3 2. Figure 2 shows a beam AB supported by a deformable rubber damper to absorb...

Transcribed Image Text:

3 2. Figure 2 shows a beam AB supported by a deformable rubber damper to absorb vibration. Below the damper is safety bracket. The normal vertical load on each damper is P. The detail parts and dimension of the damper is shown in Figure 3. The rubber absorber dimension is thickness T, width, W and height H. P-15 H=182mm, W=194mm,T=50mm S1=65.S2=52 The spacing, S, is the distance between beam bracket and safety bracket. When no load (P-0), S = S1. When P is applied, S reduces to S2 (S = S2). Assume that there is no displacement at the wall (1 e no slip between rubber and backing plate and beam bracket). You are required to deduce (determine) the following: (a) Shear strain y in rubber when P is applied (b) Shear stress, t in rubber when P is applied (c) The value of shear modulus of rubber G used in the system. [3 marks] [3 marks] [4 marks] A 3 2. Figure 2 shows a beam AB supported by a deformable rubber damper to absorb vibration. Below the damper is safety bracket. The normal vertical load on each damper is P. The detail parts and dimension of the damper is shown in Figure 3. The rubber absorber dimension is thickness T, width, W and height H. P-15 H=182mm, W=194mm,T=50mm S1=65.S2=52 The spacing, S, is the distance between beam bracket and safety bracket. When no load (P-0), S = S1. When P is applied, S reduces to S2 (S = S2). Assume that there is no displacement at the wall (1 e no slip between rubber and backing plate and beam bracket). You are required to deduce (determine) the following: (a) Shear strain y in rubber when P is applied (b) Shear stress, t in rubber when P is applied (c) The value of shear modulus of rubber G used in the system. [3 marks] [3 marks] [4 marks] A

Answer rating: 100% (QA)

Answer P 15KN H 182mm W 194 mm T 50 mm S 1 65 mm S 2 52 mm a For the small value of tan stra... View the full answer