Experimental study of ductile fracture of tubes under combined tension/torsion
Name
191730655-MIT.pdf
Description
Full printable version
Size
1.39 MB
Format
Adobe PDF
Checksum (MD5)
92cb6953b679c413d481dce46adb448d
Author(s)
Johnson, Joseph M. (Joseph Michael)
Advisor(s)
Tomasz Wierzbicki.
Date Issued
2007
Publisher
Massachusetts Institute of Technology
Abstract
This experiment sought to compare the results of an experimental torsion test on a specimen of 1045 steel with a torsion simulation in the ABAQUS FEA software program. A simulation of a tension test on a round bar of 1045 steel was first executed to determine the correct stress-strain curve for 1045 steel. A torsion specimen was designed based on the constraints of the testing machine, and the torsion test was carried out. A model of the specimen was constructed in ABAQUS using the results of the tension simulation, and a torsion test was simulated. The simulation accurately predicted the shape of the experimental torque vs. twist curve, but the simulated values were 7% higher than the experimental values in the plastic region. The specimen fractured at a rotation of 430 with a plastic strain of 1.013. This was 2.4 times higher than in the tension simulation, where the specimen failed at a strain of 0.427.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.
Includes bibliographical references (leaf 22).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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