Search

Your search keyword '"Jia, Haiyou"' showing total 2 results
Start Over Author "Jia, Haiyou" Topic indentation
2 results on '"Jia, Haiyou"'

1. Effect of Deformation Induced Microstructure Faults on the Elastic Mechanical Parameters of Micro-Scale Copper

Author

Wenzhu Liu, Jia Haiyou, Jiasheng Dong, Wang Sufang, Y.H. Feng, H.C. Wang, Yong Huan, and Chen Bo

Subjects
Materials science, Scale (ratio), Mechanical Engineering, 020208 electrical & electronic engineering, Modulus, chemistry.chemical_element, Young's modulus, 02 engineering and technology, Microstructure, 01 natural sciences, Copper, Computer Science::Other, 010309 optics, Condensed Matter::Materials Science, symbols.namesake, chemistry, Mechanics of Materials, Indentation, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, symbols, Composite material, Deformation (engineering), Elastic modulus
Abstract

The elastic mechanical parameters of initial and pre-twisted copper wires were investigated with the aid of a self-developed micro-torsion tester. It was found that the apparent elastic shear modulus and the apparent Young tensile modulus of the copper wires decrease by 13.3 and 8.4% after pre-twist deformation, respectively. In addition, the indentation modulus also decreases as the deformation is increased. When the deformation is more than 30%, the indentation modulus of pre-twisted copper wires is smaller than that of initial copper wires. Microstructural analyses show that the elastic modulus decreases with the proportion of faults.

Published
2018

2. The elastoplastic numerical model and verification by macroindentation experiment of femoral head.

Author

Wang, Jun, Yi, Chen, Wang, Sufang, Wang, Ling, Jia, Haiyou, Chen, Bo, and Huan, Yong

Subjects
FEMUR head, HIP fractures, CANCELLOUS bone, FINITE element method, HEAD, CURVES
Abstract

For internal fixation of proximal femoral fractures, a screw is commonly placed into the femoral head; therefore, mechanical matching of the femoral head and screw is important. This article proposes an elastoplastic numerical model of the femoral head that takes nonlinear deformation and cancellous bone heterogeneity into account. Force–depth curves from finite element analysis based on the model were compared with those from macroindentation experiments. The maximum difference between the indentation depth shown by the finite element model and that found with macroindentation testing was 5.9%, which demonstrates that the model is valid. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results