A rigid beam is supported by bar DE. If the vertical displacement of point D is to be less than 0.1 in, what is the minimum cross-sectional area of bar DE? Assuming that area, what is the stress state at p in the coordinate system shown?

A rigid beam is supported by bar DE. If the vertical displacement of point D is to be less than 0.1 in, what is the minimum cross-sectional area of bar DE? Assuming that area, what is the stress state at p in the coordinate system shown?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

Problem #1
A rigid beam is supported by bar DE. If the vertical
displacement of point D is to be less than 0.1 in, what is the
minimum cross-sectional area of bar DE? Assuming that area,
what is the stress state at p in the coordinate system shown?
12 ft
800 lb
-5 ft
B
800 lb
5 ft
Bar DE:
E 30000 ksi
v = 0.29
point p
to
6 ft
E

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Step 1: Determining force in bar DE.

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Step 3: Determining stress at point p

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