【Key words】 Bone Mineral Density； Compression Intensity； Compression Stiffness； Kyphoplasty； Domestic Polymethylmetharylate； Injectable Calcium Phosphate Cement；
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Under the same loading condition as short segment posterior fixation devices encountering in fatigue test, this model was stricted and loaded. Through structure analysis, the strain/stress distributions in it and compression stiffness were processed.
方法:通过有限单元法(FEM)的结构分析功能,建立新型脊柱外固定器的计算机模型,并根据外固定器固定在椎体上的重力受压情况模拟加载,仿真分析模型各部分的应力、应变值及分布和压缩刚度。
参考来源 - 新型脊柱外固定器的生物力学有限元分析·2,447,543篇论文数据，部分数据来源于NoteExpress
Under different compression stiffness of rubber pads used in rotary bearing, uniformity of forces applied on wheels is studied.
研究了回转支承橡胶垫刚度对滚轮受力均匀性的影响；
The elastic constitutive equations, the composite elastic modulus and the composite axial compression stiffness of CFST are derived.
导出了钢管混凝土柱弹性本构方程、组合轴压弹性模量和组合轴压刚度的理论计算公式。
The relation between AE characteristics during rock failure and machine stiffness is analysed under uniaxial compression with the above model.
依据这一模型，分析了单轴压缩时岩石破坏阶段声发射特性与压机刚度的关系。
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