Refer to Fig. P18-50. The timber beam with a full-size, 4-in. X 6-in. rectangu- lar section has a simple span of 6 ft and supports a uniform load of 500 lb/ft. including its own weight. Determine the principal stresses and the direc tions of the principal planes at points A, B, and C. Show the results on a properly oriented element.

Refer to Fig. P18-50. The timber beam with a full-size, 4-in. X 6-in. rectangu- lar section has a simple span of 6 ft and supports a uniform load of 500 lb/ft. including its own weight. Determine the principal stresses and the direc tions of the principal planes at points A, B, and C. Show the results on a properly oriented element.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

Problem 7.2.25P: At a point on the web of a girder on an overhead bridge crane in a manufacturing facility, the...

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Concept explainers

Stress transformation

The term stress indicates the measure of internal forces that develop due to an external force's application on an object. When a specific external force is applied to an object, internal stress generates in the material. The value of stress can obtain by taking the ratio of the externally applied force and cross-sectional area of the object. There are different types of stress depending on the type of external force.

Question

Determine the pricipal stresses and the directions of the principal stresses at points A

Refer to Figure P18-50

Refer to Fig. P18-50. The timber beam with a full-size, 4-in. X 6-in. rectangu-
lar section has a simple span of 6 ft and supports a uniform load of 500 lb/ft.
including its own weight. Determine the principal stresses and the direc
tions of the principal planes at points A, B, and C. Show the results on a
properly oriented element.

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