Hi,
I am trying to understand what is physical interpretation of inertia drive effect versus inertia coast effect in driveline theory.
Why are these effects = angular accelerations different in multishaft drivelines?
Hi,
We are going to measure accelerations from piece of machinery. Goal really is displacement by double integration.
Before attempting this, I have done some preliminary work with simple cantilever beam. In short, I glued a strain gage to fixed end and mounted single axis accelerometer to the...
Hi,
We are testing effect of accumulator in rock drill concept. We have mounted two tri-accelerometers in hydraulic hoses that feed the drill to capture the difference in acceleration/frequency, if any.
To my surprise, results were fairly same.
Now, I would be interested in position...
Consider boom with stain gauges glued at the support of the boom.You know the weight of the boom and all the accessories. Let's say you do zero balance when boom is horizontal pointing straight ahead. Now you move the boom into known positions and as a result you get known strains. I feel it...
Hi,
To get velocity from acceleration data we integrate once. Integrating velocity we get displacement.
Acceleration data is in time domain.
Velocity is given by integrating acceleration in time domain and same for displacement or integrating acceleration in frequency domain to get velocity...
Hello
I am modeling symmetric load carrying welded cruciform joint under four point bending. Why does extreme tensile fiber stress dips below nominal fiber stress(far away from weld) at about thickness away from the weld toe before peaking due to discuntinuity of weld? Tensile case is clear...
Greetings,
Consider simple shaft supported at both ends with disk in the middle. One end free in axial direction, transverse rotations are free. Other end is constrained in axial rotation, all translations constrained.
Why are torsional vibration frequencies higher if considering prestress in...
Greetings,
I am working with Patran. For fairly large model ~100 000 shell elements I am getting the following in the output file. I am running normal modes analysis.
MAIN: The FPU has been reset after floating point exception.
MAIN: For reference, A(MAINAL) = 73C3B0, A(/SYSTEM/) =...
Greetings,
I am getting peculiar results on rotor frequencies. Adding constraints to two bearing locations of the rotor lowers natural frequencies. One would expect to have higher frequencies as compared to non-constrained rotor. I am not considering rigid mody modes. I am using beam and shell...
I get peculiar results from turbine rotor. Adding constraints to bearing locations lowers natural frequencies. Higher frequencies with no constraints comparing to same mode shapes as in constrained model. No damping included at bearing locations. Beam and shell elements are used. Adding any...
I get peculiar results from turbine rotor. Adding constraints to bearing locations lowers natural frequencies. Higher frequencies with no constraints comparing to same mode shapes as in constrained model. No damping included at bearing locations. Beam and shell elements are used. Adding any...
