Consider a cantilever truss with variable section (figure 7.3). Determine the forces and types of stress in the bars using the CREMONA and RITTER method. Exercice 3:Soit une ferme en porte-à-faux à section variable (figure 7.3), Déterminer par la méthode deCREMONA et de RITTER les efforts et les types de sollicitation dans les barres dans les barres.2Figure 7.3

Step 1: Understanding the TrussThe truss is cantilevered with varying sections and different lengths…

Answered: Exercice 3: Soit une ferme en…

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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The portion of the truss shown represents the upper part of a power transmission line tower. For the given loading, determine the force in each of the members located above members HJ. State whether 2. each member is in tension or compression. Ans: AB = DF = 2.29 kN T; AC = EF = 2.29 kN C; BD = 2.21 kN T; BC = DE = 0.60 kN C; BE = EH = 0; CE = 2.21 kN C; CH = EJ = 1.20 kN C %3D
The steel truss (E =200 GPa) shown in figure below has a cross-sectional area of 1920 mm². Determine: a. The largest allowable load F if the change in length of member BD is not to exceed 1.6 mm and a factor of safety of 2.5. b. The displacement of support D due to the load calculated in part a. 5m 6m A C F
A pin-jointed truss ABC shown below consists of two links AB and BC. These links are 6 mm thick and 20 mm wide as shown. There are support brackets at A and C. All pins are 12 mm in diameter and a vertical force, P = 9 kN is applied at pin B as shown. The angle 0 =38 deg. and the angle ẞ = 0 + 20 deg. The normal stress in link AB is (The result is accurate to one decimal place, in the unit MPa. Please write down only the value of your final result) · 12mm 9 20mm -1.0m⋅ B
Calculate the forces in members BE and BD of the loaded truss. The forces are positive if in tension, negative if in compression. Assume F = 7.5 kN, a = 2.5m, b = 3 m, c = 2 m, and d = 2 m. A F Answers: BE= BD = a i i B b E a b O KN KN
A simple pin-connected truss is loaded and supported as shown. The truss is constructed from three aluminum members, each having a cross-sectional area of A = 1160 mm2. Assume a = 2.3 m, b = 6.8 m, and c = 2.8 m. If P = 50 kN and Q = 75 kN, determine the normal stress in each member. L. Answers: JAB OBC i i JAC= i P b MPa (C) MPa (T) MPa (T)
Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider the given structure with P= 952 lb. Во 12 ft The force in member AB is The force in mémber BC is P Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension (7) or compression (C). The force in member AC is 3.75 ft 9 ft lb (Click to select) ✓ lb (Click to select) V lb (Click to select) ✓
Problem 2: Determine the forces in all diagonal and horizontal members of the truss shown below using the method of sections. Determine the force in all vertical members using the method of joints. Hint, the structure is symmetric. The distributed load is transferred to the truss from the roof purlins. State whether the members are tension or compression. Summarize your results on a sketch of the truss. 2.5 k/ft H M K 12 ft A G B C D F 6 @ 12 ft = 72 ft
For the truss shown below, P = 9.1 kips, a = 9 ft, and b = 7 ft. Determine the force in member 1 (tension is positive). Give the answer to one decimal place. Type your answer..

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Exercice 3: Soit une ferme en porte-à-faux à section variable (figure 7.3), Déterminer par la méthode de CREMONA et de RITTER les efforts et les types de sollicitation dans les barres dans les barres. 2 Figure 7.3