Hi,
For one of our customers, we are modifying existing structural unit as a part of value engineering.The Structural unit is used for scanning.
In side of the unit consists of movment of table in X and Y direction.
We did static analysis of the structural unit for 4 diferent extreme positions of the XY table using FE calculations.
Then customer requested dynamic analysis of the structural unit. This is important, because after the movment XY table to one position to reaching another position, scanning starts. But it takes some time for the system to settle down, so that vibration due to XY table movement dies out.(Reaching the end position and start of the scanning). Customer has given following parameters in this regard,
Max velocity in XY direction = 16 in/sec
Acceleration = 0.72 G.
How to proceed with the analysis? We need to determine, the time required for the vibrations to decay out of the order of 0.001 in.
Is it possible to keep the table at one location and apply the specified velocity and acceleration inputs in to the table simulating the dynamic characteristics?
Or otherwise, I need to move the table with respect to time (Moving load analysis), to evaulate the dynamic characteristics?
Regards,
Logesh.E
For one of our customers, we are modifying existing structural unit as a part of value engineering.The Structural unit is used for scanning.
In side of the unit consists of movment of table in X and Y direction.
We did static analysis of the structural unit for 4 diferent extreme positions of the XY table using FE calculations.
Then customer requested dynamic analysis of the structural unit. This is important, because after the movment XY table to one position to reaching another position, scanning starts. But it takes some time for the system to settle down, so that vibration due to XY table movement dies out.(Reaching the end position and start of the scanning). Customer has given following parameters in this regard,
Max velocity in XY direction = 16 in/sec
Acceleration = 0.72 G.
How to proceed with the analysis? We need to determine, the time required for the vibrations to decay out of the order of 0.001 in.
Is it possible to keep the table at one location and apply the specified velocity and acceleration inputs in to the table simulating the dynamic characteristics?
Or otherwise, I need to move the table with respect to time (Moving load analysis), to evaulate the dynamic characteristics?
Regards,
Logesh.E