Abstract
Size effects have been observed in most engineering materials. In this work we report a systematic study using a nonlocal damage model based on experiments with size-scaled specimens of a German reactor pressure vessel steel. It is shown that reducing the specimen size will increase the specific material strength in small specimens, which cannot be predicted using a conventional damage model. The nonlocal damage model based on a strain gradient-dependent constitutive plasticity theory reproduces the experimental records. Detailed computations predict, furthermore, that the size effect to the local displacement at specimen failure is correlated with the inverse of the square of the specimen size, O( l 2/ D 2).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.