K 0.2 kNm 300 mm 115' M 0 300cos25 mm 850 mm 300 mm 400 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Consider the rigid L-frame KDQC shown, supported by axial members CM and QT and pin support D
as shown. Bars CM and QT are made out of steel with a young's modulus of 200 GPa and a coefficient
of thermal expansion of 12.4x10-6/C. Furthermore, both bars have a cross-sectional area of
1200 mm2. If the assembly is loaded by a 0.2 kNm concentrated moment as shown and the entire system is cooled by 20C, determine the following:
- Internal Force in QT (Tensile of Compressive)
- Internal Force in CM (Tensile of Compressive)
- Displacements in K, Q, and C (determine if leftwards or rightwards)
Transcribed Image Text:K
0.2 kNm
300 mm
115'
M
0
300cos25 mm
850 mm
300 mm
400 mm
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