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Differences in the mechanical behavior of cortical bone between compression and tension when subjected to progressive loading
Nyman, Jeffry S.3,4; Leng, Huijie2; Dong, X. Neil1; Wang, Xiaodu1
刊名JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
2009-12-01
DOI10.1016/j.jmbbm.2008.11.008
2期:6页:613-619
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Engineering, Biomedical ; Materials Science, Biomaterials
研究领域[WOS]Engineering ; Materials Science
关键词[WOS]AGE-RELATED-CHANGES ; ENERGY-DISSIPATION ; COMPACT-BONE ; STRAIN-RATE ; FATIGUE ; DAMAGE ; COLLAGEN ; TOUGHNESS ; TESTS ; ORIENTATION
英文摘要

The hierarchical arrangement of Collagen and mineral into bone tissue presumably maximizes fracture resistance with respect to the predominant strain mode in bone. Thus, the ability of cortical bone to dissipate energy may differ between compression and tension for the same anatomical site. To test this notion, we subjected bone specimens from the anterior quadrant of human cadaveric tibiae to a progressive loading scheme in either uniaxial tension or uniaxial compression. One tension (dog-bone shape) and one compression specimen (cylindrical shape) were collected each from tibiae of nine middle aged male donors. At each cycle of loading-dwell-unloading-dwell-reloading, we calculated maximum stress, permanent strain, modulus, stress relaxation, time constant, and three pathways of energy dissipation for both loading modes. In doing so, we found that bone dissipated greater energy through the mechanisms of permanent and viscoelastic deformation in compression than in tension. On the other hand, however, bone dissipated greater energy through the release of surface energy in tension than in compression. Moreover, differences in the plastic and viscoelastic properties after yielding were not reflected in the evolution of modulus loss (an indicator of damage accumulation), which was similar for both loading modes. A possible explanation is that differences in damage morphology between the two loading modes may favor the plastic and viscoelastic energy dissipation in compression, but facilitate the surface energy release in tension. Such detailed information about failure mechanisms of bone at the tissue-level would help explain the underlying causes of bone fractures. (C) 2008 Elsevier Ltd. All rights reserved.

语种英语
WOS记录号WOS:000270317200007
引用统计
被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/57527
专题北京大学第三临床医学院_骨科
作者单位1.Univ Texas San Antonio, Dept Mech Engn, San Antonio, TX 78249 USA
2.Peking Univ, Hosp 3, Dept Orthopaed, Beijing 100191, Peoples R China
3.Vanderbilt Univ, Med Ctr, Dept Orthopaed & Rehabil, Nashville, TN 37215 USA
4.Vanderbilt Univ, Med Ctr, Vanderbilt Ctr Bone Biol, Nashville, TN 37215 USA
推荐引用方式
GB/T 7714
Nyman, Jeffry S.,Leng, Huijie,Dong, X. Neil,et al. Differences in the mechanical behavior of cortical bone between compression and tension when subjected to progressive loading[J]. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2009,2(6):613-619.
APA Nyman, Jeffry S.,Leng, Huijie,Dong, X. Neil,&Wang, Xiaodu.(2009).Differences in the mechanical behavior of cortical bone between compression and tension when subjected to progressive loading.JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2(6),613-619.
MLA Nyman, Jeffry S.,et al."Differences in the mechanical behavior of cortical bone between compression and tension when subjected to progressive loading".JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 2.6(2009):613-619.
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