Strengthening of gold via alloying elements 的强化效应与应用
On three interest reinforcement effects of family enterprises after listing 论家族企业上市后的三大利益强化效应
Analysis of strengthening effect of lateral friction about deep jetting mixing pile by finite element method 粉喷桩桩侧摩阻力强化效应作用机理有限元分析
The dynamic plastic response for a pinned rigid plastic beam subjected to an arbitrary impulsive distributed load was investigated . the effect of strain hardening and strain rate sensitivity was ignored . the yielding curve was assumed to be rectangular 采用刚塑性假定,忽略应变强化效应和应变率的效应并考虑由于有限变形而导致的轴力的影响,研究任意时间历程冲击载荷作用下简支梁的塑性动力响应问题。
None but is the test spectrum abundant and controllable , it is possible to simulate the stresses environment needed for exposing weakness of the product . based on summarizing the present status of the vibration test and vibration environment simulation technology in the world , the topic of simulation of super - gaussian random vibration environment with controllable frequency spectrum and its applications in reliability enhancement testing is put forward . the main content and conclusions of the dissertation are as following : 1 本文在综述国内外振动试验技术和振动环境模拟技术的基础上,引出“频谱可控的超高斯随机振动环境模拟技术及其在可靠性强化试验中的应用”这一主题,并紧紧围绕该主题开展了如下研究工作: 1 .全面分析了振动激励的功率谱密度量级、幅值分布、带宽以及试件结构的固有频率、阻尼比等因素对疲劳损伤累积的强化效应,提出振动强化试验激励信号应具备的重要特性:频谱可控和超高斯,确立了本文的研究主题和方向。