- #1
Alex Mondal
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Hello all,
I am calculating the loads on an unconstrained structure in space that is accelerating. There is a constant known force (T) being applied to it at one end (point A). The structure is a rocket with distributed mass but let's assume it is a uniform beam with constant density. I would like to know the load and bending moments across the length of this beam structure. The force of the weight acts at the center of mass (L/2 for an uniform beam). For a classic rigid beam problem, the force applied would be constant throughout. However, because the system is unconstrained, point A sees the magnitude of the force applied while point b, at the other end, sees a zero load. I also don't understand how to couple the fact that the structure is accelerating. If the structure experiences 3 g's (3 times the acceleration Earth's gravity) it will experience a load that is higher then the applied load T. Is my logic correct?
In the end I would like to have mass points along this vehicle with rough moments of inertia of the vehicle. Then if I determine linear and angular acceleration, I can determine the load and moment distribution.
Thank you in advance.
Regards,
-Alex M.
Austin, Tx
I am calculating the loads on an unconstrained structure in space that is accelerating. There is a constant known force (T) being applied to it at one end (point A). The structure is a rocket with distributed mass but let's assume it is a uniform beam with constant density. I would like to know the load and bending moments across the length of this beam structure. The force of the weight acts at the center of mass (L/2 for an uniform beam). For a classic rigid beam problem, the force applied would be constant throughout. However, because the system is unconstrained, point A sees the magnitude of the force applied while point b, at the other end, sees a zero load. I also don't understand how to couple the fact that the structure is accelerating. If the structure experiences 3 g's (3 times the acceleration Earth's gravity) it will experience a load that is higher then the applied load T. Is my logic correct?
In the end I would like to have mass points along this vehicle with rough moments of inertia of the vehicle. Then if I determine linear and angular acceleration, I can determine the load and moment distribution.
Thank you in advance.
Regards,
-Alex M.
Austin, Tx