This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Sec_2.8-2.12.qxd 214 9/25/08 11:43 AM Page 214 CHAPTER 2 Axially Loaded Members (b) MAXIMUM TENSILE STRESS (EQ. 2–55)
L smax (c) IMPACT FACTOR (EQ. 2-61) ; 26,000 psi Impact factor dmax
dst 0.0312 in.
130 ; Problem 2.8-4 A block weighing W 5.0 N drops inside a cylinder
200 mm onto a spring having stiffness k 90 N/m from a height h
(see figure). Block (a) Determine the maximum shortening of the spring due to the
impact, and (b) determine the impact factor. Cylinder h k Prob. 2.8-4 and 2.8-5 Solution 2.8-4 W 5.0 N Block dropping onto a spring h 200 mm k 90 N/m (a) MAXIMUM SHORTENING OF THE SPRING
k 5.0 N
90 N/m Eq. (2-53): dmax 55.56 mm
dst c 1 + a 1 +
215 mm ; 2h 1/2
dst (b) IMPACT FACTOR (EQ. 2-61)
Impact factor dmax
dst 215 mm
3.9 ; ...
View Full Document
This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.
- Fall '11