Скачать или смотреть Stresses on Inclined Sections_Problem Solving

Axially Loaded Members
Problem Solving_Stresses on Inclined Sections
Problem_1
A prismatic bar having cross-sectional area A = 1200 mm2 is compressed by an axial load P = 90 kN, as shown in Fig.
(a) Determine the stresses acting on an inclined section pq cut through the bar at an angle 𝜃 = 25°.
(b) Determine the complete state of stress for 𝜃 = 25° and show the stresses on a properly oriented stress element.
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Problem_2
A compression bar having a square cross section of width b must support a load P = 8000 lb, as shown in Fig.
The bar is constructed from two pieces of material that are connected by a glued joint (known as a scarf joint) along plane pq, which is at an angle 𝛼 = 40° to the vertical. The material is a structural plastic for which the allowable stresses in compression and shear are 1100 psi and 600 psi, respectively. Also, the allowable stresses in the glued joint are 750 psi in compression and 500 psi in shear. Determine the minimum width b of the bar.