在循环反复荷载作用下，当保持相同的峰值荷载时，峰值点位移随循环次数的增加而增大，这种现象称为刚度退化。 刚度退化是墙体裂缝的出现与开展以及材料塑性变形发展的充分体现。在能用肉眼看见裂缝之前，其实墙体内部已经出现了裂缝，刚度已有所退化。
中国土木工程学报 关键词： 悬索桥； 刚度退化； 静风； 扭转发散； 紊流 [gap=1793]Keywords: suspension bridge; stiffness degeneration; aerostatic; torsional divergence; turbulence
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The seismic performance,including failure feature,dissipation capacity,deformation capacity and stiffness degradation,were investigated and distinguished.
对比分析了两种预制式构造柱与现浇构造柱在改善墙体破坏特征、滞回耗能特性、变形能力及刚度退化特征等方面的作用。
参考来源 - 预制式构造柱约束墙体抗震性能试验研究Third, in elastic-plastic phase, taken into account R. C. hollow shear walls' stiffness degeneration, seismic action of frame-shear wall is made certain.
考虑钢筋混凝土空心剪力墙刚度退化，即进入弹塑性阶段后，框-剪结构地震作用的确定。
参考来源 - 钢筋混凝土空心剪力墙刚度退化试验研究及框—剪结构中应用方法分析The results indicate the KBSF has excellent aseismic performances such as great elastic stiffness, satiable hysteretic loop, slowly stiffness deterioration, and yielding localized in knee.
结果表明KBSF具有弹性刚度大、滞回环饱满、刚度退化慢,屈服局限于隅撑部位等优越的抗震性能。
参考来源 - 隅撑支撑钢框架抗震性能研究Single layer failure criterion and delamination criterion are introduced when the user subroutine is developed. The progressive damage analysis of laminates is carried out by using stiffness degradation technique.
开发时引入了单层和分层失效准则,利用刚度退化的方法对层压板模型进行渐进损伤分析。
参考来源 - 准静态压痕力作用下复合材料层压板的损伤阻抗分析·2,447,543篇论文数据，部分数据来源于NoteExpress
研究扁梁框架节点的抗剪承载力、变形、耗能、延性和刚度退化等抗震性能。
And the aseismatic capacity of shear resistant strength, deform, energy dissipation, ductility and rigidity degeneration is also researched.
对于框架—剪力墙结构体系而言，随着剪力墙的刚度退化，框架的地震层剪力会不断变化。
For the frame-wall structure system, the seismic story shear of frame will change along with stiff degenerating of wall.
在整个加载过程中，渡槽试件的刚度退化明显，刚度退化主要集中在开裂后至屈服这一阶段。
In all loading process, the rigidity degeneration is obvious and it is mainly in between crack and yield.
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