Journal
MATERIALS
Volume 12, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/ma12030456
Keywords
functionally graded materials; elastoplastic analysis; pure bending; residual stress; large strain
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Funding
- Russian Foundation for Basic Research [17-58-560005]
- Ministry of Science and Technology, Taiwan [MOST 107-2221-E-006-028]
- Ministry of Education, Taiwan
- Aim for the Top University Project to the National Cheng Kung University (NCKU)
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An efficient analytical/numerical method has been developed and programmed to predict the distribution of residual stresses and springback in plane strain pure bending of functionally graded sheets at large strain, followed by unloading. The solution is facilitated by using a Lagrangian coordinate system. The study is concentrated on a power law through thickness distribution of material properties. However, the general method can be used in conjunction with any other through thickness distributions assuming that plastic yielding initiates at one of the surfaces of the sheet. Effects of material properties on the distribution of residual stresses are investigated.
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