动力系统非连续单一叠加结构界面变形与能量损耗特性  

Deformation and energy loss of single layered and discontinuous structural interface of a power system

作　　者：邵毅敏[1,2] 肖会芳[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]长沙理工大学汽车与机械工程学院,长沙410004

出　　处：《振动与冲击》2011年第4期217-222,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(50675232)

摘　　要：振动与其能量通过多层叠加结构的非连续界面的传递机理和损耗特性是一项研究较少的难题,考虑其结构界面粗糙度影响的更少。通过建立"单层绝对光滑金属板-刚性平面"和"单层粗糙金属板-刚性平面"的单界面模型,采用有限元方法,对加载与卸载过程中,具有不同界面形态、不同塑性材料特性和界面摩擦的单层模型界面的接触力和变形进行计算,研究了单一界面上的接触力-变形关系,以及由塑性变形与界面摩擦引起的能量损耗特性,获得描述单一界面能量损耗与接触变形的关系表达式。为研究振动和能量在多层叠加结构的非连续粗糙多界面上的传递机理和损耗特性提供了基础。Studying on transmission mechanism and dissipation feature of vibration and energy with multi-layered and discontinuous structural interfaces was less,especially,considering the effect of interface roughness.The ＂single layered absolute smooth metal panel—rigid plane＂ and ＂single layered rough surface metal panel—rigid plane＂ models were established here to investigate the force-deformation relation and the energy loss characteristics of the interface due to plasticity and interface friction during loading and unloading processes.Results for interfaces of different plastic material models,frictionless and friction were presented and comparisons were made.The energy loss coefficient was defined and the expression relating energy loss and interface prosperities was established.

关 键 词：非连续 粗糙界面 塑性应变 能量损耗 

分 类 号：TB532[理学—物理]