TABLE OF CONTENTS Tables C.1 and C.2 list some material constants for several common materials.
| Material | Damping factor |
|---|---|
| Steel | (5 ? 8) 10 ?4 |
| Aluminum | (2 ? 3) 10 ?4 |
| Concrete | (2 ? 3) 10 ?2 |
| Wood | (2 ? 4) 10 ?3 |
| Riveted steel truss | (2 ? 4) 10 ?2 |
| Soft rubber | (3 ? 5) 10 ?2 |
| Material | Density ?(kg/m 3) | Young's modulus E(N/m 2) | Shear modulus G(N/m 2) |
|---|---|---|---|
| Steel | 7.8 10 3 | 2.1 10 11 | 7.9 10 10 |
| Aluminum | 2.7 10 3 | 7.1 10 10 | 2.6 10 10 |
| Concrete | 1.1 10 3 | 4.2 10 9 |
|
| Beryllium copper | 8.2 10 3 | 1.2 10 11 | 4.8 10 10 |
| Soft rubber | .95 10 3 | 2.0 10 9 | 7.8 10 8 |
