双曲型不锈钢管铅阻尼器性能研究

提出一种双曲型不锈钢管铅阻尼器,阐述了其构造与特点。采用ABAQUS有限元分析软件,对双曲型不锈钢管铅阻尼器和普通钢管铅阻尼器及设过渡段(A类构造)、不设过渡段(B类构造)的双曲型不锈钢管铅阻尼器进行对比分析。结果表明:双曲型不锈钢管铅阻尼器滞回曲线对称、饱满,在小位移下即进入屈服耗能,具有优异且稳定的耗能能力;当阻尼器初始屈服承载力相等时,双曲型不锈钢管铅阻尼器在更小的位移下进入较稳定的耗能状态,提供更大的稳定屈服承载力;A、B类构造的双曲型不锈钢管铅阻尼器均具有优异的力学性能,B类构造可降低不锈钢和铅芯的用量,简化加工工艺,提高其经济性。

Research on performance of the hyperbolic type lead-filled stainless steel tube damper

The hyperbolic type lead-filled stainless steel damper(referred to as H-LSSTD)was presented,its structure and characteristics were introduced.Finite element software ABAQUS was used to compare the performance of the hyperbolic type lead-filled tube dampers used stainless steel and ordinary carbon steel(referred to as H-LSTD),and compare the H-LSSTD with transition sectioncan(Class A)and no transition sectioncan(Class B).The results show that the hysteretic curve of the H-LSSTD is symmetric and full,and the damper enters into yield energy dissipation under small displacement,with excellent and stable energy dissipation capacity;When the initial yield capacity of H-LSSTD is equal to that of H-LSTD,the H-LSSTD enters into a more stable energy dissipation state with a smaller displacement,and provides a larger stable yield bearing capacity;Both of class A and B have excellent mechanical properties,class B can reduce the consumption of stainless steel and lead core,simplify the processing technic,and improve the economy.