H 100 Q3 A 2 Degrees Of Freedom Dofs Spring Mass System Model Is Shown In Figure 3 The Two Identical Masses Are Made 1 (41.62 KiB) Viewed 69 times
H 100 Q3 A 2 Degrees Of Freedom Dofs Spring Mass System Model Is Shown In Figure 3 The Two Identical Masses Are Made 2 (14.4 KiB) Viewed 69 times
H 100 Q3. A 2 Degrees of Freedom (DOFs) spring mass system model is shown in Figure 3. The two identical masses are made from alloy steel and are constrained to move only in the X axis. Three springs each of stiffness 200N/m are added as shown in Figure 1. The frame is a fixed frame and has no motion (You can construct a frame of alloy steel and assumed of any dimensions or simplified by using two fixed mass at the extreme end as presented in the lecture class). Using the SolidWorks frequency analysis tools, determine (i) the natural frequencies of the system. Assume the dimensions of the two masses to be 20mm*20mm*20mm. (ii) Find out the natural frequencies of the system assuming the two identical masses are made from Aluminum T6-6061 (Assume the frame to be alloy steel). (iii) Explain why the [20+10+10=40 Marks] answers in (i) and (ii) are different?
m WW m2 - X axis Fixed Frame Figure 3: 2 DOFs Spring Mass Systems Model
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