| 1. | Nonlinear stress analysis on blade of tunnel fan
隧道通风机叶片非线性应力场分析 |
| 2. | Nonlinear stress strain relation
非线性应力应变关系 |
| 3. | Nonlinear analysis method on the mechanical behavior of preflex composite beams was established with the nonlinear stress - strain curves of materials
摘要采用材料非线性本构关系研究预弯组合梁的受力行为，建立预弯组合梁从预弯钢梁加荷到结构破坏的非线性全过程分析方法。 |
| 4. | Based on the principle of structure - soil interaction , the coupling model was used to simulate the layer structure , nonlinear stress - strain property and status of slipping , tension cracking between soil and reinforced concrete wall
摘要在考虑了土与结构的相互作用的基础上，采用耦合模型来模拟土体的分层性、非线性以及土体和钢筋混凝土之间的滑移、拉裂、嵌入以及土体的半无限边界条件。 |
| 5. | Supposing the concrete structure is loaded at two times , the theory of rc can be used to deduce the formula of bending terminal bearing capacity of cfrp reinforced concrete structure , and the nonlinear stress - strain relationship of concrete is taken into account rightly
摘要在考虑二次受力的基础上，充分考虑了受压区混凝土的非线性应力应变关系，利用钢筋混凝土的相关原理对cfrp加固结构的受弯极限承载力公式进行了相关推导。 |
| 6. | So this model can simulate all kinds of properties of concrete after loading , such as nonlinear stress - strain relationship for concrete , stiffness phenomenon under cycle load , phenomenon compression and expansion for concre te with shearing , strain soften phenomenon while
可以模拟混凝土受力后的各种特性，如混凝土的非线性应力一应变关系，循环荷载作用下的刚度退化现象，剪力引起的混凝土的压缩和膨胀现象和超过强度极限的应变软化现象等，且这种模型的最大优点是表达形式简单，模型参数比较容易确定，便于应用。 |
| 7. | In the paper , static and dynamic triaxial tests were conducted on fiy ash at shanmenxia longgou ash dam , and the static and dynamic parameters of fly ash were obtained . thirdly the 2 dimensions static analysis of the ash dam was conducted based on biot ' s consolidation theory and duncan ' s nonlinear stress - strain model . finally the plane dynamic behaviors of the ash dam during earthquake of intensity 7 were analyzed based on the exponent function model of excess pore water pressure aroused by earthquake , which is put forward in the paper , and equivalent visco - elastic dynamic fem model and principle of effective stress
本文结合实际工程，对三门峡火电厂龙沟灰坝的筑坝粉煤灰进行了静、动三轴试验，确定了该坝粉煤灰的静动力学指标；然后根据比奥( biot )固结有效应力原理，采用邓肯( duncan )非线性应力应变模型，对该灰坝的二维静力应力和变形状态进行了分析；最后利用本文提出的地震超静孔压指数函数模型，采用等价粘弹性动力有限元方法，对该灰坝在地震作用下的动力稳定性进行了分析评述。 |
