some fasteners ? second (and you...
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rb1957 replied to the thread How do I calculate forces and moments for this gripper.(apologies to 3DDave ... TLDR) the torque is creating a force on the driven gear ... can you calculate this ? it makes sense to...
