类骨纳米结构生物材料的细观力学分析
Micromechanical analysis for bone-like nanostructural biomaterials
查看参考文献10篇
|
文摘
|
根据贝壳、骨骼等生物材料在纳米尺度的微结构特征,采用剪滞模型,分别推导了蛋白质材料为线弹性和弹塑性时类骨材料的等效模量和总体应力应变曲线.通过与有限元以及Gao等人的拉剪链模型结果的比较,分析了线性剪滞模型和拉剪链模型在研究类骨材料等效模量时的有效性.结果显示,剪滞模型与二维有限元结果符合较好,拉剪链模型在长细比较大时与有限元结果偏离较大.进一步将弹塑性剪滞模型预测的应力-应变曲线与实验测量结果进行了比较,两者符合较好.从模拟结果中可以看出,在刚度发生明显降低之前,已经有部分蛋白质进入塑性变形,从而反映了生物材料的能耗与增韧特征. |
|
其他语种文摘
|
Shear lag analysis was applied to bone-like nanostructural biomaterials such as nacre and bone with unique structure in nano scale.The models for protein with both linear and elastic-plastic deformations were developed.Compared with the results of finite element method(FEM) and the tension shear chain model of Gao,the linear shear lag model fits better with FEM while the tension shear chain model predicts a larger effective modulus when the aspect ratio is large.The elastic-plastic shear lag model fits well with the experimental results,and the plastic deformation takes place before the modulus of the materials decreases obviously,which provides those materials the ability to dissipate energy and enhance the toughness. |
|
来源
|
复合材料学报
,2007,24(6):95-99 【核心库】
|
|
关键词
|
细观力学模型
;
贝壳
;
骨骼
;
剪滞分析
|
|
地址
|
中国科学院,力学研究所, 非线性力学国家重点实验室, 北京, 100080
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-3851 |
|
学科
|
一般工业技术 |
|
基金
|
国家自然科学基金
|
|
文献收藏号
|
CSCD:3055689
|
参考文献 共
10
共1页
|
|
1.
Curry J D. Mechanical properties of mother of pearl in tension.
Proc R Soc London B,1977,196:443-463
|
CSCD被引
36
次
|
|
|
|
|
2.
Jackson A P. The mechanical design of nacre.
Proc R Soc Lond B,1988,234:415-440
|
CSCD被引
45
次
|
|
|
|
|
3.
Ji Baohua. Mechanical properties of nanostructure of biological materials.
J Mech Phys Solids,2004,52(9):1963-1990
|
CSCD被引
22
次
|
|
|
|
|
4.
Almqvist N. Methods for fabricating and characterizing a new generation of biomimetic materials.
Mater Sci Eng C,1999,7(1):37-43
|
CSCD被引
10
次
|
|
|
|
|
5.
Gao Huajian. Modeling fracture in nanomaterials via a virtual internal bond method.
Eng Fract Mech,2003,70(14):1777-1791
|
CSCD被引
3
次
|
|
|
|
|
6.
Wang R Z. Deformation mechanisms in nacre.
Journal of Materials Research,2001,16(9):2485-2493
|
CSCD被引
38
次
|
|
|
|
|
7.
Menig R. Quasistatic and dynamic mechanical response of Strombus gigas(conch)shells.
Materials Science and Engineering,2001,297(2):203-211
|
CSCD被引
1
次
|
|
|
|
|
8.
Kotha S P. Micromechanical model of nacre tested in tension.
Journal of Materials Science,2001,36(8):2001-2007
|
CSCD被引
7
次
|
|
|
|
|
9.
Song F. Structural and mechanical properties of the organic matrix layers of nacre.
Biomaterials,2003,24(20):3623-3631
|
CSCD被引
36
次
|
|
|
|
|
10.
Song F. Effects of nanostructures on the fracture strength of the interfaces in nacre.
Journal of Materials Research,2003,18(8):1741-1744
|
CSCD被引
15
次
|
|
|
|
|
了解气象卫星更多信息，请访问