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- Homogenization-Based Method for Predicting Effective Elastic Properties of Three-Dimensional Braided Composites 基于均匀化方法的三维编织复合材料等效弹性性能预测
- Keywords three dimensional braiding;composites;FEM;effective elastic properties;stress field; 三维编织;复合材料;有限元;等效弹性性能;应力场;
- Effective elastic properties 等效弹性模量
- Based on self-consistent model, the average elastic properties of effective medium are calculated by the fi nite element iteration procedure. 它以自洽模型为基础,利用有限元迭代法计算有效介质的平均弹性性能。
- The effect of cross-section size of braiding preform on the elastic properties of braided composites is larger only if the cross-section size is smaller. 编织预制件的截面尺寸只在较小的情况下才对编织复合材料的弹性常数影响较大。
- Watstein, D., “Effect of Straining Rate on the Compressive Strength and Elastic Properties of Concrete,” Journal of the American Concrete Institute, Vol. 24, pp. 729-744, 1953. 董毓利，谢和平，赵鹏，“不同应变率下混凝土受压全过程的实验研究及其本构模型”，水利学报，第七期，第72-77页，北京，1997。
- Any of various polymers having the elastic properties of natural rubber. 弹性体具有天然橡胶的弹性性质的多种聚合物中的一种
- The experiment has proved that the research of elastic properties of vibration isolation system of the crystal oscillator and measures taken to prevent the vibration are very effective. 试验证明，对某机载雷达频综器中晶体振荡器的隔振系统的弹性特性研究和对其采取的隔振措施是行之有效的。
- The alteration of the in-plane elastic properties in laminates caused by stitching was modeled and the in-plane effective tensile strength of the stitched composite laminates was predicted. 旨在研究由缝纫引起的材料弹性性质的变化并对缝纫复合材料层合板面内拉伸强度进行理论预测。
- The elastic property of the gelmay changes with its age. 胶体的弹性性质可能随着它的寿命而变化的。
- A definition of composite effective elastic moduli is presented based on the energy equivalence principle and its basis and premise are pointed out. 基于能量等效原理提出了复合材料有效弹性模量的定义,并指出了该定义的基础及前提条件。
- The effective elastic modulus of ceramsite is solved by measuring the dynamic elastic modulus of ceramsite concrete and its mortar matrix. 陶粒有效弹性模量系通过测定陶粒混凝土和砂浆基体相应的动弹性模量,然后建立两者的关系式,再采用图解法求得。
- The elastic properties of silk is better than those of cotton or rayon but are not as good as wool's. 蚕丝的弹性比棉纤维和人造丝要好,但稍逊于羊毛。
- Elastic properties of the foundation rock will cause some yiel**, which redistributes stresses in the structure. 基岩的弹性性质会引起一定屈服变形，使结构内的应力重新分布。
- The effective elastic constants of T700/QY8911 single ply plate of stitched lamina are calculated by the proposed model, and the comparison with unstitched model is also analyzed. 在此模型的基础上分析了T700/QY8911缝合单层板的有效弹性常数，并与未缝合模型进行了比较。
- The truss model of unit cell is developed based on non-continuum mechanics,and finite element method is utilized to predict the effective elastic modulus of composites. 基于非连续介质力学方法建立桁架结构单胞模型,采用有限元法预估复合材料的有效弹性模量,以材料质量最轻和刚度要求为目标,选用遗传算法优化细观结构参数。
- In the past few decades the elastic properties of ocean bottom were usually ignored to simplify problems by assuming a fluid seabed. 过去为了简化问题，常将底床的弹性特质忽略而视同流体，因此并未将剪力波的效应考虑在内；
- A theoretical and experimental investigation into the anisotropic elastic properties of open cells foams with Kelvin cells was conducted. 采用理想排列的十四面体结构模型,从理论上和试验上对开孔泡沫铝的弹性常数随偏转角的变化过程进行了探讨。
- Since the isotropy of such laminates holds only for the elastic properties, but not for the strength behavior, their strength largely depends on the stacking structure. 在板内发生损伤之后，其各向同性性质不再保留，最终强度将依赖于加载方向以及叠层顺序。
- The effective elastic moduli, Eed and Eem, of dry and moist gouge and the initial elastic modulus, Eom, of moist gouge increase with increasing confining pressure, and the initial elastic modulus, E0d, of dry gouge is nearly constant. 干、湿断层泥有效弹性模量E_(ed)和E_(em)以及(潮)湿断层泥的初始模量E_(om)均随围压增加而增加;但干断层泥初始弹性模量E_(od)近似保持常数。 同时;E_(od)
