| 1. | Identification of nonlinear dynamic systems : time frequency filtering and skeleton curves
时频滤波与骨架曲线 |
| 2. | The analysis of the force - displacement hysteretic loops and skeleton curve of the structure were also processed
分析了结构的滞回曲线、骨架曲线等问题。 |
| 3. | ( 4 ) moment - curvature hysteretic curves , load - displacement hysteretic curves and their skeleton curves were calculated by fiber element method
( 4 )利用纤维模型法,对压弯构件的m -和p -滞回关系曲线及其骨架线进行了分析。 |
| 4. | ( 2 ) based on the tests and theoretic derivation , skeleton curve of restoring force model of frame column with high axial compression ratio is got
( 2 )在试验研究和理论推导的基础上，给出了高轴压比下框架柱恢复力模型的骨架曲线，与试验骨架曲线吻合较好。 |
| 5. | From the restoring force model curves some parameters may be obtained , such as skeleton curves , which are similar to the curves under static load , initial rigidities of the joint , and rigidity degradation etc
从恢复力特性曲线得到了和一次加载相接近的骨架曲线，节点的初始刚度和刚度退化等参数。 |
| 6. | Moment - curvature relationship skeleton curves and load - displacement relationship skeleton curves were also calculated by finite element method . the predicted curves are in good agreement with those of tests
利用abaqus建模对构件的荷载-位移骨架曲线进行了计算,两种计算方法都得到了试验结果的验证。 |
| 7. | With the modeling method in this paper , it is showed that numerical load - displacement curves agree well with the experimental skeleton curves , and that the errors of crack load are bigger , but the cra
分析表明：采用本文的建模方法，计算所得的荷载?位移曲线与试验所得的骨架曲线符合较好；开裂荷载有的误差较大，但开裂部位及过程与低周反复荷试验中某一方向加载所得的结果较为符合。 |
| 8. | The characteristic and applicability of the models are studied by computer simulation . the influence of the skeleton curves and the hysteretic curves of the models to the simulate curves are analyzed . and the stress - strain relations of the models are compared
最后采用模拟效果较好的三个模型（ mander模型、 park模型及sheikh模型）对八度区框架结构进行了中震及大震下动力反应分析。 |
| 9. | Based on the experiments under low reversed cyclic loading , failure pattern , hysteresis curves , skeleton curves , restoring force model , displacement restoring capacity , ductility and rigidity degeneration of prestressed concrete beams with high ppr are studied systematically
摘要基于低周反复荷载试验，对高预应力度混凝土梁的受力过程、破坏形态、滞回曲线、骨架曲线、恢复力模型、变形恢复能力、延性、刚度退化等抗震性能进行了较深入的研究分析。 |
