The interconnected bars were pulled 15.71 mm from the right end and fixed. Bar 1 has a length of 4 m, a cross-section of 1.6 cm^2 and a yield stress of 215 MPa; Bar 2 has a length of 2.9 m, a cross-sectional area of 1.8 cm^2 and a yield stress of 258 MPa^. Since both materials have a modulus of elasticity of 207 GPa and the materials are elastic/perfect plastic: a) What is the plastic elongation of the rod no. 1, in meters? b) What is the elongation of the rod no. 2, in meters? c) How many MPa is the normal stress at the cross section of bar 2?
The interconnected bars were pulled 15.71 mm from the right end and fixed. Bar 1 has a length of 4 m, a cross-section of 1.6 cm^2 and a yield stress of 215 MPa; Bar 2 has a length of 2.9 m, a cross-sectional area of 1.8 cm^2 and a yield stress of 258 MPa^. Since both materials have a modulus of elasticity of 207 GPa and the materials are elastic/perfect plastic: a) What is the plastic elongation of the rod no. 1, in meters? b) What is the elongation of the rod no. 2, in meters? c) How many MPa is the normal stress at the cross section of bar 2?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
The interconnected bars were pulled 15.71 mm from the right end and fixed. Bar 1 has a length of 4 m, a cross-section of 1.6 cm^2 and a yield stress of 215 MPa; Bar 2 has a length of 2.9 m, a cross-sectional area of 1.8 cm^2 and a yield stress of 258 MPa^. Since both materials have a modulus of elasticity of 207 GPa and the materials are elastic/perfect plastic:
a) What is the plastic elongation of the rod no. 1, in meters?
b) What is the elongation of the rod no. 2, in meters?
c) How many MPa is the normal stress at the cross section of bar 2?
Transcribed Image Text:4 m
2.9 m
Ax = 15.71 mm
Birbirine bağlı çubuklar sağ uçtan 15.71 mm kadar çekilip sabitlenmiştir. 1 no'lu çubuğun boyu 4 m, kesit alanı 1.6 cm? ve
akma gerilmesi 215 MPa; 2 no'lu çubuğun boyu 2.9 m, kesit alanı 1.8 cm² ve akma gerilmesi 258 MPa'dır. İki malzemenin
de elastisite modülü 207 GPa ve malzemeler elastik/mükemmel plastik olduğuna göre:
1 no'lu çubuğun plastik uzama miktarı kaç metredir?
2 no'lu çubuğun uzama miktarı kaç metredir?
2 no'lu çubuk kesidindeki normal gerilme kaç MPa'dır?
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