In this session we will discuss basic equation of motion and vibration. Relation of governing equation and newtons laws of motion. Learn "logarithmic decrement" and "half power bandwidth" method used to determine the damping ratio of a structure. How to define damping in Ansys. "Rayleigh damping" components such as "mass damping" and "stiffness damping". Damped modal analysis example and tutorial. What is "stability" the "damped modal analysis". Basic relations vibration governing equation. What is "stability is damped modal analysis". How to identify stable modes in "damped modal analysis".
"fea" "finite element analysis" "cae"
"ansys" "ansys workbench" "modal analysis" "ansys modal analysis" "fea" "finite element analysis" "cae"
"ansys" "ansys workbench"
00:20 content
01:13 subscribe
01:30 determine damping of structure
01:48 basic equation of motion
01:55 single degree of freedom system SDOF
02:20 newtons second law of motion
02:26 newtons first law of motion
03:40 newtons third law of motion
05:35 phase angle
05:50 critical damping
06:05 damping ratio
06:12 damped natural frequency, relation between damped natural frequency and undamped natural frequency
06:30 logarithmic decrement
07:19 half power bandwidth
09:03 ryleigh damping
09:30 mass damping
10:00 stiffness damping
11:55 what is satble mode
12:10 dynamic stable mode
14:18 create beam in spaceclaim
15:35 fixed support
15:50 frictionless support
16:30 define damping in ansys
17:00 define total damping
21:04 deformation and stress in modal analysis
22:04 forward whirl and backward whirl
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