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Q4/ For the lower limb prosthesis figure 1 below, find the maximum stress at point (A) due to the ground reaction force which can reach to 875N. The shank cross section area dimensions are (inner D=20mm, outer D=24mm), the distance between the ground reaction force and the socket center is 1.5cm. TUBE IS VERTICAL FOOT IS FLAT PLUMBLINE IS MEDIALLY DISPLACED

Q4/ For the lower limb prosthesis figure 1 below, find the maximum stress at point (A) due to the ground reaction force which can reach to 875N. The shank cross section area dimensions are (inner D=20mm, outer D=24mm), the distance between the ground reaction force and the socket center is 1.5cm. TUBE IS VERTICAL FOOT IS FLAT PLUMBLINE IS MEDIALLY DISPLACED

Structural Analysis
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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Q4/ For the lower limb prosthesis figure 1 below, find the maximum stress at point (A) due to the ground reaction force which can reach to 875N. The shank cross section area dimensions are (inner D=20mm, outer D=24mm), the distance between the ground reaction force and the socket center is 1.5cm. A TUBE IS VERTICAL FOOT IS FLAT 2-3 PLUMBLINE IS MEDIALLY DISPLACED
Transcribed Image Text:Q4/ For the lower limb prosthesis figure 1 below, find the maximum stress at point (A) due to the ground reaction force which can reach to 875N. The shank cross section area dimensions are (inner D=20mm, outer D=24mm), the distance between the ground reaction force and the socket center is 1.5cm. A TUBE IS VERTICAL FOOT IS FLAT 2-3 PLUMBLINE IS MEDIALLY DISPLACED
Expert Solution
Step 1

Objective: To determine the maximum stress at point A.

 

Given:

Maximum ground reaction force (F) = 875 N

Inner diameter of the tube (d) = 20 mm

Outer diameter of the tube (D) = 24 mm

Distance of the line of action of the ground reaction force from the socket center (e) = 1.5 cm

 

The stresses acting at point A can be broken down as:

(1) Direct axial compression

(2) Indirect bending compression and tension

 

The maximum stress at A will be the result of the direct axial compression and the indirect bending compression.

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