| 1. | Mechanical behavior and energy absorption capacity of aluminum foam under uniaxial compression
泡沫铝的单向压缩行为及其吸能性 |
| 2. | Influence of strain rate on the mechanical properties and energy absorption capacity of aluminum alloy foam
应变速率对闭孔泡沫铝力学性能和能量吸收性能的影响 |
| 3. | Effect of aging treatment on the dynamic compressive property and energy absorption capacity of aluminum alloy foams
时效处理对泡沫铝动态力学性能和能量吸收性能的影响 |
| 4. | Since semi - rigid connections , when subjected to moderate or strong earthquakes , become inelastic more quickly than their fully rigid counterparts , consideration of their energy absorption capacity is important
当受到中震或强震时，半刚性连接比完全刚性连接更快的进入非弹性，因此考虑它的耗能能力十分重要。 |
| 5. | In order to study the seismic behavior of this structure system , three frames are designed and they are subjected under cyclic reversed lateral load . we mainly study the strength , stiffness , ductility , energy absorption capacity and failure causation in the test
为了探讨该新型结构的抗震性能，本文设计并制作了三榀框架，进行了水平低周反复荷载试验，重点研究了方钢管砼框架以及方钢管砼支撑框架的强度、刚度、延性、耗能能力及破坏机制。 |
| 6. | In recent years , quite a lot of earthquakes in the world indicate that steel frames with welding joint easily occur brittle collapse because of having a low ductility at joints . then , a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads
多次地震表明，采用完全焊接刚性节点的钢框架因节点延性差、残余应力大，容易发生脆性破坏，而半刚接钢框架因节点具有较强的变形能力和耗能能力可以抵抗一定的地震荷载。 |
| 7. | Steel frame with welding joint easily occur brittle collapse because of having a low ductility at joints then ， a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads and the using steel qualities of bracing system and joints are small so adopting a semi - rigid jointed steel frame is economical and stable but for semi - rigid connections are complex and variable ， in conventional analysis and design of steel structures ， it is usually assumed that the connections between columns and beams are either rigid or pinned the analysis of steel frames adopting the assumption can simplify the procedure of analysis and design ， but cannot precisely reflect structural practical circumstance and the errors of calculating results are large ， even ， get incorrect conclusions semi - rigid connection was referred to in chinese code for design of steel structures ( 2001 ， 10 ) ， however ， it isn ’ t specified how to apply semi - rigid joints in design in fact it cannot be carry out the purpose of the paper give a calculating method that accords practical engineering and easily put into effect worthwhile it is going to promote the development of semi - rigid jointed steel frame in design and heighten structural stability in the paper ， at first some commonly employed methods for the modeling of connection behavior are introduced richard abbott function modeling of connection is adopted for extended end plate bolted connection by the 34 test data comparing to regression analysis indicate richard - abbott function modeling of connection represents an excellent fit to test data then after a semi - rigid joint behavior can be modeled as a finite stiffness rotation spring ， base on rotation and displacement equation derive the element stiffness matrixes with semi - rigid connections where the effects ofj ointed flexibility geometric non - linearity and shear forces in the connection deformations have been considered in and fixed - end forces are modified finally , a program for calculating semi - rigid with incremental - iterative method has been
本文的目的就是为半刚性连接钢框架的设计提供一种既符合工程实际又简便易行的计算方法，供规范使用过程的补充、延伸或参考；同时，也将促进半刚性连接钢框架设计技术的发展，为提高结构安全性能、节省工程成本发挥应有的作用。本文首先介绍了常见的几种应用较为广泛的梁柱连接弯矩转角关系模型，在分析比较的基础上，选用richard ? abbott函数模型作为外伸端板连接弯矩转角关系模型，通过对34个外伸端板连接的实验数据与回归分析得到的参数比较可知，经回归分析得到的此模型参数与实验数据符合较好。然后用弹簧表征连接点的转动刚度，根据梁的转角位移方程推导出半刚性连接的刚度矩阵，在单元刚度矩阵中考虑了节点柔性、几何非线性和剪切变形的影响，并对固端力进行了修正，最后用增量迭代法编制有限元程序进行计算和分析。 |
| 8. | As one of new composite structures in the field of civil engineering , concrete - filled rectangular steel tubular ( cfrt ) structure has high capacity , large energy absorption capacity , and high ductility , also it has regular shape which is easy to connect between columns and beams , convenient fire - control measure , and short construction time
方钢管混凝土结构作为一种新型组合结构，具有承载力高、耗能能力强、延性好等特点，且外形规则便于梁柱连接，防火措施简单，施工周期短，因此，在中高层住宅建筑中有较广泛的应用前景。 |
| 9. | Steel frame with welding joint easily occur brittle collapse because of having a low ductility at joints . then , a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads and the using steel qualities of bracing system and joints are small . so adopting a semi - rigid jointed steel frame is economical and stable
采用焊接刚性节点的钢框架因节点延性较差容易发生脆性破坏，而半刚接钢框架因节点具有较强的耗能能力可以抵抗一定的地震荷载，同时还可以减少斜撑的数量及节点用钢量，这使得半刚接钢框架成为一种经济、可靠的选择。 |
