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A steel bolt is subjected to an axial load between two rigid plates so the length of the bolt remains constant. The bolt is subjected to an elevated temperature so that creep is produced. What must be the initial stress so that 70% of the stress is retained after ten years, creep constant is 6.0. Reference stress is 7 MPa and steady state creep strain is 4.2 x 10-8mm/mm per day and elastic modulus is 210 GPa. Refer to Appendix 2 to develop your answer.

A steel bolt is subjected to an axial load between two rigid plates so the length of the bolt remains constant. The bolt is subjected to an elevated temperature so that creep is produced. What must be the initial stress so that 70% of the stress is retained after ten years, creep constant is 6.0. Reference stress is 7 MPa and steady state creep strain is 4.2 x 10-8mm/mm per day and elastic modulus is 210 GPa. Refer to Appendix 2 to develop your answer.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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(b) A steel bolt is subjected to an axial load between two rigid plates so the length of the bolt remains constant. The bolt is subjected to an elevated temperature so that creep is produced. What must be the initial stress so that 70% of the stress is retained after ten years, creep constant is 6.0. Reference stress is 7 MPa and steady state creep strain is 4.2 x 10-8mm/mm per day and elastic modulus is 210 GPa. Refer to Appendix 2 to develop your answer.
Transcribed Image Text:(b) A steel bolt is subjected to an axial load between two rigid plates so the length of the bolt remains constant. The bolt is subjected to an elevated temperature so that creep is produced. What must be the initial stress so that 70% of the stress is retained after ten years, creep constant is 6.0. Reference stress is 7 MPa and steady state creep strain is 4.2 x 10-8mm/mm per day and elastic modulus is 210 GPa. Refer to Appendix 2 to develop your answer.
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